منابع مشابه
X-Ray Emission of Gamma-Ray Bursts
X-ray emission can provide a crucial diagnostic of gamma-ray bursts (GRBs). We calculate the X-ray and gamma-ray spectra of impulsive acceleration episodes related to GRB pulses. We use the synchrotron shock model (SSM) as a basis of our calculations. We show that the current data on soft-to-hard emission ratios of GRB pulse emission are in agreement with the SSM. In particular, GRB pulse emiss...
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We discuss the use of one-nucleon removal reactions of loosely bound nuclei at intermediate energies as an indirect method in nuclear astrophysics. The breakup reactions are proved to be good spectroscopic tools and can be used to study a large number of loosely bound protonor neutron-rich nuclei over a wide range of beam energies. As peripheral processes, they can be used to extract asymptotic...
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γ−ray bursts (GRBs) are likely sources of ultra-high energy, > 1019 eV, protons and high energy, > 1 TeV, neutrinos. Large volume detectors of ultra high energy cosmic rays (UHECRs) and high energy neutrinos, which are already operating and are being expanded, may allow to test in the coming few years the predictions of the GRB model for high energy proton and neutrino production. Detection of ...
متن کاملAfterglow Emission from Naked Gamma-ray Bursts
We calculate the afterglow emission for Gamma-Ray Bursts (GRBs) going off in an extremely low density medium, referred to as naked bursts. Our results also apply to the case where the external medium density falls off sharply at some distance from the burst. The observed afterglow flux in this case originates at high latitudes, i.e. where the angle between the fluid velocity and the observer li...
متن کامل“late Prompt” Emission in Gamma Ray Bursts?
The flat decay phase in the first 10–10 seconds of the X–ray light curve of Gamma Ray Bursts (GRBs) has not yet found a convincing explanation. The fact that the optical and X–ray lightcurves are often different, with breaks at different times, makes contrived any explanation based on the same origin for both the X–ray and optical fluxes. We here assume that the central engine can be active for...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1997
ISSN: 0004-637X,1538-4357
DOI: 10.1086/303969