From Black Holes to the Cosmos: Matt Visser’s journey through space and time!

Aug 24, 2026, 9:00 AM → Aug 28, 2026, 6:00 PM Europe/Rome

SISSA (Miramare Campus)

This conference honors the scientific legacy of Matt Visser, whose pioneering work has profoundly influenced our understanding of general relativity, quantum field theory in curved spacetime, wormholes, energy conditions, analogue gravity, and beyond. Gathering colleagues, collaborators, and students from around the world, the meeting will highlight recent developments at the interface of geometry, gravitation, and quantum theory, while celebrating Visser's distinctive contributions to these fields. The conference will be hosted in the Aula Magna of SISSA Miramare Campus.

Invited speakers (TBC):
Matt Visser
Carlos Barceló
Ivan Booth
Erik Curiel
Fay Dowker
Ted Jacobson
Eleni-Alexandra Kontou
Francisco Lobo
Robert Mann
Eric Poisson
Ralf Schützhold
Thomas Sotiriou
Silke Weinfurtner
Cliff Will
David Wiltshire
 

 

Sponsors:

     

Poster.pdf

Mon, August 24

Welcome Reception

Erik Curiel

10:30 AM Coffee Break

Thomas Sotiriou

Ivan Booth

1:00 PM Lunch

Uwe R. Fischer - (Volume-law scaling for entanglement negativity from the Hawking radiation of analogue black holes)

The quantum information content of Hawking radiation holds the key to understanding black-hole evaporation and the fate of unitarity. Motivated by recent advances in cold-atom experiments, we develop a lattice-regularization approach aimed at simulating the coarse-grained entanglement scaling of a quantum field in a 1+1D analogue black-hole background. We provide the first concrete demonstration that logarithmic negativity --- an entanglement monotone that typically exhibits a UV-divergent log-scaling for the conformal vacuum --- acquires a UV-finite volume term from the nonlocal correlations seeded by Hawking radiation. We show that this volume term encodes both the number density and spatial distribution of entangled Hawking pairs along the black-hole interior and exterior. We highlight its prospective detection in currently realizable experiments as well as its implications beyond the analogue paradigm, in particular for black-hole thermodynamics. [Preprint https://arxiv.org/abs/2604.02075][1] [1]: https://arxiv.org/abs/2604.02075

Goffredo Chirco - (Metric-Deformed Poisson Sigma Models: Dissipative Extensions of JT Gravity and Boundary Dynamics)

I will discuss a metric deformation of the Poisson Sigma Model as a controlled departure from its purely topological and conservative dynamics. Focusing on the SL(2,R) formulation of Jackiw–Teitelboim gravity, I will argue that such a deformation may provide an effective description of non-conservative, coarse-grained, or quantum-gravitational corrections to near-AdS2 dynamics. In particular, the model suggests a possible way to interpolate between ideal near-extremal horizon boundary dynamics and more dissipative, Schwarzschild-like regimes.

Adrian del Rio - (Electromagnetic duality anomaly in waveguides: a non-inertial analogue of chiral gravitational effects.)

Maxwell theory in vacuum possesses an electromagnetic duality symmetry whose associated Noether charge measures the helicity of classical electromagnetic waves. While this charge is conserved classically —even in gravitational fields— its vacuum expectation value (VEV) in quantum field theory can become time-dependent in curved spacetimes [arXiv:1607.08879]. This effect constitutes a quantum anomaly for spin 1 fields, analogous to the Adler-Bell-Jackiw anomaly for fermions, and arises when the background geometry develops a chiral structure, for instance when the gravitational field carries a flux of circularly polarized gravitational waves [arXiv: 2002.01593]. In this talk, I present a flat-spacetime realization of this anomaly in a non-inertial setting. I consider the quantization of the electromagnetic field in a static cylindrical waveguide with respect to observers initially at rest and later undergoing relativistic helical motion. I show that the early-time inertial vacuum is perceived at late times as a multi-photon state with an imbalance between right- and left-handed modes, leading to a non-conservation of the VEV of the duality charge. The underlying mechanism involves two ingredients: (i) a mismatch between early- and late-time notions of positive frequency due to the observers’ acceleration, which leads to photon pair creation, and (ii) a spectral asymmetry between right- and left-handed modes arising from effectively chiral boundary conditions in the late-time helical frame. Together, these produce a net photon helicity imbalance from the quantum vacuum. This provides a controlled analogue of gravitational chiral phenomena for spin-1 fields, and opens new avenues for exploring quantum anomalies in analogue gravity and photonic systems.

