Echo Emission from Dust Scattering and X-Ray Afterglows of Gamma-Ray Bursts
| dc.contributor.author | Shao, L. | |
| dc.contributor.author | Dai, Z. G. | |
| dc.contributor.author | Mirabal, Nestor | |
| dc.date.accessioned | 2020-09-04T18:23:37Z | |
| dc.date.available | 2020-09-04T18:23:37Z | |
| dc.date.issued | 2007-11-23 | |
| dc.description.abstract | We investigate the effect of X-ray echo emission in gamma-ray bursts (GRBs). We find that the echo emission can provide an alternative way of understanding X-ray shallow decays and jet breaks. In particular, a shallow decay followed by a "normal" decay and a further rapid decay of X-ray afterglows can together be explained as being due to the echo from prompt X-ray emission scattered by dust grains in a massive wind bubble around a GRB progenitor. We also introduce an extra temporal break in the X-ray echo emission. By fitting the afterglow light curves, we can measure the locations of the massive wind bubbles, which will bring us closer to finding the mass-loss rate, wind velocity, and age of the progenitors prior to the GRB explosions. | en_US |
| dc.description.sponsorship | Thanks to the Swift satellite (Gehrels et al. 2004), our interpretation of GRBs has become more complex. The feature of a shallow decay followed by a “normal” decay and a further rapid decay of X-ray afterglows appears to be canonical (Zhang et al. 2006; Nousek et al.2006). Coincidentally, we find that this feature can be naturally reproduced by the echo emission. | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.1086/527047 | en_US |
| dc.format.extent | 25 pages | en_US |
| dc.genre | journal articles preprints | en_US |
| dc.identifier | doi:10.13016/m2naq5-pkpy | |
| dc.identifier.citation | L. Shao, Z. G. Dai and N. Mirabal, Echo Emission from Dust Scattering and X-Ray Afterglows of Gamma-Ray Bursts, ApJ 675 507 (2008), doi: https://doi.org/10.1086/527047 | en_US |
| dc.identifier.uri | https://doi.org/10.1086/527047 | |
| dc.identifier.uri | http://hdl.handle.net/11603/19596 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | IOP | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.relation.ispartof | UMBC Joint Center for Earth Systems Technology (JCET) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II) | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | © 2008. The American Astronomical Society. All rights reserved. | |
| dc.title | Echo Emission from Dust Scattering and X-Ray Afterglows of Gamma-Ray Bursts | en_US |
| dc.type | Text | en_US |