INTEGRAL and XMM-Newton observations of the weak gamma-ray burst GRB 030227

S. Mereghetti; D. Gotz; A. Tiengo; V. Beckmann; J. Borkowski; T.J.L. Courvoisier; A. von Kienlin; V. Schoenfelder; J.P. Roques; L. Bouchet; P. Ubertini; A. Castro-Tirado; F. Lebrun; Joachim Paul; Niels Lund; J.M. Mas-Hesse; W. Hermsen; P.R. den Hartog; C. Winkler

INTEGRAL and XMM-Newton observations of the weak gamma-ray burst GRB 030227

S. Mereghetti, D. Gotz, A. Tiengo, V. Beckmann, J. Borkowski, T.J.L. Courvoisier, A. von Kienlin, V. Schoenfelder, J.P. Roques, L. Bouchet, P. Ubertini, A. Castro-Tirado, F. Lebrun, Joachim Paul, Niels Lund, J.M. Mas-Hesse, W. Hermsen, P.R. den Hartog, C. Winkler

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Abstract

We present International Gamma-Ray Astrophysical Laboratory ( INTEGRAL) and XMM-Newton observations of the prompt gamma-ray emission and the X-ray afterglow of GRB 030227, the first gamma-ray burst for which the quick localization obtained with the INTEGRAL Burst Alert System has led to the discovery of X-ray and optical afterglows. GRB 030227 had a duration of about 20 s and a peak flux of similar to1.1 photons cm(-2) s(-1) in the 20-200 keV energy range. The time-averaged spectrum can be fitted by a single power law with photon index similar to2, and we find some evidence for a hard-to-soft spectral evolution. The X-ray afterglow has been detected starting only 8 hr after the prompt emission, with a 0.2-10 keV flux decreasing as t(-1) from 1.3 x 10(-12) to 5 x 10(-13) ergs cm(-2) s(-1). The afterglow spectrum is well described by a power law with photon index modified by a 1.94 +/- 0.05 redshifted neutral absorber with column density of several 10(22) cm(-2). A possible emission line at 1.67 keV could be due to Fe for a redshift z similar to 3, consistent with the value inferred from the absorption.

Original language	English
Journal	Astrophysical Journal
Volume	590
Issue number	2
Pages (from-to)	L73-L77
ISSN	0004-637X
Publication status	Published - 2003

Keywords

gamma rays : bursts
X-rays : general

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Mereghetti, S., Gotz, D., Tiengo, A., Beckmann, V., Borkowski, J., Courvoisier, T. J. L., von Kienlin, A., Schoenfelder, V., Roques, J. P., Bouchet, L., Ubertini, P., Castro-Tirado, A., Lebrun, F., Paul, J., Lund, N., Mas-Hesse, J. M., Hermsen, W., den Hartog, P. R., & Winkler, C. (2003). INTEGRAL and XMM-Newton observations of the weak gamma-ray burst GRB 030227. Astrophysical Journal, 590(2), L73-L77.

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title = "INTEGRAL and XMM-Newton observations of the weak gamma-ray burst GRB 030227",

abstract = "We present International Gamma-Ray Astrophysical Laboratory ( INTEGRAL) and XMM-Newton observations of the prompt gamma-ray emission and the X-ray afterglow of GRB 030227, the first gamma-ray burst for which the quick localization obtained with the INTEGRAL Burst Alert System has led to the discovery of X-ray and optical afterglows. GRB 030227 had a duration of about 20 s and a peak flux of similar to1.1 photons cm(-2) s(-1) in the 20-200 keV energy range. The time-averaged spectrum can be fitted by a single power law with photon index similar to2, and we find some evidence for a hard-to-soft spectral evolution. The X-ray afterglow has been detected starting only 8 hr after the prompt emission, with a 0.2-10 keV flux decreasing as t(-1) from 1.3 x 10(-12) to 5 x 10(-13) ergs cm(-2) s(-1). The afterglow spectrum is well described by a power law with photon index modified by a 1.94 +/- 0.05 redshifted neutral absorber with column density of several 10(22) cm(-2). A possible emission line at 1.67 keV could be due to Fe for a redshift z similar to 3, consistent with the value inferred from the absorption.",

keywords = "gamma rays : bursts, X-rays : general",

author = "S. Mereghetti and D. Gotz and A. Tiengo and V. Beckmann and J. Borkowski and T.J.L. Courvoisier and {von Kienlin}, A. and V. Schoenfelder and J.P. Roques and L. Bouchet and P. Ubertini and A. Castro-Tirado and F. Lebrun and Joachim Paul and Niels Lund and J.M. Mas-Hesse and W. Hermsen and {den Hartog}, P.R. and C. Winkler",

year = "2003",

language = "English",

volume = "590",

pages = "L73--L77",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

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Mereghetti, S, Gotz, D, Tiengo, A, Beckmann, V, Borkowski, J, Courvoisier, TJL, von Kienlin, A, Schoenfelder, V, Roques, JP, Bouchet, L, Ubertini, P, Castro-Tirado, A, Lebrun, F, Paul, J, Lund, N, Mas-Hesse, JM, Hermsen, W, den Hartog, PR & Winkler, C 2003, 'INTEGRAL and XMM-Newton observations of the weak gamma-ray burst GRB 030227', Astrophysical Journal, vol. 590, no. 2, pp. L73-L77.

TY - JOUR

T1 - INTEGRAL and XMM-Newton observations of the weak gamma-ray burst GRB 030227

AU - Mereghetti, S.

AU - Gotz, D.

AU - Tiengo, A.

AU - Beckmann, V.

AU - Borkowski, J.

AU - Courvoisier, T.J.L.

AU - von Kienlin, A.

AU - Schoenfelder, V.

AU - Roques, J.P.

AU - Bouchet, L.

AU - Ubertini, P.

AU - Castro-Tirado, A.

AU - Lebrun, F.

AU - Paul, Joachim

AU - Lund, Niels

AU - Mas-Hesse, J.M.

AU - Hermsen, W.

AU - den Hartog, P.R.

AU - Winkler, C.

PY - 2003

Y1 - 2003

N2 - We present International Gamma-Ray Astrophysical Laboratory ( INTEGRAL) and XMM-Newton observations of the prompt gamma-ray emission and the X-ray afterglow of GRB 030227, the first gamma-ray burst for which the quick localization obtained with the INTEGRAL Burst Alert System has led to the discovery of X-ray and optical afterglows. GRB 030227 had a duration of about 20 s and a peak flux of similar to1.1 photons cm(-2) s(-1) in the 20-200 keV energy range. The time-averaged spectrum can be fitted by a single power law with photon index similar to2, and we find some evidence for a hard-to-soft spectral evolution. The X-ray afterglow has been detected starting only 8 hr after the prompt emission, with a 0.2-10 keV flux decreasing as t(-1) from 1.3 x 10(-12) to 5 x 10(-13) ergs cm(-2) s(-1). The afterglow spectrum is well described by a power law with photon index modified by a 1.94 +/- 0.05 redshifted neutral absorber with column density of several 10(22) cm(-2). A possible emission line at 1.67 keV could be due to Fe for a redshift z similar to 3, consistent with the value inferred from the absorption.

AB - We present International Gamma-Ray Astrophysical Laboratory ( INTEGRAL) and XMM-Newton observations of the prompt gamma-ray emission and the X-ray afterglow of GRB 030227, the first gamma-ray burst for which the quick localization obtained with the INTEGRAL Burst Alert System has led to the discovery of X-ray and optical afterglows. GRB 030227 had a duration of about 20 s and a peak flux of similar to1.1 photons cm(-2) s(-1) in the 20-200 keV energy range. The time-averaged spectrum can be fitted by a single power law with photon index similar to2, and we find some evidence for a hard-to-soft spectral evolution. The X-ray afterglow has been detected starting only 8 hr after the prompt emission, with a 0.2-10 keV flux decreasing as t(-1) from 1.3 x 10(-12) to 5 x 10(-13) ergs cm(-2) s(-1). The afterglow spectrum is well described by a power law with photon index modified by a 1.94 +/- 0.05 redshifted neutral absorber with column density of several 10(22) cm(-2). A possible emission line at 1.67 keV could be due to Fe for a redshift z similar to 3, consistent with the value inferred from the absorption.

KW - gamma rays : bursts

KW - X-rays : general

M3 - Journal article

SN - 0004-637X

VL - 590

SP - L73-L77

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

INTEGRAL and XMM-Newton observations of the weak gamma-ray burst GRB 030227

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Keywords

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