| Issue |
A&A
Volume 531, July 2011
|
|
|---|---|---|
| Article Number | A76 | |
| Number of page(s) | 10 | |
| Section | Astrophysical processes | |
| DOI | https://doi.org/10.1051/0004-6361/201016088 | |
| Published online | 15 June 2011 | |
Effects of a low electron distribution cutoff on multiwavelength spectra and light curves of GRB afterglows
1
Department of Physics, University of Athens, Panepistimiopolis, 15783 Zografos, Greece
e-mail: maroulaaki@gmail.com
2
The Racah Institute of Physics, The Hebrew University, Jerusalem, Israel
Received: 6 November 2010
Accepted: 29 April 2011
Aims. We investigate the behavior of the frequency-centered light curves expected within the standard model of gamma ray bursts, allowing the maximum electron energy (γmax) to be a free parameter that may take low values.
Methods. We solve the spatially averaged kinetic equations that describe the simultaneous evolution of particles and photons, obtaining the multi-wavelength spectra as a function of time. From these we construct the frequency-centered light curves with an emphasis on the X-ray and optical bands.
Results. We show that in cases where γmax takes low values, the produced X-ray light curves show a plateau as the synchrotron component gives its place to the synchrotron self-Compton one in the X-ray band.
Key words: gamma-rays: general / acceleration of particles / radiation mechanisms: non-thermal
© ESO, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.