Adolfo Cisterna - (New Dynamical Black Hole Solutions: Extending the Spectrum of Exact Primordial Objects)

Constructing exact solutions describing compact objects embedded in dynamical cosmological environments remains a major challenge in General Relativity, with most known results restricted to highly symmetric settings. In this talk, we present new exact solutions and solution-generating techniques that extend the analytical description of dynamical black holes in cosmological backgrounds. First, we introduce a novel method for the self-interacting Einstein–scalar system that generates non-stationary, axisymmetric geometries. Using this approach, we obtain the first exact solution describing a dynamical axisymmetric black (or white) hole embedded in an expanding or contracting cosmology. Its dynamical trapping horizons are characterized using the mean curvature vector, which generalizes the Kodama vector beyond spherical symmetry and allows a foliation-independent identification of trapped and untrapped regions. We then construct a new exact solution of the Einstein–scalar–Maxwell system describing a dynamical black hole interacting with a time-dependent external electromagnetic field. The configuration is obtained by dressing a Schwarzschild black hole with a radially and temporally varying scalar field within the Fonarev framework, producing a time-dependent generalization of the Fisher–Janis–Newman–Winicour solution. An external electromagnetic field is subsequently generated through a Lie point symmetry extending the Harrison transformation to dynamical settings. The resulting spacetime features a dynamical horizon, an axisymmetric electromagnetic field, and asymptotics combining Friedmann–Lemaître–Robertson–Walker and Levi–Civita geometries. We analyze the geometric and physical properties of these solutions, including their horizon structure and asymptotic behavior. Notably, time dependence can cloak curvature singularities that would otherwise be naked in stationary limits. These results provide new analytical tools to explore dynamical compact objects in cosmology, with potential applications to primordial black holes.

3:50 PM Coffee Break

Massimiliano Rinaldi - (Aspects of cosmological coupling)

The idea that compact objects are coupled to the expansion of the universe was put forward almost a century ago by McVittie, who introduced a specific metric that, however, exhibits naked singularities. Since then, many authors have attempted to improve the McVittie solution to eliminate the singularity, with limited success. In recent years, the cosmological coupling of compact objects has resurfaced prominently, driven by new theoretical arguments and observations. In this talk, I will offer a brief survey of this topic and present some recent insights.

Johanna Borissova - (Regular black holes in quasi-topological gravity)

Integrable $2D$ dilaton theories play a central role in discussions of black holes in a variety of approaches to classical and quantum gravity. They can be obtained from the spherical reduction of $d\geq 4$ quasi-topological gravities, and in particular onshell configurations for the $2D$ metric and scalar field represent genuine $d$-dimensional vacuum solutions. This talk will discuss the reconstruction of generic $d$-dimensional static spherically symmetric black holes satisfying $g_{tt}g_{rr}=-1$ in Schwarzschild gauge as quasi-topological vacuum solutions, and use this reconstruction to establish a unified framework for their black hole thermodynamics. I will illustrate that the generating function determining $f(r) = -g_{tt}$ in the integrated equation of motion provides the thermodynamic mass in a first law which can be derived for any such black hole by an application of Wald's Noether charge formalism.

Antonio Panassiti - (Null convergence condition in regular black-hole spacetimes with Minkowski core)

Recent works in the literature have addressed how (i) black holes with de Sitter core circumvent the Hawking–Penrose (1970) singularity theorem, and (ii) geometries with either a de Sitter or Minkowski core can be obtained from effective models of asymptotically safe gravitational collapse, based on the high-energy behavior of the vanishing Newton coupling. Here, we investigate how generic black holes with Minkowski core specifically bypass the hypothesis of the singularity theorem on the convergence condition for geodesics. We prove that, independently of the generating dynamics, they always violate already the null convergence condition (NCC), differently from geometries with de Sitter core which always violate only the timelike convergence condition (TCC). Upon giving concrete examples of such non-singular black holes--typically characterized by exponential mass functions which can be either analytically expandable or not, we discuss the deeper physical feature encoded in the violation of the NCC. In particular, ingoing trajectories of the congruence of radial timelike geodesics approaching the Minkowski core of a black-hole spacetime undergo an additional phase where their focusing slows down to the point of reaching a state of fully parallel flow.

