Project acronym 3DWATERWAVES
Project Mathematical aspects of three-dimensional water waves with vorticity
Researcher (PI) Erik Torsten Wahlén
Host Institution (HI) LUNDS UNIVERSITET
Call Details Starting Grant (StG), PE1, ERC-2015-STG
Summary The goal of this project is to develop a mathematical theory for steady three-dimensional water waves with vorticity. The mathematical model consists of the incompressible Euler equations with a free surface, and vorticity is important for modelling the interaction of surface waves with non-uniform currents. In the two-dimensional case, there has been a lot of progress on water waves with vorticity in the last decade. This progress has mainly been based on the stream function formulation, in which the problem is reformulated as a nonlinear elliptic free boundary problem. An analogue of this formulation is not available in three dimensions, and the theory has therefore so far been restricted to irrotational flow. In this project we seek to go beyond this restriction using two different approaches. In the first approach we will adapt methods which have been used to construct three-dimensional ideal flows with vorticity in domains with a fixed boundary to the free boundary context (for example Beltrami flows). In the second approach we will develop methods which are new even in the case of a fixed boundary, by performing a detailed study of the structure of the equations close to a given shear flow using ideas from infinite-dimensional bifurcation theory. This involves handling infinitely many resonances.
Summary
The goal of this project is to develop a mathematical theory for steady three-dimensional water waves with vorticity. The mathematical model consists of the incompressible Euler equations with a free surface, and vorticity is important for modelling the interaction of surface waves with non-uniform currents. In the two-dimensional case, there has been a lot of progress on water waves with vorticity in the last decade. This progress has mainly been based on the stream function formulation, in which the problem is reformulated as a nonlinear elliptic free boundary problem. An analogue of this formulation is not available in three dimensions, and the theory has therefore so far been restricted to irrotational flow. In this project we seek to go beyond this restriction using two different approaches. In the first approach we will adapt methods which have been used to construct three-dimensional ideal flows with vorticity in domains with a fixed boundary to the free boundary context (for example Beltrami flows). In the second approach we will develop methods which are new even in the case of a fixed boundary, by performing a detailed study of the structure of the equations close to a given shear flow using ideas from infinite-dimensional bifurcation theory. This involves handling infinitely many resonances.
Max ERC Funding
1 203 627 €
Duration
Start date: 2016-03-01, End date: 2021-02-28
Project acronym ACO
Project The Proceedings of the Ecumenical Councils from Oral Utterance to Manuscript Edition as Evidence for Late Antique Persuasion and Self-Representation Techniques
Researcher (PI) Peter Alfred Riedlberger
Host Institution (HI) OTTO-FRIEDRICH-UNIVERSITAET BAMBERG
Call Details Starting Grant (StG), SH5, ERC-2015-STG
Summary The Acts of the Ecumenical Councils of Late Antiquity include (purportedly) verbatim minutes of the proceedings, a formal framework and copies of relevant documents which were either (allegedly) read out during the proceedings or which were later attached to the Acts proper. Despite this unusual wealth of documentary evidence, the daunting nature of the Acts demanding multidisciplinary competency, their complex structure with a matryoshka-like nesting of proceedings from different dates, and the stereotype that their contents bear only on Christological niceties have deterred generations of historians from studying them. Only in recent years have their fortunes begun to improve, but this recent research has not always been based on sound principles: the recorded proceedings of the sessions are still often accepted as verbatim minutes. Yet even a superficial reading quickly reveals widespread editorial interference. We must accept that in many cases the Acts will teach us less about the actual debates than about the editors who shaped their presentation. This does not depreciate the Acts’ evidence: on the contrary, they are first-rate material for the rhetoric of persuasion and self-representation. It is possible, in fact, to take the investigation to a deeper level and examine in what manner the oral proceedings were put into writing: several passages in the Acts comment upon the process of note-taking and the work of the shorthand writers. Thus, the main objective of the proposed research project could be described as an attempt to trace the destinies of the Acts’ texts, from the oral utterance to the manuscript texts we have today. This will include the fullest study on ancient transcript techniques to date; a structural analysis of the Acts’ texts with the aim of highlighting edited passages; and a careful comparison of the various editions of the Acts, which survive in Greek, Latin, Syriac and Coptic, in order to detect traces of editorial interference.
