GRB 050826: A Subluminous Event at z=0.296 Finds Its Place in the Luminosity Distribution of Gamma-Ray Burst Afterglows
| dc.contributor.author | Mirabal, N. | |
| dc.contributor.author | Halpern, J. P. | |
| dc.contributor.author | O'Brien, P. T. | |
| dc.date.accessioned | 2020-09-08T15:41:38Z | |
| dc.date.available | 2020-09-08T15:41:38Z | |
| dc.date.issued | 2007-05-14 | |
| dc.description.abstract | We present the optical identification and spectroscopy of the host galaxy of GRB 050826 at redshift z = 0.296 ± 0.001. Image subtraction among observations obtained on three consecutive nights reveals a fading object 5 hr after the burst, confirming its identification as the optical afterglow of this event. Deep imaging shows that the optical afterglow is offset by 0.4'' (1.76 kpc) from the center of its irregular host galaxy, which is typical for long-duration gamma-ray bursts. Combining these results with X-ray measurements acquired by the Swift XRT instrument, we find that GRB 050826 falls entirely within the subluminous, subenergetic group of long gamma-ray bursts at low redshift (z <= 0.3). The results are discussed in the context of models that possibly account for this trend, including the nature of the central engine, the evolution of progenitor properties as a function of redshift, and incompleteness in current gamma-ray burst samples. | en_US |
| dc.description.sponsorship | This work was supported by Swift grant NNH05ZDA001N | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.1086/519006 | en_US |
| dc.format.extent | 5 pages | en_US |
| dc.genre | journal articles preprints | en_US |
| dc.identifier | doi:10.13016/m2ze7w-rwyy | |
| dc.identifier.citation | N. Mirabal,J. P. Halpern and P. T. O'Brien, GRB 050826: A Subluminous Event at z=0.296 Finds Its Place in the Luminosity Distribution of Gamma-Ray Burst Afterglows, ApJ 661 L127 (2007), DOI: https://doi.org/10.1086/519006 | en_US |
| dc.identifier.uri | https://doi.org/10.1086/519006 | |
| dc.identifier.uri | http://hdl.handle.net/11603/19600 | |
| 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 | © 2007. The American Astronomical Society. All rights reserved | |
| dc.title | GRB 050826: A Subluminous Event at z=0.296 Finds Its Place in the Luminosity Distribution of Gamma-Ray Burst Afterglows | en_US |
| dc.type | Text | en_US |