Justin Feng - (Event horizon termination and the emergence of Lorentz signature)

In this talk, I describe in detail how one might understand the termination of the event horizon of a black hole in terms of a quasiregular singularity characterized by points possessing two future-directed light cones and two past-directed light cones (in fact this spacetime is conformal to a region of the 1+1 trousers spacetime). I then discuss Euclidean signature shift-symmetric scalar-tensor theories from which one can extract a Lorentzian structure, and show how this theory can provide a microscopic description for the aforementioned singularities. I discuss some recent works on the emergence of Lorentzian dispersion relations and a model for the big bang, as well as some preliminary and ongoing work on understanding compact objects in this class of theories.

Tue, August 25

Eleni-alexandra Kontou

10:30 AM Coffee Break

Clifford Will

Eric Poisson

1:00 PM Lunch

Raúl Carballo-Rubio - (Black holes in regular gravitational theories)

The study of gravitational theories in which the singular character of general relativity is alleviated is an active area of research. In particular, a great deal of effort has been devoted to finding theories in which black hole interiors are regular. Regularizing vacuum black hole solutions can provide guidance in the exploration of the landscape of theories beyond general relativity. In this talk, I will discuss explorations of the behavior of these theories in non-vacuum and dynamical situations.

Jacopo Mazza - (Beyond circles: stationary axisymmetric black holes and the breaking of circularity)

Circularity is an accidental symmetry of the Kerr metric, one that is widely assumed when searching for rotating black hole solutions in modified gravity as well as when constructing models of Kerr mimickers. Though extremely enticing, circularity is often an excessively restrictive assumption, and understanding the consequences of its loss is thus crucially relevant. In this seminar, I wish to present some recent results on the subject: after describing in detail what this symmetry entails, I will show how to construct stationary and axisymmetric spacetimes exhibiting a controlled breaking of circularity; then, I will describe the impact of circularity breaking on the hole’s horizon, focusing in particular on the laws of black hole mechanics. This discussion is thus going to be pertinent for anyone with an interest in compact astrophysical objects and their phenomenology, in general relativity and beyond.

Finnian Gray - (The hidden symmetries of slowly rotating black holes)

I will discuss a recently proposed class of Generalized Lense–Thirring spacetimes in all dimensions. The class represent an ansatz for slowly rotating black holes which can be applied to solve the equations of motion, to linear order in the rotation parameters, for a wide variety of gravitational theories including Einstein--Gravity. In this case it is equivalent to the original Lense--Thiring solution to linear order. However, the class has the following remarkable properties which go beyond ordinary Lense--Thrring spacetimes: 1) It is regular on the horizon, 2) it can be put into Painlevé--Gullstrand (in-falling) coordinates, and most remarkably 3), it has a growing tower of hidden symmetries which in higher dimensions is greater than the number of explicit isometries. In this construction, the key ingredient is the non-commutativity of the underlying Killing vectors of the base space. The growing rank irreducible Killing tensors are determined by the structure constants of the corresponding Lie algebra. These hidden symmetries and the resultant constants of motion underpin the integrability and separability of test particles and fields in these spacetimes, thus allowing physical observables to be easily characterized.

Hamed Barzegar - (Warp Drive: a Gedankenexperiment taken too far)

In this talk, I provide a systematic classification and critical evaluation of warp-drive spacetimes, to which Prof. Visser has made significant contributions. Moving beyond the popular "creative" approach, I adopt a rigorous "agonistic" methodology to address the recent renaissance of claims regarding physically feasible, positive-energy warp drives. By applying a basic principle, which mandates mathematical consistency within General Relativity (GR) prior to physical speculation, we identified fundamental errors and misconceptions in existing literature. I will present a model hierarchy distinguishing between Restricted Warp (R-Warp)--encompassing most proposals--and more generalized configurations. The presentation focuses on demystifying these models through several no-go theorems, e.g.: 1) It is impossible to construct a superluminal R-Warp model that is globally hyperbolic. 2) The ADM energy for R-Warp models is generically zero, exposing the mathematical ambiguity of "total mass" calculations used in many studies. 3) I will contrast the "creative" approach (Synge G-method) with the "realistic" one, highlighting how the former often leads to "fantastic" but unphysical results. Finally, by recalling a proof that R-Warp models fundamentally violate the null energy condition (due to Santiago, Schuster, and Visser 2022), we conclude that warp drives are best viewed as Gedankenexperiments for probing the boundaries of GR rather than viable technological blueprints. Time permitting, I will link these spacetimes to cosmological models.

