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Spectral and temporal properties of X-ray emission from the ultra-luminous source X-9 in M81 | | V.La Parola
; G.Fabbiano
; D.W.Kim
; G.Peres
; | | Date: |
7 Feb 2001 | | Subject: | astro-ph | | Affiliation: | UniPa, SAO-CfA | | Abstract: | We have analysed the spectra and the variability of individual X-ray sources in the M-81 field using data from the available ROSAT-PSPC and ROSAT-HRI observations of this nearby spiral galaxy. Here we present the results on the second brightest source in the field (X-9 - Fabbiano, 1988 ApJ 325 544), whose identification and interpretation is still unclear. Our work includes the study of the shape of X-9 from HRI data, the light curve and hardness ratio evolution, and the spectral analysis. | | Source: | arXiv, astro-ph/0102111 | | Services: | Forum | Review | PDF | Favorites | |
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