Summary
The Acts of the Ecumenical Councils of Late Antiquity include (purportedly) verbatim minutes of the proceedings, a formal framework and copies of relevant documents which were either (allegedly) read out during the proceedings or which were later attached to the Acts proper. Despite this unusual wealth of documentary evidence, the daunting nature of the Acts demanding multidisciplinary competency, their complex structure with a matryoshka-like nesting of proceedings from different dates, and the stereotype that their contents bear only on Christological niceties have deterred generations of historians from studying them. Only in recent years have their fortunes begun to improve, but this recent research has not always been based on sound principles: the recorded proceedings of the sessions are still often accepted as verbatim minutes. Yet even a superficial reading quickly reveals widespread editorial interference. We must accept that in many cases the Acts will teach us less about the actual debates than about the editors who shaped their presentation. This does not depreciate the Acts’ evidence: on the contrary, they are first-rate material for the rhetoric of persuasion and self-representation. It is possible, in fact, to take the investigation to a deeper level and examine in what manner the oral proceedings were put into writing: several passages in the Acts comment upon the process of note-taking and the work of the shorthand writers. Thus, the main objective of the proposed research project could be described as an attempt to trace the destinies of the Acts’ texts, from the oral utterance to the manuscript texts we have today. This will include the fullest study on ancient transcript techniques to date; a structural analysis of the Acts’ texts with the aim of highlighting edited passages; and a careful comparison of the various editions of the Acts, which survive in Greek, Latin, Syriac and Coptic, in order to detect traces of editorial interference.
Max ERC Funding
1 497 250 €
Duration
Start date: 2016-05-01, End date: 2021-04-30
Project acronym BUMP
Project BETTER UNDERSTANDING the METAPHYSICS of PREGNANCY
Researcher (PI) Elisabeth Marjolijn Kingma
Host Institution (HI) UNIVERSITY OF SOUTHAMPTON
Call Details Starting Grant (StG), SH5, ERC-2015-STG
Summary Every single human is the product of a pregnancy: an approximately nine-month period during which a foetus develops within its mother’s body. Yet pregnancy has not been a traditional focus in philosophy. That is remarkable, for two reasons:
First, because pregnancy presents fascinating philosophical problems: what, during the pregnancy, is the nature of the relationship between the foetus and the maternal organism? What is the relationship between the pregnant organism and the later baby? And when does one person or organism become two?
Second, because so many topics immediately adjacent to or involved in pregnancy have taken centre stage in philosophical enquiry. Examples include questions about personhood, foetuses, personal identity and the self.
This project launches the metaphysics of pregnancy as an important and fundamental area of philosophical research.
The core aims of the project are:
(1) to develop a philosophically sophisticated account of human pregnancy and birth, and the entities involved in this, that is attentive to our best empirical understanding of human reproductive biology;
(2) to articulate the metaphysics of organisms, persons and selves in a way that acknowledges the details of how we come into existence; and
(3) to start the process of rewriting the legal, social and moral language we use to classify ourselves and our actions, so that it is compatible with and can accommodate the nature of pregnancy.
The project will investigate these questions in the context of a range of philosophical sub disciplines, including analytic metaphysics, philosophy of biology and feminist philosophy, and in close dialogue with our best empirical understanding of the life sciences – most notably physiology.
Summary
Every single human is the product of a pregnancy: an approximately nine-month period during which a foetus develops within its mother’s body. Yet pregnancy has not been a traditional focus in philosophy. That is remarkable, for two reasons:
First, because pregnancy presents fascinating philosophical problems: what, during the pregnancy, is the nature of the relationship between the foetus and the maternal organism? What is the relationship between the pregnant organism and the later baby? And when does one person or organism become two?
