Gamma-ray burst populations
نویسندگان
چکیده
Gamma-ray burst populations
منابع مشابه
Red-shift Distribution of Gamma-ray Bursts and Their Progenitors
Gamma ray bursts have been divided into two classes, long-soft gamma ray burst and short-hard gamma ray burst according to the bimodal distribution in duration time. Due to the harder spectrum and the lack of afterglows of short-hard bursts in optical and radio observations, different progenitors for short-hard bursts and long-soft bursts have been suggested. Based on the X-ray afterglow observ...
متن کاملLuminosity Functions of Gamma-Ray Burst Afterglows
Aims. Use the standard fireball model to create virtual populations of gamma-ray burst afterglows and study their luminosity functions. Methods. We randomly vary the parameters of the standard fireball model to create virtual populations of afterglows. We use the luminosity of each burst at an observer’s time of 1 day to create a luminosity function and compare our results with available observ...
متن کاملGamma-ray burst interaction with dense interstellar medium
Abstract. Interaction of cosmological gamma ray burst radiation with the dense interstellar medium of host galaxy is considered. Gas dynamical motion of interstellar medium driven by gamma ray burst is investigated in 2D approximation for different initial density distributions of host galaxy matter and different total energy of gamma ray burst. The maximum velocity of motion of interstellar me...
متن کاملSwift Pointing and Gravitational-Wave Bursts from Gamma-Ray Burst Events
The currently accepted model for gamma-ray burst phenomena involves the violent formation of a rapidly rotating solar-mass black hole. Gravitational waves should be associated with the black-hole formation, and their detection would permit this model to be tested. Even upper limits on the gravitational-wave strength associated with gammaray bursts could constrain the gamma-ray burst model. This...
متن کاملWhen Do Ultra-relativistic Shocks Make Energetic Particle Populations?
It is claimed that ultra-relativistic, magnetized, electron-ion shocks are, for most magnetic geometries, poor accelerators of non-thermal particles. The phenomenon of “missing” early X-ray afterglow observed in many of the Swift gamma-ray burst (GRB) afterglow data may simply be due to this fact. Rapid time variability of the X-ray emission could be produced by fluctuations in the orientation ...
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تاریخ انتشار 2017