WIDE-BAND SUZAKU ANALYSIS OF THE PERSISTENT EMISSION FROM SGR 0501+4516 DURING THE 2008 OUTBURST

被引：24

作者：

Enoto, T. ^{[1
]}

Rea, N. ^{[2
,3
]}

Nakagawa, Y. E. ^{[4
]}

Makishima, K. ^{[1
,4
]}

Sakamoto, T. ^{[5
]}

Esposito, P. ^{[6
,7
]}

Goetz, D. ^{[8
]}

Hurley, K. ^{[9
]}

Israel, G. L. ^{[10
]}

Kokubun, M. ^{[11
]}

Mereghetti, S. ^{[6
]}

Murakami, H. ^{[12
]}

Nakazawa, K. ^{[1
]}

Stella, L. ^{[10
]}

Tiengo, A. ^{[6
]}

Turolla, R. ^{[13
,14
]}

Yamada, S. ^{[1
]}

Yamaoka, K. ^{[15
]}

Yoshida, A. ^{[15
]}

Zane, S. ^{[14
]}

机构：

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

[2] Fac Ciencias, ICE CSIC, IEEC, Barcelona 08193, Spain

[3] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands

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

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

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

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

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

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

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

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

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

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

[14] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England

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

来源：

ASTROPHYSICAL JOURNAL | 2010年 / 715卷 / 01期

关键词：

pulsars: individual (SGR 0501+4516); stars: neutron; X-rays: stars; X-RAY PULSARS; HIGH-ENERGY CHARACTERISTICS; XMM-NEWTON; DISCOVERY; MAGNETARS; RXTE; TAIL;

D O I：

10.1088/0004-637X/715/1/665

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We observed the soft gamma repeater SGR 0501+4516 with Suzaku for similar to 51 ks on 2008 August 26-27, about 4 days after its discovery. Following the first paper, which reported on the persistent soft X-ray emission and the wide-band spectrum of an intense short burst, this paper presents an analysis of the persistent broadband (1-70 keV) spectra of this source in outburst, taken with the X-ray Imaging Spectrometer (XIS) and the Hard X-ray Detector (HXD). Pulse-phase folding in the 12-35 keV HXD-PIN data on an ephemeris based on multi-satellite timing measurements at soft X-rays revealed the pulsed signals at greater than or similar to 99% confidence in the hard X-ray band. The wide-band spectrum clearly consists of a soft component and a separate hard component, crossing over at similar to 7 keV. When the soft component is modeled by a blackbody plus a Comptonized blackbody, the hard component exhibits a 20-100 keV flux of 4.8(-0.6)(+0.8) (stat.)(-0.4)(+ 0.8) (sys.) x 10(-11) erg s(-1) cm(-2) and a photon index of Gamma = 0.79(-0.18)(+ 0.01) (sys.). The hard X-ray data are compared with those obtained by INTEGRAL about 1 day later. Combining the present results with those on other magnetars, we discuss a possible correlation between the spectral hardness of magnetars and their characteristic age and magnetic field strengths.

引用

页码：665 / 670

页数：6

共 31 条

[1] Resonant compton upscattering in Anomalous X-ray Pulsars [J].

Baring, Matthew G. ;

Harding, Alice K. .

ASTROPHYSICS AND SPACE SCIENCE, 2007, 308 (1-4) :109-118

[2]

BARTHELMY SD, 2008, 8113 GCN, P1

[3] THE FOURTH IBIS/ISGRI SOFT GAMMA-RAY SURVEY CATALOG [J].