Second, because so many topics immediately adjacent to or involved in pregnancy have taken centre stage in philosophical enquiry. Examples include questions about personhood, foetuses, personal identity and the self.
This project launches the metaphysics of pregnancy as an important and fundamental area of philosophical research.
The core aims of the project are:
(1) to develop a philosophically sophisticated account of human pregnancy and birth, and the entities involved in this, that is attentive to our best empirical understanding of human reproductive biology;
(2) to articulate the metaphysics of organisms, persons and selves in a way that acknowledges the details of how we come into existence; and
(3) to start the process of rewriting the legal, social and moral language we use to classify ourselves and our actions, so that it is compatible with and can accommodate the nature of pregnancy.
The project will investigate these questions in the context of a range of philosophical sub disciplines, including analytic metaphysics, philosophy of biology and feminist philosophy, and in close dialogue with our best empirical understanding of the life sciences – most notably physiology.
Max ERC Funding
1 273 290 €
Duration
Start date: 2016-04-01, End date: 2021-03-31
Project acronym BUNDLEFORCE
Project Unravelling the Mechanosensitivity of Actin Bundles in Filopodia
Researcher (PI) Antoine Guillaume Jegou
Host Institution (HI) CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
Call Details Starting Grant (StG), LS1, ERC-2015-STG
Summary Eukaryotic cells constantly convert signals between biochemical energy and mechanical work to timely accomplish many key functions such as migration, division or development. Filopodia are essential finger-like structures that emerge at the cell front to orient the cell in response to its chemical and mechanical environment. Yet, the molecular interactions that make the filopodia mechanosensitive are not known. To tackle this challenge we propose unique biophysical in vitro and in vivo experiments of increasing complexity. Here we will focus on how the underlying actin filament bundle regulates filopodium growth and retraction cycles at the micrometer and seconds scales. These parallel actin filaments are mainly elongated at their barbed-end by formins and cross-linked by bundling proteins such as fascins.
We aim to:
1) Elucidate how formin and fascin functions are regulated by mechanics at the single filament level. We will investigate how formin partners and competitors present in filopodia affect formin processivity; how fascin affinity for the side of filaments is modified by filament tension and formin presence at the barbed-end.
2) Reconstitute filopodium-like actin bundles in vitro to understand how actin bundle size and fate are regulated down to the molecular scale. Using a unique experimental setup that combines microfluidics and optical tweezers, we will uncover for the first time actin bundles mechanosensitive capabilities, both in tension and compression.
3) Decipher in vivo the mechanics of actin bundles in filopodia, using fascins and formins with integrated fluorescent tension sensors.
This framework spanning from in vitro single filament to in vivo meso-scale actin networks will bring unprecedented insights into the role of actin bundles in filopodia mechanosensitivity.
Summary
Eukaryotic cells constantly convert signals between biochemical energy and mechanical work to timely accomplish many key functions such as migration, division or development. Filopodia are essential finger-like structures that emerge at the cell front to orient the cell in response to its chemical and mechanical environment. Yet, the molecular interactions that make the filopodia mechanosensitive are not known. To tackle this challenge we propose unique biophysical in vitro and in vivo experiments of increasing complexity. Here we will focus on how the underlying actin filament bundle regulates filopodium growth and retraction cycles at the micrometer and seconds scales. These parallel actin filaments are mainly elongated at their barbed-end by formins and cross-linked by bundling proteins such as fascins.
We aim to:
1) Elucidate how formin and fascin functions are regulated by mechanics at the single filament level. We will investigate how formin partners and competitors present in filopodia affect formin processivity; how fascin affinity for the side of filaments is modified by filament tension and formin presence at the barbed-end.
2) Reconstitute filopodium-like actin bundles in vitro to understand how actin bundle size and fate are regulated down to the molecular scale. Using a unique experimental setup that combines microfluidics and optical tweezers, we will uncover for the first time actin bundles mechanosensitive capabilities, both in tension and compression.
