Lensing and Wave Optics in Strong Gravity

Gravitational lensing represents a characteristic feature of astrophysical systems in strong gravitational fields, such as the supermassive black holes recently observed by the Event Horizon Telescope. On the other hand, strong gravitational fields are also being probed by the LIGO-Virgo-KAGRA observations of gravitational waves. With the rapidly increasing number of observed gravitational waves, it is expected that a small portion of these events will be gravitationally lensed. This workshop aims to bring together members of the astrophysical community working on lensing and wave effects in strong gravitational fields and to discuss physics relevant for both the Event Horizon Telescope and LIGO-Virgo-KAGRA observations. We plan to discuss the current open problems and perspectives in the field, facilitate the transfer of techniques between the much more mature field of lensing of electromagnetic waves towards novel studies in the lensing of gravitational waves, as well as to see how wave effects beyond the standard lensing approaches could be incorporated. 

Schedule (pdf)

Dec. 9, 2024
09:00 — 09:30
Registration & Welcome
09:30 — 10:30
Luciano Rezzolla (Goethe U Frankfurt)
M87* and Sgr A*: Imaging supermassive black holes
10:45 — 11:15
Coffee Beak
11:15 — 12:15
12:30 — 14:30
Lunch Break
14:30 — 15:00
Nezihe Uzun (CFT PAN)
Gaussian beams and caustic avoidance
15:15 — 16:00
Coffee Break
16:00 — 16:30
Dec. 10, 2024
09:45 — 10:15
10:30 — 11:00
Coffee Beak
11:45 — 12:15
Alex Lupsasca (Vanderbilt U, Nashville)
The Black Hole Photon Ring
12:30 — 14:30
Lunch Break
15:15 — 16:00
Coffee Break
Dec. 11, 2024
09:45 — 10:15
10:30 — 11:00
Coffee Beak
11:00 — 11:30
Hector Villarrubia-Rojo (U Complutense de Madrid)
Efficient methods for wave-optics lensing
12:30 — 14:30
Lunch Break
14:30 — 15:00
15:15 — 16:00
Coffee Break

Group photo at the start of the coffee break

18:30
Conference dinner
Dec. 12, 2024
09:00 — 09:30
09:45 — 10:15
10:30 — 11:00
Coffee Beak
12:30 — 14:30
Lunch Break
15:15 — 16:00
Coffee Break
Dec. 13, 2024
09:00 — 09:30
Carlos A. R. Herdeiro (UAVR)
Light ring topological theorems
10:30 — 11:00
Coffee Beak
11:00 — 11:30
Pierre Fleury (CNRS, Montpellier)
Line-of-sight effects in strong gravitational lensing
12:30 — 14:30
Lunch Break
15:15 — 15:45
Coffee Break
16:30 — 16:45
Closing statements

Organizers

Name Affiliation
Pedro Cunha University of Aveiro
Marius A. Oancea University of Vienna
Miguel Zumalacárregui Max Planck Institute for Gravitational Physics

