Can we quickly flag ultra-long gamma-ray bursts

B. Gendre, Q. T. Joyce, N. B. Orange, G. Stratta, J. L. Atteia, M. Boer

Research output: Contribution to journalArticle

Abstract

Ultra-long gamma-ray bursts are a class of high-energy transients lasting several hours. Their exact nature is still elusive, and severalmodels have been proposed to explain them. Because of the limited coverage of wide-field gamma-ray detectors, the study of their prompt phase with sensitive narrow-field X-ray instruments could help in understanding the origin of ultra-long GRBs.However, the observers face a true problem in rapidly activating follow-up observations, due to the challenging identification of an ultra-long GRB before the end of the prompt phase. We present here a comparison of the prompt properties available after a few tens of minutes of a sample of ultra-long GRBs and normal long GRBs, looking for prior indicators of the long duration.We find that there is no such clear prior indicator of the duration of the burst.We also found that statistically, a burst lasting at least 10 and 20 minutes has respectively 28 per cent and 50 per cent probability to be an ultralong event. These findings point towards a common central engine for normal long and ultra-long GRBs, with the collapsar model privileged.

Original languageEnglish
Pages (from-to)2471-2476
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Volume486
Issue number2
DOIs
Publication statusPublished - 1 Jun 2019

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Gendre, B., Joyce, Q. T., Orange, N. B., Stratta, G., Atteia, J. L., & Boer, M. (2019). Can we quickly flag ultra-long gamma-ray bursts. Monthly Notices of the Royal Astronomical Society, 486(2), 2471-2476. https://doi.org/10.1093/mnras/stz1036
Gendre, B. ; Joyce, Q. T. ; Orange, N. B. ; Stratta, G. ; Atteia, J. L. ; Boer, M. / Can we quickly flag ultra-long gamma-ray bursts. In: Monthly Notices of the Royal Astronomical Society. 2019 ; Vol. 486, No. 2. pp. 2471-2476.
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Gendre, B, Joyce, QT, Orange, NB, Stratta, G, Atteia, JL & Boer, M 2019, 'Can we quickly flag ultra-long gamma-ray bursts' Monthly Notices of the Royal Astronomical Society, vol. 486, no. 2, pp. 2471-2476. https://doi.org/10.1093/mnras/stz1036

Can we quickly flag ultra-long gamma-ray bursts. / Gendre, B.; Joyce, Q. T.; Orange, N. B.; Stratta, G.; Atteia, J. L.; Boer, M.

In: Monthly Notices of the Royal Astronomical Society, Vol. 486, No. 2, 01.06.2019, p. 2471-2476.

Research output: Contribution to journalArticle

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AU - Orange, N. B.

AU - Stratta, G.

AU - Atteia, J. L.

AU - Boer, M.

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