3:50 PM Coffee Break

Sebastian Schuster - (Science-Fiction Double Feature: Of Time Travel and Warp Drives)

General relativity and cosmology have had a generous influx of ideas from science-fiction, with Matt contributing and influencing these developments significantly. The metric reverse-engineering that is at the core of this, is frequently called into question on diverse grounds—some better, some less so. Warp drives in particular have seen a recent resurgence with substantial controversy. In this talk, I will explain why reverse-engineering is a fine, time-honoured tradition beyond general relativity; why point-wise energy conditions are middling, at best; and why the the fate of these speculative metrics needs to be decided by the (so-far) equally speculative field of quantum gravity. After a summary of recent work on warp drives and their extensions, I will give an example of what sort of problem quantum gravity would have to solve in such contexts: Time travel through the lens of relational quantum dynamics. I will wrap up with some ideas on how to extent these first toy models to unwieldy physics besides time travel.

Jonathan Barenboim - (Evaporating regular black holes in 2D gravity)

Quantum field theory in curved spacetime predicts that black holes evaporate through Hawking radiation, but without a full quantum treatment of gravity the endpoint of the process is not yet understood. This talk will present a general model of evaporating black holes in 2D dilaton gravity, with a focus on a Bardeen-like regular black hole model. The formation and evaporation of a black hole, including backreaction, is simulated numerically. We find that the apparent horizons evaporate smoothly in finite time and that the final spacetime is free of pathologies such as singularities, event horizons, or Cauchy horizons. These results suggest that resolving the singularity could be a viable solution to the black hole information loss problem

Massimiliano Spadafora - (Semiclassical Black Hole - White Hole transition: an analytical treatment)

Recent progress in semiclassical gravity is suggesting that, in spherical black holes with outer and inner horizons, the Hawking process drives the complete evaporation of the trapped region in timescales shorter than the Hawking time. However, this does not mark the end of the story, as this process is accompanied by the formation of an anti-trapped region, or white hole. In this work, we present a novel analytic treatment of black hole evaporation. Within simplified two-dimensional models describing the formation of charged and regular black holes, we show that the emergence of the anti-trapped region is unavoidable and is caused by the amplification of negative energy fluxes created along the \textit{outgoing} direction inside the black hole. This picture suggests that the energy fluxes originated by the white hole along the \textit{ingoing} direction can trigger the subsequent formation of a black hole, producing a cascade of black-to-white hole transitions which might terminate in a spacetime free of horizons. The analytic techniques developed in this work set the grounds to investigate this scenario in an exhaustive way.

Noa Zilberman - (The semiclassical energy outflux emerging from a collapsing shell)

When a compact object collapses to form a black hole, quantum field theory predicts the emission of an energy outflux to future null infinity, which later relaxes to Hawking radiation. Within the semiclassical framework, we derive a simple, closed form, analytical expression for the energy outflux emitted from a spherical thin null shell collapsing to form a black hole (in 4D). In particular, this energy outflux vanishes (quadratically in r-2M) as the shell approaches the horizon. This result refutes claims that the Hawking energy outflux originates from the collapsing body, showing instead that it develops in a broad strong-field region. Additionally, this vanishing implies that semiclassical backreaction cannot prevent or significantly affect the classical process of gravitational collapse and horizon formation (as sometimes claimed). This talk is based on the joint work arXiv:2503.00622 with Amos Ori.

Wed, August 26

David Wiltshire

10:30 AM Coffee Break

Fay Dowker

Carlos Barceló

1:00 PM Lunch

Ana Alonso Serrano - (Insights into the flow of information and the black hole information problem)

In this talk, I present our work on the information flow encoded in evaporation according to standard thermodynamics and on methods for performing a continuous entropy grouping (classical and quantum). I then present a similar analysis applied to the black hole information problem and explain how the study of a multipartite system can offer a new approach that does not introduce any new exotic physics on the path to solving the problem.

