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Monte Carlo Simulations of the Photospheric Process
Rodolfo Santana, Patrick Crumley, Roberto A. Hernandez +1
We present a Monte Carlo (MC) code we wrote to simulate the photospheric process and to study the photospheric spectrum above the peak energy. Our simulations were performed with a…
Infrared emission from tidal disruption events --- probing the pc-scale dust content around galactic nuclei
Wenbin Lu, Pawan Kumar, Neal J. Evans
Recent UV-optical surveys have been successful in finding tidal disruption events (TDEs), in which a star is tidally disrupted by a supermassive black hole (BH). These TDEs release…
X-ray flares in GRBs: general considerations and photospheric origin
Paz Beniamini, Pawan Kumar
Observations of X-ray flares from Gamma Ray Bursts (GRBs) imply strong constraints on possible physical models. We provide a general discussion of these. In particular, we show tha…
Radiation from a Relativistic Poynting Jet: some general considerations
Pawan Kumar, Patrick Crumley
We provide estimates for the flux and maximum frequency of radiation produced when the magnetic field in a relativistic, highly magnetized, jet is dissipated and particles are acce…
Inverse-Compton drag on a Highly Magnetized GRB jet in Stellar Envelope
Chiara Ceccobello, Pawan Kumar
The collimation and evolution of relativistic outflows in -ray bursts (GRBs) are determined by their interaction with the stellar envelope through which they travel before reach…
How Bad/Good Are the External Forward Shock Afterglow Models of Gamma-Ray Bursts?
Xiang-Gao Wang, Bing Zhang, En-Wei Liang +8
The external forward shock (EFS) models have been the standard paradigm to interpret the broad-band afterglow data of gamma-ray bursts (GRBs). One prediction of the models is that…