3) Decipher in vivo the mechanics of actin bundles in filopodia, using fascins and formins with integrated fluorescent tension sensors.
This framework spanning from in vitro single filament to in vivo meso-scale actin networks will bring unprecedented insights into the role of actin bundles in filopodia mechanosensitivity.
Max ERC Funding
1 499 190 €
Duration
Start date: 2016-03-01, End date: 2021-02-28
Project acronym ChemBioAP
Project Elucidation of autophagy using novel chemical probes
Researcher (PI) Yaowen Wu
Host Institution (HI) UMEA UNIVERSITET
Call Details Starting Grant (StG), LS1, ERC-2015-STG
Summary The interest on autophagy, an evolutionarily conserved process in eukaryotes, has enormously increased in the last years, since autophagy is involved in many diseases such as cancer and neurodegenerative disorders. Autophagosome formation is the key process in autophagy. Despite extensive work, the model of autophagosome formation is not yet well established. Some important questions on autophagosome biogenesis remain to be elusive, such as where the bona fide marker protein of autophagosome, LC3, is lipidated, how lipidated LC3 functions in autophagosome formation, and how the proteins for LC3 lipidation and delipidation are involved in autophagosome formation. Although genetic approaches have been useful to identify genes involved in autophagy, they are chronic and thereby the dynamics of phenotypic change cannot be followed, making them not suited for study highly dynamic process such as autophagosome formation. Herein, I propose to develop and use novel chemical probes to address these issues. First, I plan to prepare semi-synthetic caged LC3 proteins and apply them to monitor dynamics of autophagosome formation in the cell in order to address those questions on autophagosome formation. The semi-synthetic LC3 proteins are expected to confer a temporal control and to realize manipulation of protein structure, which renders such studies possible. Second, I intend to develop a versatile approach targeting specific endogenous proteins using a reversible chemically induced dimerization (CID) system, termed as “knock on and off” strategy. I plan to use this approach to elucidate the function of two distinct PI3K complexes in autophagosome formation. On one hand, the establishment of novel approaches will open up a new avenue for studying biological processes. On the other hand, the use of the tool will reveal the mechanism of autophagy.
Summary
The interest on autophagy, an evolutionarily conserved process in eukaryotes, has enormously increased in the last years, since autophagy is involved in many diseases such as cancer and neurodegenerative disorders. Autophagosome formation is the key process in autophagy. Despite extensive work, the model of autophagosome formation is not yet well established. Some important questions on autophagosome biogenesis remain to be elusive, such as where the bona fide marker protein of autophagosome, LC3, is lipidated, how lipidated LC3 functions in autophagosome formation, and how the proteins for LC3 lipidation and delipidation are involved in autophagosome formation. Although genetic approaches have been useful to identify genes involved in autophagy, they are chronic and thereby the dynamics of phenotypic change cannot be followed, making them not suited for study highly dynamic process such as autophagosome formation. Herein, I propose to develop and use novel chemical probes to address these issues. First, I plan to prepare semi-synthetic caged LC3 proteins and apply them to monitor dynamics of autophagosome formation in the cell in order to address those questions on autophagosome formation. The semi-synthetic LC3 proteins are expected to confer a temporal control and to realize manipulation of protein structure, which renders such studies possible. Second, I intend to develop a versatile approach targeting specific endogenous proteins using a reversible chemically induced dimerization (CID) system, termed as “knock on and off” strategy. I plan to use this approach to elucidate the function of two distinct PI3K complexes in autophagosome formation. On one hand, the establishment of novel approaches will open up a new avenue for studying biological processes. On the other hand, the use of the tool will reveal the mechanism of autophagy.
