Chandra observations of two quiecent black-hole x-ray nova (BHXN), A0620-00 and GS2000+25 emphasize the reality of the difference in the x-ray luminosity swings...

We examine seven Chandra ACIS-I observations centered on the nucleus of M31. Recent Chandra [1] and XMM results [2] have shown evidence of diffuse emission and...

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We present the results of a series of Chandra observations of globular cluster (GC) X-ray sources in M31. Among some 20 GC X-ray sources detected in our M31...

As part of the Chandra Guaranteed Time Program we are imaging M31 once/month. The HRC is used to observe the entire galaxy to 10**37 ergs/sec, and interesting...

We present the latest results from the Chandra survey/monitoring program of M31. We will present spectral and timing information on the point sources, including...

We have been regularly observing the bulge and inner disk of M31 for nearly one year, using both the HRC-I and ACIS-I instruments on the Chandra X-Ray...

We have detected two globular clusters in the nuclear region of M31 with both Chandra and HST. These detections allow us to register the Chandra and HST images...

We report on 3 Chandra ACIS-I observations containing the two M31 transient X-ray sources announced by Haberl et al. (2006, ATel #881) and followed up by...