Properties Of The Ulx Population In M82 From The 480ks Gnom82es Observationes
Abstract
We present an initial analysis of the ULX population in the star-forming galaxy M82 utilizing the new 480 ks Great NASA Observatories M82 Extended Survey (gnoM82es) observations as well as archival Chandra data to present long-term variability. The archival M82 observations consist of 9 pointings with the ACIS instrument (225 ks) and an additional 3 with the HRC (190 ks). In these archival observations, a total of 7 sources in excess of 5e38 erg/s were detected, only 3 of which exceed that luminosity in the gnoM82es observations. We also detect one additional source in excess of 5e38 erg/s. We present preliminary spectral and temporal analysis for these 8 sources. Though the spectrum of M82 X-1 is severely piled up in the observations obtained by the abstract deadline, we present preliminary spectral analysis using the pileup model to try to constrain its luminosity and general spectral shape.
- Publication:
-
AAS/High Energy Astrophysics Division #11
- Pub Date:
- March 2010
- Bibcode:
- 2010HEAD...11.2904K