Max ERC Funding
1 500 000 €
Duration
Start date: 2016-09-01, End date: 2021-08-31
Project acronym COSMO_SIMS
Project Astrophysics for the Dark Universe: Cosmological simulations in the context of dark matter and dark energy research
Researcher (PI) Oliver Jens Hahn
Host Institution (HI) CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
Call Details Starting Grant (StG), PE9, ERC-2015-STG
Summary The objective of this ambitious research proposal is to push forward the frontier of computational cosmology by significantly improving the precision of numerical models on par with the increasing richness and depth of surveys that aim to shed light on the nature of dark matter and dark energy.
Using new phase-space techniques for the simulation and analysis of dark matter, completely new insights into its dynamics are possible. They allow, for the first time, the accurate simulation of dark matter cosmologies with suppressed small-scale power without artificial fragmentation. Using such techniques, I will establish highly accurate predictions for the properties of dark matter and baryons on small scales and investigate the formation of the first galaxies in non-CDM cosmologies.
Baryonic effects on cosmological observables are a severe limiting factor in interpreting cosmological measurements. I will investigate their impact by identifying the relevant astrophysical processes in relation to the multi-wavelength properties of galaxy clusters and the galaxies they host. This will be enabled by a statistical set of zoom simulations where it is possible to study how these properties correlate with one another, with the assembly history, and how we can derive better models for unresolved baryonic processes in cosmological simulations and thus, ultimately, how we can improve the power of cosmological surveys.
Finally, I will develop a completely unified framework for precision cosmological initial conditions (ICs) that is scalable to both the largest simulations and the highest resolution zoom simulations. Bringing ICs into the ‘cloud’ will enable new statistical studies using zoom simulations and increase the reproducibility of simulations within the community.
My previous work in developing most of the underlying techniques puts me in an excellent position to lead a research group that is able to successfully approach such a wide-ranging and ambitious project.
Summary
The objective of this ambitious research proposal is to push forward the frontier of computational cosmology by significantly improving the precision of numerical models on par with the increasing richness and depth of surveys that aim to shed light on the nature of dark matter and dark energy.
Using new phase-space techniques for the simulation and analysis of dark matter, completely new insights into its dynamics are possible. They allow, for the first time, the accurate simulation of dark matter cosmologies with suppressed small-scale power without artificial fragmentation. Using such techniques, I will establish highly accurate predictions for the properties of dark matter and baryons on small scales and investigate the formation of the first galaxies in non-CDM cosmologies.
Baryonic effects on cosmological observables are a severe limiting factor in interpreting cosmological measurements. I will investigate their impact by identifying the relevant astrophysical processes in relation to the multi-wavelength properties of galaxy clusters and the galaxies they host. This will be enabled by a statistical set of zoom simulations where it is possible to study how these properties correlate with one another, with the assembly history, and how we can derive better models for unresolved baryonic processes in cosmological simulations and thus, ultimately, how we can improve the power of cosmological surveys.
Finally, I will develop a completely unified framework for precision cosmological initial conditions (ICs) that is scalable to both the largest simulations and the highest resolution zoom simulations. Bringing ICs into the ‘cloud’ will enable new statistical studies using zoom simulations and increase the reproducibility of simulations within the community.
My previous work in developing most of the underlying techniques puts me in an excellent position to lead a research group that is able to successfully approach such a wide-ranging and ambitious project.
Max ERC Funding
1 471 382 €
Duration
Start date: 2016-09-01, End date: 2021-08-31
Project acronym CREWS
Project Contexts of and Relations between Early Writing Systems
Researcher (PI) Philippa Mary Steele
Host Institution (HI) THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE
Call Details Starting Grant (StG), SH5, ERC-2015-STG
Summary Contexts of and Relations between Early Writing Systems
This project takes an innovative and interdisciplinary approach to the history of writing, redressing lingering problems that have hampered previous research and developing new methodologies for studying scripts and their social context. The staff on the project will work on specific case studies relating to inscriptions of the ancient Aegean, Eastern Mediterranean and Levant (c.2000-600 BC), developing a new and much deeper understanding of writing, literacy and social and cultural interrelations in the area than has ever been possible via the often out-dated traditional methods usually applied to these data. The focus will be on enriching our understanding of both linguistic and social aspects of the borrowing and propagation of writing. This planned research has the potential to change the way we think about writing systems, their societal context and the ways in which ideas were exchanged in early civilisations. Published and publicised through multiple outputs and media, the results will be of importance not only to the specific chronological period and geographical area under close consideration but also to the diachronic study of relationships between population groups and the significance of such relationships for the wider field of cultural history.
