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

被引：41

作者：

Götz, D

Mereghetti, S

Molkov, S

Hurley, K

Mirabel, IF

Sunyaev, R

Weidenspointner, G

Brandt, S

Del Santo, M

Feroci, M

Gögüs, E

von Kienlin, A

van der Klis, M

Kouveliotou, C

Lund, N

Pizzichini, G

Ubertini, P

Winkler, C

Woods, PM

机构：

[1] INAF, Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy

[2] Russian Acad Sci, Inst Space Res, Moscow 117997, Russia

[3] Max Planck Inst Astrophys, D-85740 Munich, Germany

[4] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[5] European So Observ, Santiago 19, Chile

[6] Ctr Etud Spatiale Rayonnements, F-31028 Toulouse, France

[7] Danish Natl Space Ctr, DK-2100 Copenhagen, Denmark

[8] INAF, Ist Astrofis Spaziale & Fis Cosm, I-00133 Rome, Italy

[9] Sabanci Univ, Istanbul, Turkey

[10] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[11] Ctr High Energy Astrophys, NL-1098 SJ Amsterdam, Netherlands

[12] Natl Space Sci & Technol Ctr, Huntsville, AL 35805 USA

[13] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA

[14] INAF, Ist Astrofis Spaziale & Fis Cosm, I-40129 Bologna, Italy

[15] ESA, Estec, RSSD, NL-2201 AZ Noordwijk, Netherlands

[16] Univ Manchester, Dept Phys, Manchester M60 1QD, Lancs, England

来源：

ASTRONOMY & ASTROPHYSICS | 2006年 / 445卷 / 01期

关键词：

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

D O I：

10.1051/0004-6361:20053648

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：313 / 321

页数：9

共 42 条

[1] Konus catalog of soft gamma repeater activity: 1978 to 2000 [J].

Aptekar, RL ;

Frederiks, DD ;

Golenetskii, SC ;

Il'inskii, VN ;

Mazets, EP ;

Pal'shin, VD ;

Butterworth, PS ;

Cline, TL .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2001, 137 (02) :227-277

[2]

Arnaud KA, 1996, ASTR SOC P, V101, P17

[3]

BORKOWSKI J, 2004, GRB CIRCULAR NETWORK, P2920

[4]

CORBEL S, 2003, ASTRON ASTROPHYS, V419, P191

[5] MAXIUM-LIKELIHOOD ESTIMATION OF SLOPE FROM NUMBER-FLUX-DENSITY COUNTS OF RADIO SOURCES [J].

CRAWFORD, DF ;

JAUNCEY, DL ;

MURDOCH, HS .

ASTROPHYSICAL JOURNAL, 1970, 162 (02) :405-&

[6] FORMATION OF VERY STRONGLY MAGNETIZED NEUTRON-STARS - IMPLICATIONS FOR GAMMA-RAY BURSTS [J].

DUNCAN, RC ;

THOMPSON, C .

ASTROPHYSICAL JOURNAL, 1992, 392 (01) :L9-L13

[7]

FEROCI M, 2004, APJ, V612, P480

[8] Statistical properties of SGR 1806-20 bursts [J].

Gögüs, E ;

Woods, PM ;

Kouveliotou, C ;

van Paradijs, J ;

Briggs, MS ;

Duncan, RC ;

Thompson, C .

ASTROPHYSICAL JOURNAL, 2000, 532 (02) :L121-L124

[9]

GOLENETSKII S, 2004, GCN, P2665

[10]

GOLENETSKII SV, 1987, SOV ASTRON LETT+, V13, P166

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