2 papers
astro-ph2007
GRO J1655-40: from ASCA and XMM-Newton Observations
Xiao-Ling Zhang, Shuang Nan Zhang, Gloria Sala +3
We have analysed four ASCA observations (1994--1995, 1996--1997) and three XMM-Newton observations (2005) of this source, in all of which the source is in high/soft state. We model…
astro-ph2003
A New Method to Use Chandra Data to Resolve the X-Ray Halos Around Point Sources and Its Application to Cygnus X-1
Y. Yao, S. Nan Zhang, X. L. Zhang +1
With excellent angular resolution, good energy resolution and broad energy band, the Chandra ACIS is the best instrument for studying the X-ray halos around some galactic X-ray poi…