A Potential Supernova Remnant/X-ray Binary Association in M31

Abstract

The well-studied X-ray/Optical/Radio supernova remnant DDB 1-15 (CXOM31 J004327.8+411829; r3-63) in M31 has been investigated with archival XMM-Newton and Chandra observations. The timing data from XMM-Newton reveals a power density spectrum (PDS) characteristic of accreting compact objects in X-ray binaries (XRBs). The PDS shows features typical of Roche lobe overflow accretion, hinting that the XRB is low-mass. The Chandra observations resolve the SNR into a shell and show a variable count rate at the 94% confidence level in the northwest quadrant. Together, these XMM-Newton and Chandra data suggest that there is an XRB in the SNR r3-63 and that the XRB is located in the northwestern portion of the SNR. The currently-available X-ray and optical data show no evidence that the XRB is high-mass. If the XRB is low-mass, r3-63 would be the first SNR found to contain a low-mass X-ray binary.

30 pages, 3 tables, 11 figures, accepted for publication in ApJ

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• The Chandra ACIS Survey of M33: X-ray, Optical and Radio Properties of the Supernova Remnants
• X-ray source variability study of the M 31 central field using Chandra HRC-I
• On the artificial nature of aperiodic variability in XMM-Newton observations of M31 X-ray sources and the ultraluminous X-ray source NGC 4559 ULX-7
• Long-term X-ray Variability Study of IC342 from XMM-Newton Observations
• Astrophysics in 2006