Attendees

Name Affiliation
Peter C. Aichelburg University of Vienna
Parameswaran Ajith International Center for Theoretical Sciences
Drew Backhouse King's College London
Ankur Barsode International Center for Theoretical Sciences
Ginevra Braga Gran Sasso Science Institute
Richard Brito Instituto Superior Técnico Lisboa
Xian Chen Peking University
Han Gil Choi Institute for Basic Science
Wan Cong University of Vienna
Giulia Cusin Institut d’Astrophysique de Paris
Uddeepta Deka International Center for Theoretical Sciences
Alejandro Estrada University of Vienna
Jose M. Ezquiaga Niels Bohr Institute
David Fajman University of Vienna
Filip Ficek University of Vienna
Pierre Fleury CNRS, Montpellier
Matilde Garcia Niels Bohr Institute
Serena Giardino Max Planck Institute for Gravitational Physics
Srashti Goyal Max Planck Institute for Gravitational Physics
Finnian Gray University of Vienna
Galin Gyulchev Sofia University
Otto Hannuksela The Chinese University of Hong Kong
Sreekanth Harikumar National Centre for Nuclear Research (NCBJ)
Abraham Harte Dublin City University
Carlos A. R. Herdeiro University of Aveiro
Justin Janquart Université Catholique Louvain
Dylan Jow Stanford University
Vladimir Karas Czech Academy of Sciences, Astronomical Institute
Mikołaj Korzyński Center for Theoretical Physics, Polish Academy of Sciences
Tjonnie Li Katholieke Universiteit Leuven
Xinyi Lin Beijing Normal University
Rico Lo Niels Bohr Institute
Alex Lupsasca Vanderbilt University
Maciej Maliborski University of Vienna
Nicola Menadeo Scuola Normale Meridionale
Thomas Mieling University of Vienna
Hayato Motohashi Kogakuin University
Petya Nedkova Sofia University
João Novo University of Aveiro
Maximilian Ofner University of Vienna
Héctor Raúl Olivares Sánchez University of Aveiro
Volker Perlick University of Bremen
Dennis Philipp Center for Applied Space Technology and Microgravitation, University of Bremen
Martin Pijnenburg Universite de Geneve
Luciano Rezzolla Goethe University Frankfurt
Claire Rigouzzo King's College London
Johan Samsing Niels Bohr Institute
Ivo Sengo University of Aveiro
Xikai Shan Tsinghua University
Walter Simon University of Vienna
Graham Smith University of Birmingham
Sudhagar Suyamprakasam Nicolaus Copernicus Astronomical Center Polish Academy of Sciences
Oleg Tsupko Center for Applied Space Technology and Microgravitation, University of Bremen
Helena Ubach Universitat de Barcelona, ICCUB
Juan Urrutia National Institute of Chemical Physics and Biophysics
Nezihe Uzun Center for Theoretical Physics, Polish Academy of Sciences
Hector Villarrubia-Rojo Universidad Complutense de Madrid
Luka Vujeva Niels Bohr Institute
Hanxi Wang University of Oxford
Felix Willenborg Center for Applied Space Technology and Microgravitation, University of Bremen
Man Chun Yeung University of Wisconsin-Milwaukee
Jaime Redondo Yuste Niels Bohr Institute
Iman Zabett None
Lorena Zertuche Niels Bohr Institute
Preview of Jose M. Ezquiaga - Gravitational Wave Lensing: Current Searches and Future Prospects
Jose M. Ezquiaga (NBI, Copenhagen): Gravitational Wave Lensing: Current Searches and Future Prospects
Dec. 9, 2024 11:15 — 12:15
Preview of Felix Willenborg - Exact wave-optical imaging of black hole spacetimes
Felix Willenborg (ZARM, Bremen): Exact wave-optical imaging of black hole spacetimes
Dec. 9, 2024 16:00 — 16:30
Preview of Mikołaj Korzyński - Bi-local approach to geometrical optics in GR
Mikołaj Korzyński (CFT PAN): Bi-local approach to geometrical optics in GR
Dec. 10, 2024 09:45 — 10:15
Preview of Alex Lupsasca - The Black Hole Photon Ring
Alex Lupsasca (Vanderbilt U, Nashville): The Black Hole Photon Ring
Dec. 10, 2024 11:45 — 12:15
Preview of Héctor Raúl Olivares Sánchez - A simulation pipeline for nearly circular supermassive black hole binaries
Héctor Raúl Olivares Sánchez (UAVR): A simulation pipeline for nearly circular supermassive black hole binaries
Dec. 11, 2024 09:00 — 09:30
Preview of Xian Chen - Why are LIGO/Virgo Black Holes So Massive?
Xian Chen (Peking U): Why are LIGO/Virgo Black Holes So Massive?
Dec. 11, 2024 09:45 — 10:15
Preview of Abraham Harte - What is high-frequency approximation?
Abraham Harte (Dublin City U): What is high-frequency approximation?
Dec. 11, 2024 14:30 — 15:00
Preview of Johan Samsing - Measuring Proper Motion of GW Sources with Strong Lensing Events
Johan Samsing (NBI, Copenhagen): Measuring Proper Motion of GW Sources with Strong Lensing Events
Dec. 11, 2024 16:00 — 16:30
Preview of Volker Perlick - Gravitational lensing in the presence of a plasma
Volker Perlick (U Bremen): Gravitational lensing in the presence of a plasma
Dec. 12, 2024 09:00 — 09:30
Preview of Hayato Motohashi - Spin wave optics of gravitational waves
Hayato Motohashi (Kogakuin U): Spin wave optics of gravitational waves
Dec. 12, 2024 09:45 — 10:15
Preview of Carlos A. R. Herdeiro - Light ring topological theorems
Carlos A. R. Herdeiro (UAVR): Light ring topological theorems
Dec. 13, 2024 09:00 — 09:30
At a glance
Type:
Workshop
When:
Dec. 9, 2024 — Dec. 13, 2024
Where:
ESI Boltzmann Lecture Hall
Organizer(s):
Pedro Cunha (UAVR)
Marius A. Oancea (U of Vienna)
Miguel Zumalacárregui (MPIGP, Potsdam)