HETE-2 observation of the evidence of a long acting engine in the extremely soft XRF 040916

Makoto Arimoto, Nobuyuki Kawai, Motoko Suzuki, Rie Sato, Nicolas Vasquez Pazmino, Takashi Shimokawabe, Takuto Ishimura, Yujin E. Nakagawa, Alexandre Pelangeon, Jean Luc Atteia, Kevin Hurley, Graziella Pizzichini, Donald Q. Lamb

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

Abstract

A long and extremely soft X-ray flash was detected and localized by the instruments aboard the HETE-2 at 00:03:30 UT on 2004 Sep. 16. This burst consists of two peaks separated by ∼200s, with durations of about 110 s and 60 s. We have analyzed the energy spectra of the 1st and 2nd peaks observed with the Wide Field X-Ray Monitor (WXM) and the French Gamma Telescope (FREGATE). We discuss the origin of the 2nd peak in terms of flux variabilities and timescales. We find that it is most likely part of the prompt emission, and is explained by the long-acting engine model.

Original languageEnglish
Title of host publicationGamma-Ray Bursts 2007 - Proceedings of the Santa Fe Conference
Pages331-334
Number of pages4
Volume1000
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventSanta Fe Conference on Gamma-Ray Bursts 2007, GRB 2007 - Santa Fe, NM
Duration: 2007 Nov 52007 Nov 9

Other

OtherSanta Fe Conference on Gamma-Ray Bursts 2007, GRB 2007
CitySanta Fe, NM
Period07/11/507/11/9

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Keywords

  • bursts-X-rays
  • gamma-rays
  • individual (XRF040916)

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Arimoto, M., Kawai, N., Suzuki, M., Sato, R., Pazmino, N. V., Shimokawabe, T., Ishimura, T., Nakagawa, Y. E., Pelangeon, A., Atteia, J. L., Hurley, K., Pizzichini, G., & Lamb, D. Q. (2008). HETE-2 observation of the evidence of a long acting engine in the extremely soft XRF 040916. In Gamma-Ray Bursts 2007 - Proceedings of the Santa Fe Conference (Vol. 1000, pp. 331-334) https://doi.org/10.1063/1.2943477