A 168-s X-ray pulsar in the small magellanic cloud observed with ASCA

被引：3
|
作者：
Yokogawa, J [1 ]
Torii, K
Kohmura, T
Koyama, K
机构：
[1] Kyoto Univ, Grad Sch Sci, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan
[2] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[3] Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2001年 / 53卷 / 03期
关键词：
pulsars : individual (AX J0052.9-7157; RX J0052.9-7158; XTE j0054-720); stars; emission-line; Be; stars : neutron; X-rays : stars;
D O I：
10.1093/pasj/53.3.L9
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report on the detection of 167.8 +/- 0.2s pulsations from AX J0052.9-7157 in the Small Magellanic Cloud with ASCA. The pulsations show an energy-independent sinusoidal profile. The X-ray spectrum has been described by an absorbed hard power-law (photon index similar to 0.7) with a luminosity of similar to 8.8 x 10(35) ergs(-1) at a distance of 60kpc. The position is determined to be (R.A., Dec.)(J2000) = (00(h)52(m)59.(s)2, -71 degrees 57 ' 58 "), with an error radius of similar to 30 ". We have found that a variable Be/X-ray binary RX J0052.9-7158 is located within the 30 " error circle, and is also located at the edge of the 10 ' error circle of the 169-s pulsar XTE J0054-720. We therefore conclude that these are the same source, a Be/X-ray binary pulsar.
引用
收藏
页码：L9 / L12
页数：4
相关论文
共 50 条
  • [41] A NEW TRANSIENT PULSAR IN THE SMALL MAGELLANIC CLOUD WITH AN UNUSUAL X-RAY-SPECTRUM
    HUGHES, JP
    ASTROPHYSICAL JOURNAL, 1994, 427 (01): : L25 - L28
  • [42] Optical properties of Small Magellanic Cloud X-ray binaries
    Coe, MJ
    Edge, WRT
    Galache, JL
    McBride, VA
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 356 (02) : 502 - 514
  • [43] A long look at the Be/X-ray binaries of the Small Magellanic Cloud
    Galache, J. L.
    Corbet, R. H. D.
    Coe, M. J.
    Laycock, S.
    Schurch, M. P. E.
    Markwardt, C.
    Marshall, F. E.
    Lochner, J.
    ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2008, 177 (01): : 189 - 215
  • [44] Monitoring and discovering X-ray pulsars in the small magellanic cloud
    Corbet, RHD
    Laycock, S
    Coe, MJ
    Marshall, FE
    Markwardt, CB
    X-RAY TIMING 2003: ROSSI AND BEYOND, 2004, 714 : 337 - 341
  • [45] DEEP EINSTEIN X-RAY IMAGERY OF THE SMALL MAGELLANIC CLOUD
    BRUHWEILER, FC
    KLINGLESMITH, DA
    GULL, TR
    SOFIA, S
    ASTROPHYSICAL JOURNAL, 1987, 317 (01): : 152 - 162
  • [46] The X-ray spectrum of millisecond pulsar PSR J2124-3358 observed with ASCA
    Sakurai, I
    Kawai, N
    Negoro, H
    Torii, K
    Saito, Y
    Shibata, S
    ASTRONOMISCHE NACHRICHTEN, 1999, 320 (4-5) : 339 - 339
  • [47] XMM-newton observations of the Small Magellanic Cloud: XMMUJ004814.1-731003, a 25.55 s Be/X-ray binary pulsar
    Haber, F.
    Eger, P.
    Pietsch, W.
    Corbet, R. H. D.
    Sasaki, M.
    ASTRONOMY & ASTROPHYSICS, 2008, 485 (01): : 177 - 181
  • [48] The binary period and outburst behaviour of the Small Magellanic Cloud X-ray binary pulsar system SXP504
    Edge, WRT
    Coe, MJ
    Galache, JL
    McBride, VA
    Corbet, RHD
    Okazaki, AT
    Laycock, S
    Markwardt, CB
    Marshall, FE
    Udalski, A
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 361 (02) : 743 - 747
  • [49] Discovery of a 168.8 s X-ray pulsar transiting in front of its Be companion star in the Large Magellanic Cloud
    Maggi, P.
    Haberl, F.
    Sturm, R.
    Pietsch, W.
    Rau, A.
    Greiner, J.
    Udalski, A.
    Sasaki, M.
    ASTRONOMY & ASTROPHYSICS, 2013, 554
  • [50] Rosat observations of a new X-ray transient in the small Magellanic Cloud
    Clark, GW
    Remillard, RA
    Woo, JW
    ASTROPHYSICAL JOURNAL, 1997, 474 (02): : L111 - &
12345