Alexander Kamenshchik - (Cosmological Singularities and Quantum Paricles)

We study if there is an opportunity to describe quantum particles in the vicinity of three types of cosmological singularities, big bang-big crunch, big rip and big brake. Writing down the Dirac equation for spinors, and choosing a convenient parametrization for basis functions of the spinor field, we show that the corresponding second-order differential equation has two independent solutions which are non-singular in the case of all three types of singularities. That permits us to construct the Fock space for the spinor particles and to interprete this fact as their opportunity to cross these cosmological singularities. We compare the results of this study with previous results obtained for scalar particles.

Roberto Casadio - (Gravitational collapse and integrable singularities)

The collapse of a regular compact object could undergo a stage containing integrable curvature singularities that can be properly described only using quantum physics. I will present a model for this stage in which the inner horizon shrinks and disappears, possibly leaving behind a matter core of macroscopic size. A model for the latter based on the quantisation of dust particle trajectories will also be briefly reviewed.

Marion Cromb - (Curved spacetimes and accelerated observers in experimental analogues)

In the Gravity Laboratory we use fluid systems to investigate curved spacetime and fundamental physics effects that are otherwise difficult to probe directly. Previously the group has used macroscopic water and superfluid vortices to measure analogues of black hole rotational superradiance. Now we aim to test the Unruh effect: the idea that an accelerating observer sees a quantum field - even the quantum vacuum - differently to an inertial one. We'll use the surface waves on a thin film of superfluid helium as our observed 'quantum field'. In particular I will discuss the different optical detection methods planned for such an experiment.

3:50 PM Social Activity

Thu, August 27

Francisco Lobo

10:30 AM Coffee Break

Ted Jacobson

Robert Mann

1:00 PM Lunch

Prado Martín Moruno - (Breaking symmetries: transverse diffeomorphisms, interacting dark fluids, and unified dark sector.)

We explore the cosmological implications of a restricted symmetry breaking in the gravitational sector, where standard diffeomorphism invariance (Diff) is reduced ma non troppo to transverse diffeomorphisms (TDiff) within the matter action. By considering scalar fields minimally coupled to gravity via arbitrary functions of the metric determinant, we demonstrate that the energy-momentum tensor naturally adopts a perfect fluid form under time-like conditions of the field. We analyse the resulting multi-field dynamics in a flat Robertson-Walker spacetime, revealing that this restricted symmetry breaking induces a natural, effective interaction and energy exchange between fields without requiring explicit interaction terms in the Lagrangian. This framework provides a robust, symmetry-principled foundation for interacting dark fluids. Furthermore, we unveil a formal dynamical equivalence between these TDiff formulations and non-canonical kinetic frameworks, mapping directly onto mimetic gravity scenarios when standard equivalence breaks down. Finally, we exploit these dualities to classify a specific family of effective dark fluids characterized by a vanishing speed of sound, successfully circumventing typical structure formation constraints and offering a compelling, unified description of the dark sector.

Antonia Micol Frassino - (Semi-classical black holes: recent advances and future prospects)

Semi-classical gravity provides a controlled framework for studying quantum effects in black hole physics in the absence of a complete theory of quantum gravity. In this talk, I will focus on recent developments in braneworld models of black holes, in which holography provides a way to account for the backreaction of quantum fields on the geometry. I will describe the resulting semiclassical black hole solutions and discuss how they can be used to investigate thermodynamic properties and geometric constraints beyond the classical regime. Particular attention will be given to the role of extended thermodynamics and to the constraints imposed by geometric inequalities. Finally, I will comment on some open directions and future developments motivated by these results.

Lorenzo Pisani - (Semiclassical effects near the Cauchy horizon of a Reissner-Nordström black hole)

While a formal solution to the problem of renormalization in semiclassical gravity has been understood for several decades, efficient computational prescriptions for implementing the renormalization in black hole spacetimes have only been developed in recent years. Since computing the renormalized expectation value of the stress-energy tensor is an essential step in solving the semiclassical Einstein equations, it is important that we have efficient schemes for its numerical computation. Working within the framework of the Taylor-Breen-Ottewill extended coordinate method, we present an extension of that method to the interior of spherically symmetric black holes that possess a Cauchy horizon. We obtain the renormalized vacuum polarization and stress-energy tensor in the interior of a Reissner-Nordström black hole and derive their behavior on the Cauchy horizon, highlighting how the mass of the field affects the regularity of the renormalized vacuum polarization on this horizon.

