Jet breakouts and photospheric emissions in rotating collapsing massive stars

Hiroki Nagakura, Hirotaka Ito, Kenta Kiuchi, Shoichi Yamada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We numerically investigated the gravitational collapse of a rapidly rotating massive star and the subsequent propagation of relativistic jets, varying the timing of jet injection. In this study, we pay particular attention to observational consequences of the difference in the timing of jet injection. In order to discuss them, the light curve of photospheric emissions is also calculated by the post process. In calculating optical depths to find the location of the photosphere, we take into account the relativistic effect such as the time retardation accurately. We find that, as a consequence of rotating massive star collapse, the centrifugal shock wave (CSW) is formed, then it propagates outwards and breaks out of the envelope into the stellar wind. Which of the jet and CSW breaks out earlier depends on the timing of jet injection. If the CSW breakout occurs first owing to later jet injection, the jet propagation and subsequent photospheric emissions are affected substantially.

Original languageEnglish
Title of host publicationGamma Ray Bursts 2010, GRB 2010
Pages334-337
Number of pages4
DOIs
Publication statusPublished - 2011 Sep 12
EventGamma Ray Bursts 2010, GRB 2010 - Annapolis, MD, United States
Duration: 2010 Nov 12010 Nov 4

Publication series

NameAIP Conference Proceedings
Volume1358
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceGamma Ray Bursts 2010, GRB 2010
CountryUnited States
CityAnnapolis, MD
Period10/11/110/11/4

Keywords

  • Gamma-ray burst

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Nagakura, H., Ito, H., Kiuchi, K., & Yamada, S. (2011). Jet breakouts and photospheric emissions in rotating collapsing massive stars. In Gamma Ray Bursts 2010, GRB 2010 (pp. 334-337). (AIP Conference Proceedings; Vol. 1358). https://doi.org/10.1063/1.3621800