Summary
Contexts of and Relations between Early Writing Systems
This project takes an innovative and interdisciplinary approach to the history of writing, redressing lingering problems that have hampered previous research and developing new methodologies for studying scripts and their social context. The staff on the project will work on specific case studies relating to inscriptions of the ancient Aegean, Eastern Mediterranean and Levant (c.2000-600 BC), developing a new and much deeper understanding of writing, literacy and social and cultural interrelations in the area than has ever been possible via the often out-dated traditional methods usually applied to these data. The focus will be on enriching our understanding of both linguistic and social aspects of the borrowing and propagation of writing. This planned research has the potential to change the way we think about writing systems, their societal context and the ways in which ideas were exchanged in early civilisations. Published and publicised through multiple outputs and media, the results will be of importance not only to the specific chronological period and geographical area under close consideration but also to the diachronic study of relationships between population groups and the significance of such relationships for the wider field of cultural history.
Max ERC Funding
1 472 519 €
Duration
Start date: 2016-04-01, End date: 2021-03-31
Project acronym CRISPAIR
Project Study of the interplay between CRISPR interference and DNA repair pathways towards the development of novel CRISPR tools
Researcher (PI) David Bikard
Host Institution (HI) INSTITUT PASTEUR
Call Details Starting Grant (StG), LS1, ERC-2015-STG
Summary CRISPR-Cas loci are the adaptive immune system of archaea and bacteria. They can capture pieces of invading DNA and use this information to degrade target DNA through the action of RNA-guided nucleases. The consequences of DNA cleavage by Cas nucleases, i.e. how breaks are processed and whether they can be repaired, remains to be investigated. A better understanding of the interplay between DNA repair and CRISPR-Cas is critical both to shed light on the evolution and biology of these fascinating systems and for the development of biotechnological tools based on Cas nucleases. CRISPR systems have indeed become a popular tool to edit Eukaryotic genomes. The strategies employed take advantage of different DNA repair pathways to introduce mutations upon DNA cleavage. In bacteria however, the introduction of breaks by Cas nucleases in the chromosome has been described to kill the cell. Preliminary data indicates that this might not always be the case and that some DNA repair pathways could compete with CRISPR immunity allowing cells to survive. Using a combination of bioinformatics and genetics approaches we will investigate the interplay between CRISPR and DNA repair in bacteria with a particular focus on the widely used CRISPR-Cas9 system. The knowledge gained from this study will then help us develop novel tools for bacterial genome engineering. In particular we will introduce a NHEJ pathway in E.coli making it possible to perform CRISPR knockout screens. Finally using CRISPR libraries and multiplexed targeting, we will generate for the first time all combinations of pair-wise gene knockouts in an organism, a task that for now remains elusive, even for large consortiums and with the use of automation. This will enable to decipher genome-scale genetic interaction networks, an important step for our understanding of bacteria as a system.