Bird, A. J. ;

Bazzano, A. ;

Bassani, L. ;

Capitanio, F. ;

Fiocchi, M. ;

Hill, A. B. ;

Malizia, A. ;

McBride, V. A. ;

Scaringi, S. ;

Sguera, V. ;

Stephen, J. B. ;

Ubertini, P. ;

Dean, A. J. ;

Lebrun, F. ;

Terrier, R. ;

Renaud, M. ;

Mattana, F. ;

Goetz, D. ;

Rodriguez, J. ;

Belanger, G. ;

Walter, R. ;

Winkler, C. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2010, 186 (01) :1-9

[4]

BUCCHERI R, 1983, ASTRON ASTROPHYS, V128, P245

[5] Detailed high-energy characteristics of AXP 1RXS J170849-400910 -: Probing the magnetosphere using INTEGRAL, RXTE, and XMM-Newton [J].

den Hartog, P. R. ;

Kuiper, L. ;

Hermsen, W. .

ASTRONOMY & ASTROPHYSICS, 2008, 489 (01) :263-279

[6] Detailed high-energy characteristics of AXP 4U 0142+61 -: Multi-year observations with INTEGRAL, RXTE, XMM-Newton, and ASCA [J].

den Hartog, P. R. ;

Kuiper, L. ;

Hermsen, W. ;

Kaspi, V. M. ;

Dib, R. ;

Knodlseder, J. ;

Gavriil, F. P. .

ASTRONOMY & ASTROPHYSICS, 2008, 489 (01) :245-261

[7] INTEGRAL survey of the Cassiopeia region in hard X rays [J].

den Hartog, PR ;

Hermsen, W ;

Kuiper, L ;

Vink, J ;

't Zand, JJMI ;

Collmar, W .

ASTRONOMY & ASTROPHYSICS, 2006, 451 (02) :587-602

[8] SUZAKU OBSERVATION OF THE NEW SOFT GAMMA REPEATER SGR 0501+4516 IN OUTBURST [J].

Enoto, T. ;

Nakagawa, Y. E. ;

Rea, N. ;

Esposito, P. ;

Goetz, D. ;

Hurley, K. ;

Israel, G. L. ;

Kokubun, M. ;

Makishima, K. ;

Mereghetti, S. ;

Murakami, H. ;

Nakazawa, K. ;

Sakamoto, T. ;

Stella, L. ;

Tiengo, A. ;

Turolla, R. ;

Yamada, S. ;

Yamaoka, K. ;

Yoshida, A. ;

Zane, S. .

ASTROPHYSICAL JOURNAL LETTERS, 2009, 693 (02) :L122-L126

[9] Suzaku Discovery of a Hard X-Ray Tail in the Persistent Spectra from the Magnetar 1E 1547.0-5408 during its 2009 Activity [J].

Enoto, Teruaki ;

Nakazawa, Kazuhiro ;

Makishima, Kazuo ;

Nakagawa, Yujin E. ;

Sakamoto, Takanori ;

Ohno, Masanori ;

Takahashi, Tadayuki ;

Terada, Yukikatsu ;

Yamaoka, Kazutaka ;

Murakami, Toshio ;

Takahashi, Hiromitsu .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2010, 62 (02) :475-485

[10] Modeling and Reproducibility of Suzaku HXD PIN/GSO Background [J].

Fukazawa, Yasushi ;

Mizuno, Tsunefumi ;

Watanabe, Shin ;

Kokubun, Motohide ;

Takahashi, Hiromitsu ;

Kawano, Naomi ;

Nishino, Sho ;

Sasada, Mahito ;

Shirai, Hirohisa ;

Takahashi, Takuya ;

Umeki, Yudai ;

Yamasaki, Tomonori ;

Yasuda, Tomonori ;

Bamba, Aya ;

Ohno, Masanori ;

Takahashi, Tadayuki ;

Ushio, Masayoshi ;

Enoto, Teruaki ;

Kitaguchi, Takao ;

Makishima, Kazuo ;

Nakazawa, Kazuhiro ;

Uehara, Yuichi ;

Yamada, Shin'ya ;

Yuasa, Takayuki ;

Isobe, Naoki ;

Kawaharada, Madoka ;

Tanaka, Takaaki ;

Tashiro, Makoto S. ;

Terada, Yukikatsu ;

Yamaoka, Kazutaka .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2009, 61 :S17-S33

← 1 2 3 4 →