Marco de Cesare - (Gravity from a modified Bekenstein entropy law: cosmological consequences)

Different approaches to quantum gravity predict logarithmic corrections to the Bekenstein entropy. Generalizing Jacobson’s derivation of the gravitational field equations from spacetime thermodynamics, Alonso-Serrano and Liška have derived effective dynamics incorporating quantum gravity corrections. The resulting field equations are traceless, as in unimodular gravity, and feature a single free parameter which controls deviations from general relativity. We analyze the evolution of the cosmological background and primordial perturbations in this model, and discuss theoretical constraints.

3:50 PM Coffee Break

Jessica Santiago - (Primordial Black Holes, Charge, and Dark Matter: Rethinking Evaporation Limits)

Earlier studies investigating the allowed fraction of dark matter as primordial black holes (PBHs) tend to completely rule out PBHs with masses smaller than ~10^{-15} solar masses. This is due to the lack of evidence for Hawking radiation coming from the final evaporation stages of such small PBHs. These limits, however, make the key assumption that these PBHs can be modelled as uncharged, non-rotating Schwarzschild black holes. This talk concerns changes to these lower mass bounds when charge is included i.e., by going to Reissner–Nordström black holes as models for PBHs. In particular, the analysis presented here assumes a "dark" U(1) charge (assumed to be present in the early universe), and employs the Hiscock and Weems model for charged black hole evaporation to properly account for the Schwinger effect. By assigning a heavier dark electron mass and/or increasing its charge, this approach not only suppresses Hawking radiation but also mitigates Schwinger pair production, effectively extending the lifespan of PBHs beyond the age of the universe, bypassing the conventional wisdom that such small-mass black holes would have evaporated entirely by now.

Ilia Musco - (New perspectives on primordial black hole formation)

Primordial black holes (PBHs) can form from the collapse of large cosmological perturbations in the early Universe. In this talk, I will discuss recent advances in our understanding of PBH formation in different cosmological scenarios, including the radiation-dominated era, the electroweak and QCD phase transitions, and phases dominated by a massless scalar field. The resulting PBH population can span a broad range of masses, making PBHs compelling candidates for dark matter, potential sources of gravitational waves from binary mergers in the lower mass gap, and possible progenitors of the supermassive black holes observed at high redshift.

Marco Bruni - (Supermassive BHs seeds from direct collapse of CDM-curvature peaks in ΛCDM)

In the first part of this talk I will present results from numerical relativity simulations of a toy-model cosmic web  of over-densities,   voids and filaments  with the Einstein Toolkit,  evolving from standard growing-mode perturbative CDM  initial conditions  in the matter era, at z ~ 300. I will show  how  the first collapse  of peaks of over-densities is very well predicted by the simple "top hat” model (AKA Oppenheimer-Sneyer collapse). Although this simple cosmic web structure doesn’t assume any symmetries, the collapse of peaks is quasi-spherical, which naturally  leads to the conjecture that a horizon can form very early. In the second part I will briefly present current numerical relativity efforts to identify a horizon enclosing these CDM peaks, as well as analytic results  from Galoppo, Bruni and Harada 2605.30145 (based on exact solutions of Einstein equations) showing  that supermassive black hole seeds can form  from the direct collapse of the peaks of overdensities in the CDM distribution, with masses M ~ 10^3-10^6 at z ~ 10, or even earlier.

Diego Sáez-Chillón Gómez - (Compact objects physics in the realm of multi-messenger astronomy)

The reconstruction of the images of the supermassive objects at the centres of the M87 and Milky Way galaxies show two objects characterized by a central depression in luminosity (the so-called shadow) and a ring-shaped light structure around them. Both properties are closely linked to the emission intensity profile of the accretion disk and to the structure of spacetime. In addition, the detection of gravitational waves has made possible to study compact objects during the merger of binary systems of -mainly- black holes in order to test the Kerr family of solutions. In this talk, I will explain, on the one hand, the spacetime effects that influence the image obtained and how it may be used in the future to discern the existence of objects beyond the Kerr paradigm. Finally, I will also present the correspondence that exists between the shadow images and the spectrum of quasinormal modes of gravitational waves when such objects are perturbed. This is expected to play a fundamental role for the future multi-messenger astronomy of ultracompact objects.

Social Dinner

Fri, August 28

Ralf Schützhold

10:30 AM Coffee Break

Silke Weinfurtner

Matt Visser

1:00 PM Lunch