Astrophysics News & Events

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Core-collapse of fast rotators in the early universe

Speaker
Koh Takahashi (Max Planck Institute for Gravitational Physics)
Event date
Venue
online (only)
Event type
Seminars
Abstract:
It is widely believed that the fast rotation of a massive star affects the dynamics of core-collapse and eventually results in the most luminous event in the present universe, the long gamma-ray burst (LGRB). Another important consequence of the fast rotation would be an energetic supernova explosion, which is often observed to be associated with LGRBs.
High Energy Physics
Astrophysics

Stellar compact mergers as progenitors of short-gamma ray bursts

Speaker
Milton Ruiz Meneses (University of Illinois at Urbana-Champaign)
Event date
Venue
online (only)
Event type
Seminars

Stellar Compact object mergers are not only important sources of gravitational waves but also central engines that power electromagnetic transients and r-processes, if matter is involved. I will review recent progress modeling the merger of black hole-neutron star and neutron stars binaries highlighting state-of-the-art general relativistic hydrodynamic simulations.

Strong Gravity
High Energy Physics
Astrophysics

Kerr (smooth) deviations and Symmetries

Speaker
Georgios O. Papadopoulos
Event date
Venue
online (only)
Event type
Seminars

A novel approach in constructing deviations of the Kerr spacetime whereas
the symmetries can be preserved is presented. The method was applied
trivially in all known classical black-hole spacetimes tested, while
provides the possibility of testing and inventing deformations of Kerr in
a quick and innovative way. The methodology is based on earlier work by

Strong Gravity
Astrophysics