The swift discovery of X-ray afterglows accompanying short bursts from SGR 1900+14

Y. E. Nakagawa, T. Sakamoto, G. Sato, N. Gehrels, K. Hurley, D. M. Palmer

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The discovery of X-ray afterglows accompanying two short bursts from SGR 1900+14 is presented. The afterglow luminosities at the end of each observation are lower by 30%-50% than their initial luminosities, and decay with power-law indices p ∼ 0.2-0.4. Their initial bolometric luminosities are L ∼ 1034-1035 erg s-1. We discuss analogies and differences between the X-ray afterglows of SGR short bursts and short gamma-ray bursts.

Original languageEnglish
JournalAstrophysical Journal
Volume681
Issue number2 PART 2
DOIs
Publication statusPublished - 2008

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afterglows
bursts
luminosity
x rays
gamma ray bursts
erg
power law
decay

Keywords

  • Stars: Neutron

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Nakagawa, Y. E., Sakamoto, T., Sato, G., Gehrels, N., Hurley, K., & Palmer, D. M. (2008). The swift discovery of X-ray afterglows accompanying short bursts from SGR 1900+14. Astrophysical Journal, 681(2 PART 2). https://doi.org/10.1086/590428

The swift discovery of X-ray afterglows accompanying short bursts from SGR 1900+14. / Nakagawa, Y. E.; Sakamoto, T.; Sato, G.; Gehrels, N.; Hurley, K.; Palmer, D. M.

In: Astrophysical Journal, Vol. 681, No. 2 PART 2, 2008.

Research output: Contribution to journalArticle

Nakagawa, YE, Sakamoto, T, Sato, G, Gehrels, N, Hurley, K & Palmer, DM 2008, 'The swift discovery of X-ray afterglows accompanying short bursts from SGR 1900+14', Astrophysical Journal, vol. 681, no. 2 PART 2. https://doi.org/10.1086/590428
Nakagawa YE, Sakamoto T, Sato G, Gehrels N, Hurley K, Palmer DM. The swift discovery of X-ray afterglows accompanying short bursts from SGR 1900+14. Astrophysical Journal. 2008;681(2 PART 2). https://doi.org/10.1086/590428
Nakagawa, Y. E. ; Sakamoto, T. ; Sato, G. ; Gehrels, N. ; Hurley, K. ; Palmer, D. M. / The swift discovery of X-ray afterglows accompanying short bursts from SGR 1900+14. In: Astrophysical Journal. 2008 ; Vol. 681, No. 2 PART 2.
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