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Paper: Spectra and Evolution of Two X-Ray Sources in M81
Volume: 230, Galaxy Disks and Disk Galaxies
Page: 397
Authors: La Parola, V.; Peres, G.; Fabbiano, G.; Kim, D. W.
Abstract: We analyzed the spectral and temporal features of X-ray sources in M81 using data from all the relevant ROSAT-PSPC/HRI observations. We discuss the main features of the point-like nucleus and of the second brightest source in the field (X-9), whose identification is still unclear.
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