SUZAKU OBSERVATION OF THE NEW SOFT GAMMA REPEATER SGR 0501+4516 IN OUTBURST

被引：35

作者：

Enoto, T. ^{[1
]}

Nakagawa, Y. E. ^{[2
]}

Rea, N. ^{[3
]}

Esposito, P. ^{[4
,5
]}

Goetz, D. ^{[6
]}

Hurley, K. ^{[7
]}

Israel, G. L. ^{[8
]}

Kokubun, M. ^{[9
]}

Makishima, K. ^{[1
,2
]}

Mereghetti, S. ^{[4
]}

Murakami, H. ^{[10
]}

Nakazawa, K. ^{[1
]}

Sakamoto, T. ^{[11
]}

Stella, L. ^{[8
]}

Tiengo, A. ^{[4
]}

Turolla, R. ^{[12
,13
]}

Yamada, S. ^{[1
]}

Yamaoka, K. ^{[14
]}

Yoshida, A. ^{[14
]}

Zane, S. ^{[13
]}

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[2] Inst Phys & Chem Res RIKEN, Cosm Radiat Lab, Wako, Saitama 3510198, Japan

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

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

[5] Ist Nazl Fis Nucl, I-27100 Pavia, Italy

[6] CEA Saclay, DSM Irfu Serv Astrophys, F-91191 Gif Sur Yvette, France

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

[8] INAF Astron Observ Rome, I-00040 Monte Porzio Catone, RM, Italy

[9] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[10] Rikkyo Univ, Dept Phys, Toshima Ku, Tokyo 1718501, Japan

[11] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[12] Univ Padua, Dept Phys, I-35131 Padua, Italy

[13] Univ Coll London, MSSL, Dorking RH5 6NT, Surrey, England

[14] Aoyama Gakuin Univ, Dept Math & Phys, Kanagawa 2298558, Japan

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2009年 / 693卷 / 02期

关键词：

pulsars: individual (SGR 0501+4516); stars: magnetic fields; X-rays: stars; MAGNETIZED NEUTRON-STARS; BOARD SUZAKU; SHORT BURSTS; GIANT FLARE; RAY; SGR-1900+14; SGR-1806-20; HETE-2;

D O I：

10.1088/0004-637X/693/2/L122

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first Suzaku observation of the new Soft Gamma Repeater, SGR 0501+4516, performed on 2008 August 26, four days after the onset of bursting activity of this new member of the magnetar family. The soft X-ray persistent emission was detected with the X-ray Imaging Spectrometer (XIS) at a 0.5-10 keV flux of 3.8 x 10-(11) erg s(-1) cm(-2), with a spectrum well fitted by an absorbed blackbody plus power-law model. The source pulsation was confirmed at a period of 5.762072 +/- 0.000002 s, and 32 X-ray bursts were detected by the XIS, four of which were also detected at higher energies by the Hard X-ray Detector (HXD). The strongest burst, which occurred at 03:16:16.9 (UTC), was so bright that it caused instrumental saturation, but its precursor phase, lasting for about 200 ms, was detected successfully over the 0.5-200 keV range, with a fluence of similar to 2.1 x 10(-7) erg cm-2 and a peak intensity of about 89 crab. The entire burst fluence is estimated to be similar to 50 times higher. The precursor spectrum was very hard, and well modeled by a combination of two blackbodies. We discuss the bursting activity and X/gamma-ray properties of this newly discovered Soft Gamma Repeater in comparison with other members of the class.

引用

页码：L122 / L126

页数：5

共 22 条

[1]

Barthelmy S.D., 2008, GRB Coordinates Network, V8113, P1

[2] The glitches of the anomalous X-ray pulsar 1RXS J170849.0-400910 [J].

Dall'Osso, S ;

Israel, GL ;

Stella, L ;

Possenti, A ;

Perozzi, E .

ASTROPHYSICAL JOURNAL, 2003, 599 (01) :485-497

[3] The 2008 May burst activation of SGR 1627-41 [J].

Esposito, P. ;

Israel, G. L. ;

Zane, S. ;

Senziani, F. ;

Starling, R. L. C. ;

Rea, N. ;

Palmer, D. M. ;

Gehrels, N. ;

Tiengo, A. ;

De Luca, A. ;

Goetz, D. ;

Mereghetti, S. ;

Romano, P. ;

Sakamoto, T. ;

Barthelmy, S. D. ;

Stella, L. ;

Turolla, R. ;

Feroci, M. ;

Mangano, V. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 390 (01) :L34-L38

[4] Broadband X-ray spectra of short bursts from SGR 1900+14 [J].

Feroci, M ;

Caliandro, GA ;

Massaro, E ;

Mereghetti, S ;

Woods, PM .

ASTROPHYSICAL JOURNAL, 2004, 612 (01) :408-413

[5] An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20 [J].

Gaensler, BM ;

Kouveliotou, C ;

Gelfand, JD ;

Taylor, GB ;

Eichler, D ;

Wijers, RAMJ ;

Granot, J ;

Ramirez-Ruiz, E ;

Lyubarsky, YE ;

Hunstead, RW ;

Campbell-Wilson, D ;

van der Horst, AJ ;

McLaughlin, MA ;

Fender, RP ;

Garrett, MA ;

Newton-McGee, KJ ;

Palmer, DM ;

Gehrels, N ;

Woods, PM .

NATURE, 2005, 434 (7037) :1104-1106

[6]

Gogus E., 2008, The Astronomer's Telegram, P1677

[7] Physics of strongly magnetized neutron stars [J].

Harding, Alice K. ;

Lai, Dong .

REPORTS ON PROGRESS IN PHYSICS, 2006, 69 (09) :2631-2708

[8]

Holland S. T., 2008, GCN Rep, V160, P1

[9] An exceptionally bright flare from SGR 1806-20 and the origins of short-duration γ-ray bursts [J].

Hurley, K ;

Boggs, SE ;

Smith, DM ;

Duncan, RC ;

Lin, R ;

Zoglauer, A ;

Krucker, S ;

Hurford, G ;

Hudson, H ;

Wigger, C ;

Hajdas, W ;

Thompson, C ;

Mitrofanov, I ;

Sanin, A ;

Boynton, W ;

Fellows, C ;

von Kienlin, A ;

Lichti, G ;

Rau, A ;

Cline, T .

NATURE, 2005, 434 (7037) :1098-1103

[10] A Swift gaze into the 2006 March 29 burst forest of SGR 1900+14 [J].

Israel, G. L. ;

Romano, P. ;

Mangano, V. ;

Dall'Osso, S. ;

Chincarini, G. ;

Stella, L. ;

Campana, S. ;

Belloni, T. ;

Tagliaferri, G. ;

Blustin, A. J. ;

Sakamoto, T. ;

Hurley, K. ;

Zane, S. ;

Moretti, A. ;

Palmer, D. ;

Guidorzi, C. ;

Burrows, D. N. ;

Gehrels, N. ;

Krimm, H. A. .

ASTROPHYSICAL JOURNAL, 2008, 685 (02) :1114-1128

← 1 2 3 →