On the nature of the short-duration GRB 050906
We present deep optical and infrared (IR) observations of the short-duration GRB 050906. Although no X-ray or optical/IR afterglow was discovered to deep limits, the error circle of the gamma-ray burst (GRB) (as derived from the Swift Burst Alert Telescope, or BAT) is unusual in containing the relat...
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2008
|
| _version_ | 1797066920713781248 |
|---|---|
| author | Levan, A Tanvir, N Jakobsson, P Chapman, R Hjorth, J Priddey, R Fynbo, J Hurley, K Jensen, B Johnson, R Gorosabel, J Castro-Tirado, A Jarvis, M Watson, D Wiersema, K |
| author_facet | Levan, A Tanvir, N Jakobsson, P Chapman, R Hjorth, J Priddey, R Fynbo, J Hurley, K Jensen, B Johnson, R Gorosabel, J Castro-Tirado, A Jarvis, M Watson, D Wiersema, K |
| author_sort | Levan, A |
| collection | OXFORD |
| description | We present deep optical and infrared (IR) observations of the short-duration GRB 050906. Although no X-ray or optical/IR afterglow was discovered to deep limits, the error circle of the gamma-ray burst (GRB) (as derived from the Swift Burst Alert Telescope, or BAT) is unusual in containing the relatively local starburst galaxy IC328. This makes GRB 050906 a candidate burst from a soft gamma-ray repeater (SGR), similar to the giant flare from SGR 1806-20. The probability of chance alignment of a given BAT position with such a galaxy is small (≲1 per cent), although the size of the error circle (2.6 arcmin radius) is such that a higher z origin cannot be ruled out. Indeed, the error circle also includes a moderately rich galaxy cluster at z = 0.43, which is a plausible location for the burst given the apparent preference that short-duration GRBs have for regions of high mass density. No residual optical or IR emission has been observed, in the form of either an afterglow or a later time emission from any associated supernova-like event. We discuss the constraints these limits place on the progenitor of GRB 050906 based on the expected optical signatures from both SGRs and merging compact object systems. © 2008 RAS. |
| first_indexed | 2024-03-06T21:48:55Z |
| format | Journal article |
| id | oxford-uuid:4a93eb80-6226-483b-9b03-687b9789a7de |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:48:55Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:4a93eb80-6226-483b-9b03-687b9789a7de2022-03-26T15:38:20ZOn the nature of the short-duration GRB 050906Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4a93eb80-6226-483b-9b03-687b9789a7deEnglishSymplectic Elements at Oxford2008Levan, ATanvir, NJakobsson, PChapman, RHjorth, JPriddey, RFynbo, JHurley, KJensen, BJohnson, RGorosabel, JCastro-Tirado, AJarvis, MWatson, DWiersema, KWe present deep optical and infrared (IR) observations of the short-duration GRB 050906. Although no X-ray or optical/IR afterglow was discovered to deep limits, the error circle of the gamma-ray burst (GRB) (as derived from the Swift Burst Alert Telescope, or BAT) is unusual in containing the relatively local starburst galaxy IC328. This makes GRB 050906 a candidate burst from a soft gamma-ray repeater (SGR), similar to the giant flare from SGR 1806-20. The probability of chance alignment of a given BAT position with such a galaxy is small (≲1 per cent), although the size of the error circle (2.6 arcmin radius) is such that a higher z origin cannot be ruled out. Indeed, the error circle also includes a moderately rich galaxy cluster at z = 0.43, which is a plausible location for the burst given the apparent preference that short-duration GRBs have for regions of high mass density. No residual optical or IR emission has been observed, in the form of either an afterglow or a later time emission from any associated supernova-like event. We discuss the constraints these limits place on the progenitor of GRB 050906 based on the expected optical signatures from both SGRs and merging compact object systems. © 2008 RAS. |
| spellingShingle | Levan, A Tanvir, N Jakobsson, P Chapman, R Hjorth, J Priddey, R Fynbo, J Hurley, K Jensen, B Johnson, R Gorosabel, J Castro-Tirado, A Jarvis, M Watson, D Wiersema, K On the nature of the short-duration GRB 050906 |
| title | On the nature of the short-duration GRB 050906 |
| title_full | On the nature of the short-duration GRB 050906 |
| title_fullStr | On the nature of the short-duration GRB 050906 |
| title_full_unstemmed | On the nature of the short-duration GRB 050906 |
| title_short | On the nature of the short-duration GRB 050906 |
| title_sort | on the nature of the short duration grb 050906 |
| work_keys_str_mv | AT levana onthenatureoftheshortdurationgrb050906 AT tanvirn onthenatureoftheshortdurationgrb050906 AT jakobssonp onthenatureoftheshortdurationgrb050906 AT chapmanr onthenatureoftheshortdurationgrb050906 AT hjorthj onthenatureoftheshortdurationgrb050906 AT priddeyr onthenatureoftheshortdurationgrb050906 AT fynboj onthenatureoftheshortdurationgrb050906 AT hurleyk onthenatureoftheshortdurationgrb050906 AT jensenb onthenatureoftheshortdurationgrb050906 AT johnsonr onthenatureoftheshortdurationgrb050906 AT gorosabelj onthenatureoftheshortdurationgrb050906 AT castrotiradoa onthenatureoftheshortdurationgrb050906 AT jarvism onthenatureoftheshortdurationgrb050906 AT watsond onthenatureoftheshortdurationgrb050906 AT wiersemak onthenatureoftheshortdurationgrb050906 |