Future talks

  • June25

    Daniel Caballero, University of Illinois Urbana-Champaign

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June 25, 2025:
Daniel Caballero

Affiliation: University of Illinois Urbana-Champaign

Title: Radial Modes of Relativistic Viscous Neutron Stars

Abstract: First order relativistic viscous theories had, until recently, been believed to not be well-behaved (i.e. causal, stable and strongly hyperbolic). Because of this, relativistic viscosity in astrophysical contexts has remained understudied. Recently, the Bemfica-Disconzi-Noronha-Kovtun (BDNK) theory has been shown to be causal, stable and strongly hyperbolic, which makes it a well-suited model for extending viscosity in the relativistic regime. In this presentation, I study the stability of neutron stars to viscous effects through perturbation theory and find necessary conditions for radial stability for the BDNK theory.

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Past talks

  • May 12

    Dr. Christian Pfeifer, University of Bremen, Germany

  • Feb 12

    Dr. Petros Steanou, Universidad de Alicante, Spain

  • Nov 14

    PhD cand. Lodovico Capuano, SISSA, Italy

  • Jul 19

    Dr. Deepak Kumar, IISER-Bhopal, India

  • Jul 12

    Prof. Sajal Mukherjee, BITS-Pilani, India

  • Jul 9

    MSc cand. Spyridon Thomopoulos, National Technical University of Athens, Greece

  • Jun 13

    Dr. Raimon Luna, University of Valencia, Spain

  • May 2

    Dr. Kyriakos Destounis, Sapienza University of Rome, Italy

  • Mar 11

    Prof. Sumanta Chakraborty, ICTS, India

  • Mar 7

    PhD cand. Valentin Deliyski, University of Sofia, Bulgaria

  • Feb 28

    Dr. Horacio Vieira, University of Lavras, Brazil

  • Feb 26

    Dr. Thomas Celora, ICE, Bellaterra, Spain

  • Feb 8

    Dr. Areti Eleni, University of Athens, Greece

  • Feb 8

    Prof. Theocharis Apostolatos, University of Athens, Greece

  • Feb 2

    PhD cand. Anson Yip, Chinese University of Hong Kong, Hong Kong

  • Feb 1

    PhD cand. Lodovico Capuano, SISSA, Italy

  • Jan 12

    Shreya Shah, University of Tübingen, Germany

  • Dec 1

    Dr. Luis Nunes dos Santos, University of Tübingen, Germany

  • Nov 23

    Dr. Shafqat Riaz, University of Tübingen, Germany

  • Nov 2

    Prof. Hajime Sotani, RIKEN, Japan

  • Oct 12

    Mariachiara Celato, University of Tübingen, Germany

  • Jul 28

    Prof. Galin Gyulchev, University of Sofia, Bulgaria

  • Jul 12

    Dr. Sebastian Völkel, AEI Potsdam, Germany

  • Jul 5

    PhD cand. Llibert Aresté Saló, Queen Mary, University of London, UK

  • Jun 27

    Prof. Jörg Frauendiener, University of Otago, New Zealand

  • May 26

    Prof. Christos Charmousis, Université Paris-Saclay, France

  • May 19

    Dr. Laura Sberna, AEI Potsdam, Germany

  • Mar 20

    Dr. Arthur Suvorov, Manly Astrophysics, Australia

  • Mar 16

    Dr. Hao-Jui Kuan, AEI Potsdam, Germany

  • Jan 25

    Saulo Soares, Paraiba, Brazil

  • Dec 15

    Prof. Dr. Hajime Sotani, RIKEN, Japan

  • Dec 8

    Dr. Areti Eleni, University of Athens, Greece

  • Dec 1

    Dr. Andrew Coates, Koç University, Turkey

  • Nov 2

    Alex David Kerin, University of Melbourne, Australia

  • Sep 22

    Dr. Roland Haas, University of Illinois Urbana-Champaign, USA

  • Jul 22

    Dr. Dina Traykova, AEI, Potsdam Germany

  • Jul 8

    Prof. Hajime Sotani, Kyoto University, Japan

  • Jun 10

    Prof. Marc Casals, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil; Institut für Theoretische Physik, Universität Leipzig, Germany

  • Jun 3

    Dr. Miguel Bezares, SISSA, Trieste, Italy

  • May 27

    Prof. Lijing Shao, KIAA at Peking University, Beijing, China

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