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The AGN content of ROSAT and ASCA deep surveys

✍ Scribed by R. E. Griffiths; B. J. Boyle; I. Georgantopoulos; T. Shanks; K. Gunn; G. C. Stewart; A. Blair; O. Almaini


Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
307 KB
Volume
319
Category
Article
ISSN
0004-6337

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Supersoft sources in M31: Comparing the
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## Abstract To investigate the transient nature of supersoft sources (SSSs) in M 31, we compared SSS candidates ofthe XMM‐Newton Deep Survey, ROSAT PSPC surveys and the Chandra catalogues in the same field. We found 40 SSSs in the XMM‐Newton observations. While 12 of the XMM‐Newton sources were bri