Chandra X-ray Observations of the Spiral Galaxy M81

Details Chandra X-ray Observations of the Spiral Galaxy M81 Chandra X-ray Observations of the Spiral Galaxy M81

2002-06-11

arxiv.org/abs/astro-ph/0206160v1

Astronomy and Astrophysics

Astrophysics

27 pages, 17 figures, 2 tables, submitted to ApJ

Scientific paper

10.1086/345084

A Chandra X-Ray Observatory ACIS-S imaging observation is used to study the population of X-ray sources in the nearby Sab galaxy M81 (NGC 3031). A total of 177 sources are detected with 124 located within the D25 isophote to a limiting X-ray luminosity of 3e36 ergs/cm2/s. Source positions, count rates, luminosities in the 0.3-8.0 keV band, limiting optical magnitudes, and potential counterpart identifications are tabulated. Spectral and timing analysis of the 36 brightest sources are reported including the low-luminosity active galactic nucleus, SN 1993J, and the Einstein-discovered ultra-luminous X-ray source X6.

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