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Limits on mass outflow from optical tidal disruption events
Tatsuya Matsumoto, Tsvi Piran
The discovery of optical/UV tidal disruption events (TDEs) was surprising. The expectation was that, upon returning to the pericenter, the stellar-debris stream will form a compact…
Radiative Emission Mechanisms of Tidal Disruption Events
Nathaniel Roth, Elena M. Rossi, Julian H. Krolik +3
We describe how the various outcomes of stellar tidal disruption give rise to observable radiation. We separately consider the cases where gas circularizes rapidly into an accretio…
Searching for the radio remnants of short duration gamma-ray bursts
Roberto Ricci, Eleonora Troja, Gabriele Bruni +8
Neutron star mergers produce a substantial amount of fast-moving ejecta, expanding outwardly for years after the merger. The interaction of these ejecta with the surrounding medium…
Measuring stellar and black hole masses of tidal disruption events
Taeho Ryu, Julian Krolik, Tsvi Piran
The flare produced when a star is tidally disrupted by a supermassive black hole holds potential as a diagnostic of both the black hole mass and the star mass. We propose a new met…
Afterglow constraints on the viewing angle of binary neutron star mergers and determination of the Hubble constant
Ehud Nakar, Tsvi Piran
One of the key properties of any binary is its viewing angle (i.e., inclination), . In binary neutron star (BNS) mergers it is of special importance due to the role th…
Shock within a shock: revisiting the radio flares of NS merger ejecta and GRB-supernovae
Ben Margalit, Tsvi Piran
Fast ejecta expelled in binary neutron star (NS) mergers or energetic supernovae (SNe) should produce late-time synchrotron radio emission as the ejecta shocks into the surrounding…