The first swift X-ray flash: The faint afterglow of XRF 050215B

A. J. Levan; J. P. Osborne; N. R. Tanvir; K. L. Page; E. Rol; B. Zhang; M. R. Goad; P. T. O'Brien; R. S. Priddey; D. Bersier; D. N. Burrows; R. Chapman; A. S. Fruchter; P. Giommi; N. Gehrels; M. A. Hughes; S. Pak; C. Simpson; G. Tagliaferri; E. Vardoulaki

doi:10.1086/506018

The first swift X-ray flash: The faint afterglow of XRF 050215B

A. J. Levan, J. P. Osborne, N. R. Tanvir, K. L. Page, E. Rol, B. Zhang, M. R. Goad, P. T. O'Brien, R. S. Priddey, D. Bersier, D. N. Burrows, R. Chapman, A. S. Fruchter, P. Giommi, N. Gehrels, M. A. Hughes, S. Pak, C. Simpson, G. Tagliaferri, E. Vardoulaki

Astronomy & Astrophysics

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Abstract

We present the discovery of XRF 050215B and its afterglow. The burst was detected by the Swift BAT during the check-out phase, and observations with the X-Ray Telescope began approximately 30 minutes after the burst. These observations found a faint, slowly fading X-ray afterglow near the center of the error box as reported by the BAT. Infrared data obtained at UKIRT after 10 hr also revealed a very faint K-band afterglow. The afterglow appears unusual since it is very faint, especially in the infrared, with K > 20 only 9 hr postburst. The X-ray and infrared light curves exhibit a slow, monotonic decay with α ∼ 0.8 and no evidence for a steepening associated with the jet break to 10 days postburst. We discuss possible explanations for the faintness and slow decay in the context of present models for the production of X-ray flashes.

Original language	English (US)
Pages (from-to)	1132-1138
Number of pages	7
Journal	Astrophysical Journal
Volume	648
Issue number	2 I
DOIs	https://doi.org/10.1086/506018
State	Published - Sep 10 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/506018

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Levan, A. J., Osborne, J. P., Tanvir, N. R., Page, K. L., Rol, E., Zhang, B., Goad, M. R., O'Brien, P. T., Priddey, R. S., Bersier, D., Burrows, D. N., Chapman, R., Fruchter, A. S., Giommi, P., Gehrels, N., Hughes, M. A., Pak, S., Simpson, C., Tagliaferri, G., & Vardoulaki, E. (2006). The first swift X-ray flash: The faint afterglow of XRF 050215B. Astrophysical Journal, 648(2 I), 1132-1138. https://doi.org/10.1086/506018

@article{b1bc6e3d52f54ff9ab5445cc58c32fd8,

title = "The first swift X-ray flash: The faint afterglow of XRF 050215B",

abstract = "We present the discovery of XRF 050215B and its afterglow. The burst was detected by the Swift BAT during the check-out phase, and observations with the X-Ray Telescope began approximately 30 minutes after the burst. These observations found a faint, slowly fading X-ray afterglow near the center of the error box as reported by the BAT. Infrared data obtained at UKIRT after 10 hr also revealed a very faint K-band afterglow. The afterglow appears unusual since it is very faint, especially in the infrared, with K > 20 only 9 hr postburst. The X-ray and infrared light curves exhibit a slow, monotonic decay with α ∼ 0.8 and no evidence for a steepening associated with the jet break to 10 days postburst. We discuss possible explanations for the faintness and slow decay in the context of present models for the production of X-ray flashes.",

author = "Levan, {A. J.} and Osborne, {J. P.} and Tanvir, {N. R.} and Page, {K. L.} and E. Rol and B. Zhang and Goad, {M. R.} and O'Brien, {P. T.} and Priddey, {R. S.} and D. Bersier and Burrows, {D. N.} and R. Chapman and Fruchter, {A. S.} and P. Giommi and N. Gehrels and Hughes, {M. A.} and S. Pak and C. Simpson and G. Tagliaferri and E. Vardoulaki",

year = "2006",

month = sep,

day = "10",

doi = "10.1086/506018",

language = "English (US)",

volume = "648",

pages = "1132--1138",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2 I",

}

Levan, AJ, Osborne, JP, Tanvir, NR, Page, KL, Rol, E, Zhang, B, Goad, MR, O'Brien, PT, Priddey, RS, Bersier, D, Burrows, DN, Chapman, R, Fruchter, AS, Giommi, P, Gehrels, N, Hughes, MA, Pak, S, Simpson, C, Tagliaferri, G & Vardoulaki, E 2006, 'The first swift X-ray flash: The faint afterglow of XRF 050215B', Astrophysical Journal, vol. 648, no. 2 I, pp. 1132-1138. https://doi.org/10.1086/506018

TY - JOUR

T1 - The first swift X-ray flash

T2 - The faint afterglow of XRF 050215B

AU - Levan, A. J.

AU - Osborne, J. P.

AU - Tanvir, N. R.

AU - Page, K. L.

AU - Rol, E.

AU - Zhang, B.

AU - Goad, M. R.

AU - O'Brien, P. T.

AU - Priddey, R. S.

AU - Bersier, D.

AU - Burrows, D. N.

AU - Chapman, R.

AU - Fruchter, A. S.

AU - Giommi, P.

AU - Gehrels, N.

AU - Hughes, M. A.

AU - Pak, S.

AU - Simpson, C.

AU - Tagliaferri, G.

AU - Vardoulaki, E.

PY - 2006/9/10

Y1 - 2006/9/10

N2 - We present the discovery of XRF 050215B and its afterglow. The burst was detected by the Swift BAT during the check-out phase, and observations with the X-Ray Telescope began approximately 30 minutes after the burst. These observations found a faint, slowly fading X-ray afterglow near the center of the error box as reported by the BAT. Infrared data obtained at UKIRT after 10 hr also revealed a very faint K-band afterglow. The afterglow appears unusual since it is very faint, especially in the infrared, with K > 20 only 9 hr postburst. The X-ray and infrared light curves exhibit a slow, monotonic decay with α ∼ 0.8 and no evidence for a steepening associated with the jet break to 10 days postburst. We discuss possible explanations for the faintness and slow decay in the context of present models for the production of X-ray flashes.

AB - We present the discovery of XRF 050215B and its afterglow. The burst was detected by the Swift BAT during the check-out phase, and observations with the X-Ray Telescope began approximately 30 minutes after the burst. These observations found a faint, slowly fading X-ray afterglow near the center of the error box as reported by the BAT. Infrared data obtained at UKIRT after 10 hr also revealed a very faint K-band afterglow. The afterglow appears unusual since it is very faint, especially in the infrared, with K > 20 only 9 hr postburst. The X-ray and infrared light curves exhibit a slow, monotonic decay with α ∼ 0.8 and no evidence for a steepening associated with the jet break to 10 days postburst. We discuss possible explanations for the faintness and slow decay in the context of present models for the production of X-ray flashes.

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DO - 10.1086/506018

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SP - 1132

EP - 1138

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 I

ER -

The first swift X-ray flash: The faint afterglow of XRF 050215B

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