Summary
CRISPR-Cas loci are the adaptive immune system of archaea and bacteria. They can capture pieces of invading DNA and use this information to degrade target DNA through the action of RNA-guided nucleases. The consequences of DNA cleavage by Cas nucleases, i.e. how breaks are processed and whether they can be repaired, remains to be investigated. A better understanding of the interplay between DNA repair and CRISPR-Cas is critical both to shed light on the evolution and biology of these fascinating systems and for the development of biotechnological tools based on Cas nucleases. CRISPR systems have indeed become a popular tool to edit Eukaryotic genomes. The strategies employed take advantage of different DNA repair pathways to introduce mutations upon DNA cleavage. In bacteria however, the introduction of breaks by Cas nucleases in the chromosome has been described to kill the cell. Preliminary data indicates that this might not always be the case and that some DNA repair pathways could compete with CRISPR immunity allowing cells to survive. Using a combination of bioinformatics and genetics approaches we will investigate the interplay between CRISPR and DNA repair in bacteria with a particular focus on the widely used CRISPR-Cas9 system. The knowledge gained from this study will then help us develop novel tools for bacterial genome engineering. In particular we will introduce a NHEJ pathway in E.coli making it possible to perform CRISPR knockout screens. Finally using CRISPR libraries and multiplexed targeting, we will generate for the first time all combinations of pair-wise gene knockouts in an organism, a task that for now remains elusive, even for large consortiums and with the use of automation. This will enable to decipher genome-scale genetic interaction networks, an important step for our understanding of bacteria as a system.
Max ERC Funding
1 499 763 €
Duration
Start date: 2016-03-01, End date: 2021-02-28
Project acronym DigitalMemories
Project We are all Ayotzinapa: The role of Digital Media in the Shaping of Transnational Memories on Disappearance
Researcher (PI) Silvana Mandolessi
Host Institution (HI) KATHOLIEKE UNIVERSITEIT LEUVEN
Call Details Starting Grant (StG), SH5, ERC-2015-STG
Summary The project seeks to study the role of digital media in the shaping of transnational memories on disappearance. It investigates a novel case that is in process of shaping: the disappearance of 43 students in Mexico in September 2014. The role of the new media in getting citizens’ attention and in marking a “turning point” was crucial to the upsurge of a counter-movement against the Mexican government and qualifies the event as significant for the transnational arena.
The groundbreaking aspect of the project consists in proposing a double approach:
a) a theoretical approach in which “disappearance” is considered as a particular crime that becomes a model for analyzing digital memory. Disappearance is a technology that produces a subject with a new ontological status: the disappeared are non-beings, because they are neither alive nor dead. This ontological status transgresses the clear boundaries separating life and death, past, present and future, materiality and immateriality, personal and collective spheres. “Digital memory”, i.e. a memory mediated by digital technology, is also determined by the transgression of the boundaries of given categories
b) a multidisciplinary approach situating Mexico´s case in a long transnational history of disappearance in the Hispanic World, including Argentina and Spain. This longer history seeks to compare disappearance as a mnemonic object developed in the global sphere –in social network sites as blogs, Facebook, Twitter and YouTube– in Mexico and the social performances and artistic representations –literature, photo exhibitions, and films– developed in Spain and Argentina.
The Mexican case represents a paradigm for the redefinition of the relationship between media and memory. The main output of the project will consist in constructing a theoretical model for analyzing digital mnemonic objects in the rise of networked social movements with a transnational scope.
Summary
The project seeks to study the role of digital media in the shaping of transnational memories on disappearance. It investigates a novel case that is in process of shaping: the disappearance of 43 students in Mexico in September 2014. The role of the new media in getting citizens’ attention and in marking a “turning point” was crucial to the upsurge of a counter-movement against the Mexican government and qualifies the event as significant for the transnational arena.
The groundbreaking aspect of the project consists in proposing a double approach:
a) a theoretical approach in which “disappearance” is considered as a particular crime that becomes a model for analyzing digital memory. Disappearance is a technology that produces a subject with a new ontological status: the disappeared are non-beings, because they are neither alive nor dead. This ontological status transgresses the clear boundaries separating life and death, past, present and future, materiality and immateriality, personal and collective spheres. “Digital memory”, i.e. a memory mediated by digital technology, is also determined by the transgression of the boundaries of given categories
b) a multidisciplinary approach situating Mexico´s case in a long transnational history of disappearance in the Hispanic World, including Argentina and Spain. This longer history seeks to compare disappearance as a mnemonic object developed in the global sphere –in social network sites as blogs, Facebook, Twitter and YouTube– in Mexico and the social performances and artistic representations –literature, photo exhibitions, and films– developed in Spain and Argentina.
