The unusual X-ray light curve of GRB 080307: The onset of the afterglow?

K. L. Page, R. Willingale, P. T. O'Brien, N. R. Tanvir, J. P. Osborne, B. Zhang, S. T. Holland, A. J. Levan, A. Melandri, R. L.C. Starling, D. Bersier, David Nelson Burrows, J. E. Geach, P. Maxted

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Swift-detected GRB 080307 showed an unusual smooth rise in its X-ray light curve around 100 s after the burst, at the start of which the emission briefly softened. This 'hump' has a longer duration than is normal for a flare at early times and does not demonstrate a typical flare profile. Using a two-component power-law-to-exponential model, the rising emission can be modelled as the onset of the afterglow, something which is very rarely seen in Swift-X-ray light curves. We cannot, however, rule out that the hump is a particularly slow early-time flare, or that it is caused by upscattered reverse shock electrons.

Original languageEnglish (US)
Pages (from-to)328-334
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume395
Issue number1
DOIs
StatePublished - May 1 2009

Fingerprint

afterglows
flares
light curve
power law
x rays
electron
bursts
shock
profiles
electrons

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Page, K. L., Willingale, R., O'Brien, P. T., Tanvir, N. R., Osborne, J. P., Zhang, B., ... Maxted, P. (2009). The unusual X-ray light curve of GRB 080307: The onset of the afterglow? Monthly Notices of the Royal Astronomical Society, 395(1), 328-334. https://doi.org/10.1111/j.1365-2966.2009.14509.x
Page, K. L. ; Willingale, R. ; O'Brien, P. T. ; Tanvir, N. R. ; Osborne, J. P. ; Zhang, B. ; Holland, S. T. ; Levan, A. J. ; Melandri, A. ; Starling, R. L.C. ; Bersier, D. ; Burrows, David Nelson ; Geach, J. E. ; Maxted, P. / The unusual X-ray light curve of GRB 080307 : The onset of the afterglow?. In: Monthly Notices of the Royal Astronomical Society. 2009 ; Vol. 395, No. 1. pp. 328-334.
@article{8ad3358403414872b60b42c21b0001da,
title = "The unusual X-ray light curve of GRB 080307: The onset of the afterglow?",
abstract = "Swift-detected GRB 080307 showed an unusual smooth rise in its X-ray light curve around 100 s after the burst, at the start of which the emission briefly softened. This 'hump' has a longer duration than is normal for a flare at early times and does not demonstrate a typical flare profile. Using a two-component power-law-to-exponential model, the rising emission can be modelled as the onset of the afterglow, something which is very rarely seen in Swift-X-ray light curves. We cannot, however, rule out that the hump is a particularly slow early-time flare, or that it is caused by upscattered reverse shock electrons.",
author = "Page, {K. L.} and R. Willingale and O'Brien, {P. T.} and Tanvir, {N. R.} and Osborne, {J. P.} and B. Zhang and Holland, {S. T.} and Levan, {A. J.} and A. Melandri and Starling, {R. L.C.} and D. Bersier and Burrows, {David Nelson} and Geach, {J. E.} and P. Maxted",
year = "2009",
month = "5",
day = "1",
doi = "10.1111/j.1365-2966.2009.14509.x",
language = "English (US)",
volume = "395",
pages = "328--334",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",

}

Page, KL, Willingale, R, O'Brien, PT, Tanvir, NR, Osborne, JP, Zhang, B, Holland, ST, Levan, AJ, Melandri, A, Starling, RLC, Bersier, D, Burrows, DN, Geach, JE & Maxted, P 2009, 'The unusual X-ray light curve of GRB 080307: The onset of the afterglow?', Monthly Notices of the Royal Astronomical Society, vol. 395, no. 1, pp. 328-334. https://doi.org/10.1111/j.1365-2966.2009.14509.x

The unusual X-ray light curve of GRB 080307 : The onset of the afterglow? / Page, K. L.; Willingale, R.; O'Brien, P. T.; Tanvir, N. R.; Osborne, J. P.; Zhang, B.; Holland, S. T.; Levan, A. J.; Melandri, A.; Starling, R. L.C.; Bersier, D.; Burrows, David Nelson; Geach, J. E.; Maxted, P.

In: Monthly Notices of the Royal Astronomical Society, Vol. 395, No. 1, 01.05.2009, p. 328-334.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The unusual X-ray light curve of GRB 080307

T2 - The onset of the afterglow?

AU - Page, K. L.

AU - Willingale, R.

AU - O'Brien, P. T.

AU - Tanvir, N. R.

AU - Osborne, J. P.

AU - Zhang, B.

AU - Holland, S. T.

AU - Levan, A. J.

AU - Melandri, A.

AU - Starling, R. L.C.

AU - Bersier, D.

AU - Burrows, David Nelson

AU - Geach, J. E.

AU - Maxted, P.

PY - 2009/5/1

Y1 - 2009/5/1

N2 - Swift-detected GRB 080307 showed an unusual smooth rise in its X-ray light curve around 100 s after the burst, at the start of which the emission briefly softened. This 'hump' has a longer duration than is normal for a flare at early times and does not demonstrate a typical flare profile. Using a two-component power-law-to-exponential model, the rising emission can be modelled as the onset of the afterglow, something which is very rarely seen in Swift-X-ray light curves. We cannot, however, rule out that the hump is a particularly slow early-time flare, or that it is caused by upscattered reverse shock electrons.

AB - Swift-detected GRB 080307 showed an unusual smooth rise in its X-ray light curve around 100 s after the burst, at the start of which the emission briefly softened. This 'hump' has a longer duration than is normal for a flare at early times and does not demonstrate a typical flare profile. Using a two-component power-law-to-exponential model, the rising emission can be modelled as the onset of the afterglow, something which is very rarely seen in Swift-X-ray light curves. We cannot, however, rule out that the hump is a particularly slow early-time flare, or that it is caused by upscattered reverse shock electrons.

UR - http://www.scopus.com/inward/record.url?scp=64549117402&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=64549117402&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2966.2009.14509.x

DO - 10.1111/j.1365-2966.2009.14509.x

M3 - Article

AN - SCOPUS:64549117402

VL - 395

SP - 328

EP - 334

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -