Two years of INTEGRAL monitoring of the soft gamma-ray repeater SGR 1806-20: from quiescence to frenzy

D. Gotz; S. Mereghetti; S. Molkov; K. Hurley; I.F. Mirabel; R. Sunyaev; G. Weidenspointner; Søren Kristian Brandt; M. Del Santo; M. Feroci; E. Gogus; A. von Kienlin; M. van der Klis; C. Kouveliotou; Niels Lund; G. Pizzichini; P. Ubertini; C. Winkler; P.M. Woods

doi:10.1051/0004-6361:20053648

Two years of INTEGRAL monitoring of the soft gamma-ray repeater SGR 1806-20: from quiescence to frenzy

D. Gotz
, S. Mereghetti
, S. Molkov
, K. Hurley
, I.F. Mirabel
, R. Sunyaev
, G. Weidenspointner
, Søren Kristian Brandt
, M. Del Santo
, M. Feroci
, E. Gogus
, A. von Kienlin
, M. van der Klis
, C. Kouveliotou
, Niels Lund
, G. Pizzichini
, P. Ubertini
, C. Winkler
, P.M. Woods

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

SGR 1806-20 has been observed for more than 2 years with the INTEGRAL satellite. In this period the source went from a quiescent state into a very active one culminating in a giant flare on December 27, 2004. Here we report on the properties of all the short bursts detected with INTEGRAL before the giant flare. We derive their number-intensity distribution and confirm the hardness-intensity correlation for the bursts found by Gotz et al. (2004a, A&A, 417, L45). Our sample includes a very bright outburst that occurred on October 5, 2004, during which over one hundred bursts were emitted in 10 minutes, involving an energy release of 3 x 1042 erg. We present a detailed analysis of it and discuss our results in the framework of the magnetar model.

Original language	English
Journal	Astronomy and Astrophysics
Volume	445
Issue number	1
Pages (from-to)	313-321
ISSN	0004-6361
DOIs	https://doi.org/10.1051/0004-6361:20053648
Publication status	Published - 2006

Keywords

gamma rays : bursts
stars : pulsars : general
stars : pulsars : individual : SGR 1806-20
gamma rays : observations

Access to Document

10.1051/0004-6361:20053648

OpenUrl availability

Check availability in DTU Findit

Cite this

Gotz, D., Mereghetti, S., Molkov, S., Hurley, K., Mirabel, I. F., Sunyaev, R., Weidenspointner, G., Brandt, S. K., Del Santo, M., Feroci, M., Gogus, E., von Kienlin, A., van der Klis, M., Kouveliotou, C., Lund, N., Pizzichini, G., Ubertini, P., Winkler, C., & Woods, P. M. (2006). Two years of INTEGRAL monitoring of the soft gamma-ray repeater SGR 1806-20: from quiescence to frenzy. Astronomy and Astrophysics, 445(1), 313-321. https://doi.org/10.1051/0004-6361:20053648

@article{2066199e542e417495c2c0cc38c4ffec,

title = "Two years of INTEGRAL monitoring of the soft gamma-ray repeater SGR 1806-20: from quiescence to frenzy",

abstract = "SGR 1806-20 has been observed for more than 2 years with the INTEGRAL satellite. In this period the source went from a quiescent state into a very active one culminating in a giant flare on December 27, 2004. Here we report on the properties of all the short bursts detected with INTEGRAL before the giant flare. We derive their number-intensity distribution and confirm the hardness-intensity correlation for the bursts found by Gotz et al. (2004a, A\&A, 417, L45). Our sample includes a very bright outburst that occurred on October 5, 2004, during which over one hundred bursts were emitted in 10 minutes, involving an energy release of 3 x 1042 erg. We present a detailed analysis of it and discuss our results in the framework of the magnetar model.",

keywords = "gamma rays : bursts, stars : pulsars : general, stars : pulsars : individual : SGR 1806-20, gamma rays : observations",

author = "D. Gotz and S. Mereghetti and S. Molkov and K. Hurley and I.F. Mirabel and R. Sunyaev and G. Weidenspointner and Brandt, \{S{\o}ren Kristian\} and \{Del Santo\}, M. and M. Feroci and E. Gogus and \{von Kienlin\}, A. and \{van der Klis\}, M. and C. Kouveliotou and Niels Lund and G. Pizzichini and P. Ubertini and C. Winkler and P.M. Woods",

year = "2006",

doi = "10.1051/0004-6361:20053648",

language = "English",

volume = "445",

pages = "313--321",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "1",

}

Gotz, D, Mereghetti, S, Molkov, S, Hurley, K, Mirabel, IF, Sunyaev, R, Weidenspointner, G, Brandt, SK, Del Santo, M, Feroci, M, Gogus, E, von Kienlin, A, van der Klis, M, Kouveliotou, C, Lund, N, Pizzichini, G, Ubertini, P, Winkler, C & Woods, PM 2006, 'Two years of INTEGRAL monitoring of the soft gamma-ray repeater SGR 1806-20: from quiescence to frenzy', Astronomy and Astrophysics, vol. 445, no. 1, pp. 313-321. https://doi.org/10.1051/0004-6361:20053648

TY - JOUR

T1 - Two years of INTEGRAL monitoring of the soft gamma-ray repeater SGR 1806-20: from quiescence to frenzy

AU - Gotz, D.

AU - Mereghetti, S.

AU - Molkov, S.

AU - Hurley, K.

AU - Mirabel, I.F.

AU - Sunyaev, R.

AU - Weidenspointner, G.

AU - Brandt, Søren Kristian

AU - Del Santo, M.

AU - Feroci, M.

AU - Gogus, E.

AU - von Kienlin, A.

AU - van der Klis, M.

AU - Kouveliotou, C.

AU - Lund, Niels

AU - Pizzichini, G.

AU - Ubertini, P.

AU - Winkler, C.

AU - Woods, P.M.

PY - 2006

Y1 - 2006

N2 - SGR 1806-20 has been observed for more than 2 years with the INTEGRAL satellite. In this period the source went from a quiescent state into a very active one culminating in a giant flare on December 27, 2004. Here we report on the properties of all the short bursts detected with INTEGRAL before the giant flare. We derive their number-intensity distribution and confirm the hardness-intensity correlation for the bursts found by Gotz et al. (2004a, A&A, 417, L45). Our sample includes a very bright outburst that occurred on October 5, 2004, during which over one hundred bursts were emitted in 10 minutes, involving an energy release of 3 x 1042 erg. We present a detailed analysis of it and discuss our results in the framework of the magnetar model.

AB - SGR 1806-20 has been observed for more than 2 years with the INTEGRAL satellite. In this period the source went from a quiescent state into a very active one culminating in a giant flare on December 27, 2004. Here we report on the properties of all the short bursts detected with INTEGRAL before the giant flare. We derive their number-intensity distribution and confirm the hardness-intensity correlation for the bursts found by Gotz et al. (2004a, A&A, 417, L45). Our sample includes a very bright outburst that occurred on October 5, 2004, during which over one hundred bursts were emitted in 10 minutes, involving an energy release of 3 x 1042 erg. We present a detailed analysis of it and discuss our results in the framework of the magnetar model.

KW - gamma rays : bursts

KW - stars : pulsars : general

KW - stars : pulsars : individual : SGR 1806-20

KW - gamma rays : observations

U2 - 10.1051/0004-6361:20053648

DO - 10.1051/0004-6361:20053648

M3 - Journal article

SN - 0004-6361

VL - 445

SP - 313

EP - 321

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 1

ER -

Two years of INTEGRAL monitoring of the soft gamma-ray repeater SGR 1806-20: from quiescence to frenzy

Abstract

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this