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Ultrafast compact binary mergers
Paz Beniamini, Tsvi Piran
The duration of orbital decay induced by gravitational waves (GWs) is often the bottleneck of the evolutionary phases going from star formation to a merger. We show here that kicks…
A Numerical Study of Relativistic Oblique Shock Reflection
Prasanta Bera, Jonathan Granot, Michael Rabinovich +1
Shocks are ubiquitous in astrophysical sources, many of which involve relativistic bulk motions, leading to the formation of relativistic shocks. Such relativistic shocks have so f…
Internal Shocks Hydrodynamics: the Collision of Two Cold Shells in Detail
Sk. Minhajur Rahaman, Jonathan Granot, Paz Beniamini
Emission in many astrophysical transients originates from a shocked fluid. A central engine typically produces an outflow with varying speeds, leading to internal collisions within…
Ultra High Energy Cosmic Rays from Tidal Disruption Events
Tsvi Piran, Paz Beniamini
The tidal disruption event AT2018hyz was a regular optically detected one with no special prompt features. However, it suddenly displayed a fast-rising radio flare almost three yea…
An off-axis relativistic jet seen in the long lasting delayed radio flare of the TDE AT 2018hyz
Itai Sfaradi, Paz Beniamini, Assaf Horesh +8
The Tidal Disruption Event (TDE) AT 2018hyz exhibited a delayed radio flare almost three years after the stellar disruption. Here we report new radio observations of the TDE AT 201…
Constraining the long-lived supramassive neutron stars by magnetar boosted kilonovae
Hao Wang, Paz Beniamini, Dimitrios Giannios
Kilonovae are optical transients following the merger of neutron star binaries, which are powered by the r-process heating of merger ejecta. However, if a merger remnant is a long-…