Record Details
Photospheric emission from long duration gamma-ray bursts powered by variable engines
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Photospheric emission from long duration gamma-ray bursts powered by variable engines |
| Names |
López-Cámara, Diego
(creator) Morsony, Brian J. (creator) Lazzati, Davide (creator) |
| Date Issued | 2014-08-11 (iso8601) |
| Note | This is an author's peer-reviewed final manuscript, as accepted by the publisher. This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by Oxford University Press on behalf of the Royal Astronomical Society. The published article can be found at: http://mnras.oxfordjournals.org/. |
| Abstract | We present the results of a set of numerical simulations of long-duration gamma-ray burst jets aimed at studying the effect of a variable engine on the peak frequency of the photospheric emission. Our simulations follow the propagation of the jet inside the progenitor star, its break-out, and the subsequent expansion in the environment out to the photospheric radius. A constant and two step-function models are considered for the engine luminosity. We show that our synthetic light-curves follow a luminosity-peak frequency correlation analogous to the Golenetskii correlation found in long-duration gamma-ray burst observations. Within the parameter space explored, it appears that the central engine luminosity profile does not have a significant effect on the location of a gamma-ray burst in the Luminosity-peak frequency plane, bursts from different central engines being indistinguishable from each other. |
| Genre | Article |
| Topic | hydrodynamics |
| Identifier | López-Cámara, D., Morsony, B. J., & Lazzati, D. (2014). Photospheric emission from long-duration gamma-ray bursts powered by variable engines. Monthly Notices of the Royal Astronomical Society, 442(3), 2202-2207. doi:10.1093/mnras/stu1016 |
