NEW X-RAY SOURCES NEAR THE GALACTIC BULGE REGION

被引：0
作者：
YAMAUCHI, S
KOYAMA, K
机构：
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 1990年 / 42卷 / 06期
关键词：
LOW MASS X-RAY BINARIES; ULTRASOFT SPECTRA; X-RAY SOURCES; X-RAY SPECTRA;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Nine new X-ray sources were discovered by the Ginga satellite during survey observations near the Galactic bulge region. Seven of the sources were found to have a hardness ratio similar to that of low-mass binary X-ray sources (LMXBs). One source has a hard spectrum with large low-energy absorption similar to that of X-ray pulsars. The other source, GS 1734-275, was found to be variable over a long time. It also exhibited an unusually soft spectrum, and, hence, could be a potential candidate for a black-hole binary. We also found that the EXOSAT new source, GPS 1742-326, has a typical LMXB spectrum.
引用
收藏
页码：L83 / L91
页数：9
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