The Mexican case represents a paradigm for the redefinition of the relationship between media and memory. The main output of the project will consist in constructing a theoretical model for analyzing digital mnemonic objects in the rise of networked social movements with a transnational scope.
Max ERC Funding
1 444 125 €
Duration
Start date: 2016-07-01, End date: 2021-06-30
Project acronym DUST-IN-THE-WIND
Project Dust in the wind — a new paradigm for inflow and outflow structures around supermassive black holes
Researcher (PI) Sebastian Florian Hoenig
Host Institution (HI) UNIVERSITY OF SOUTHAMPTON
Call Details Starting Grant (StG), PE9, ERC-2015-STG
Summary Active galactic nuclei (AGN) represent the active growing phases of supermassive black holes. For the first time, we are able to resolve the dusty gas on parsec scales and directly test our standard picture of these objects. While this “unification scheme” relates the parsec-scale IR emission with a geometrically-thick disk, I have recently found that the bulk of the dust emission comes from the polar region of the alleged disk where gas is blown out from the vicinity of the black hole. Along with these polar features, the compactness of the dust distribution seems to depend on the accretion state of the black hole. Neither of these findings have been predicted by current models and lack a physical explanation.
To explain the new observations, I proposed a revision to the AGN unification scheme that involves a dusty wind driven by radiation pressure. Depending on their masses, velocities, and frequency, such dusty winds might play a major role in self regulating AGN activity and, thus, impact the interplay between host and black hole evolution. However, as of now we do not know if these winds are ubiquitous in AGN and how they would work physically. Upon completion of the research program, I want to
• characterise the pc-scale mass distribution, its kinematics, and the connection to the accretion state of the AGN,
• have a physical explanation of the dusty wind features and constrain its impacts on the AGN environment, and
• have established dust parallax distances to several nearby AGN, as a multi-disciplinary application of the constraints on the dust distribution.
For that, I will combine the highest angular resolution observations in the IR and sub-mm to create the first pc-scale intensity, velocity, and density maps of a sample of 11 AGN. I will develop a new model that combines hydrodynamic simulations with an efficient treatment of radiative transfer to simulate dusty winds. Finally, direct distances to 12 AGN with a combined 3% precision will be measured.
Summary
Active galactic nuclei (AGN) represent the active growing phases of supermassive black holes. For the first time, we are able to resolve the dusty gas on parsec scales and directly test our standard picture of these objects. While this “unification scheme” relates the parsec-scale IR emission with a geometrically-thick disk, I have recently found that the bulk of the dust emission comes from the polar region of the alleged disk where gas is blown out from the vicinity of the black hole. Along with these polar features, the compactness of the dust distribution seems to depend on the accretion state of the black hole. Neither of these findings have been predicted by current models and lack a physical explanation.
To explain the new observations, I proposed a revision to the AGN unification scheme that involves a dusty wind driven by radiation pressure. Depending on their masses, velocities, and frequency, such dusty winds might play a major role in self regulating AGN activity and, thus, impact the interplay between host and black hole evolution. However, as of now we do not know if these winds are ubiquitous in AGN and how they would work physically. Upon completion of the research program, I want to
• characterise the pc-scale mass distribution, its kinematics, and the connection to the accretion state of the AGN,
• have a physical explanation of the dusty wind features and constrain its impacts on the AGN environment, and
• have established dust parallax distances to several nearby AGN, as a multi-disciplinary application of the constraints on the dust distribution.
For that, I will combine the highest angular resolution observations in the IR and sub-mm to create the first pc-scale intensity, velocity, and density maps of a sample of 11 AGN. I will develop a new model that combines hydrodynamic simulations with an efficient treatment of radiative transfer to simulate dusty winds. Finally, direct distances to 12 AGN with a combined 3% precision will be measured.
Max ERC Funding
1 475 171 €
Duration
Start date: 2016-05-01, End date: 2021-04-30
