ASCA discovery of an X-ray pulsar in the error box of SGR 1900+14

Authors
Hurley, K Li, P Kouveliotou, C Murakami, T Ando, M Strohmayer, T van Paradijs, J Vrba, F Luginbuhl, C Yoshida, A Smith, I
Citation
K. Hurley et al., ASCA discovery of an X-ray pulsar in the error box of SGR 1900+14, ASTROPHYS J, 510(2), 1999, pp. L111-L114
Citations number
26
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
510
Issue
2
Year of publication
1999
Part
2
Pages
L111 - L114
Database
ISI
SICI code
0004-637X(19990110)510:2<L111:ADOAXP>2.0.ZU;2-C
Abstract
We present a 2-10 keV ASCA observation of the field around the soft gamma r epeater SGR 1900+14. One quiescent X-ray source was detected in this observ ation, and it was in the SGR error box. In 2-10 keV X-rays, its spectrum ma y be fitted by a power Law with index -2.2, and its unabsorbed flux is 9.6 x 10(-12) ergs cm(-2) s(-1). We also find a clear 5.16 s period. The proper ties of the three well-studied soft gamma repeaters are remarkably similar to one another, and they provide evidence that all off them are associated with young, strongly magnetized neutron stars in supernova remnants.