Abstract
We consider the temporal behaviour and spectra of early X-ray afterglows of Gamma-Ray Bursts (GRBs) and identify peculiarities imprinted by dynamcal processes in GRB shocks. It is shown that the bolometric lightcurve may deviate from monotonous decline when the late-time energy injection takes place via a secondary shock. The latter is formed by a neutron component of outflow, which is present in any stellar-type GRB model and carry as much energy as the proton component. Kinetic processes in the emitting region give rise to a break in the spectrum of X-ray emission of synchrotron origin related to a break in the electron distribution function, which appears due to transition from synchrotron cooling (for the most energetic electrons) to Compton cooling (for less energetic ones). The new generation of X-ray missions with greatly enhanced sensitivity offers a breakthrough in understanding of dynamics of early GRB afterglows.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
