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A further long observation of MCG–6‐30‐15 with ASCA
Author(s) -
Matsumoto C.,
Inoue H.,
Iwasawa K.,
Fabian A.C.,
Negoro H.,
Matsuoka M.
Publication year - 1999
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/1521-3994(199908)320:4/5<312::aid-asna312>3.0.co;2-f
Subject(s) - physics , astrophysics , galaxy , line (geometry) , emission spectrum , astronomy , spectral line , mathematics , geometry
We present the results from the second long‐term (six‐day) observation of the Seyfert 1 galaxy MCG–6‐30‐15 with ASCA Owing to extremely good photon statistics, we detected a H‐like sulphur (S xvi ) edge in addition to the previously reported O VII and O VIII edges. The broad iron emission line with a red tail is confirmed. We investigated the variability of the iron line feature with a timescale of 2 × 10 4 s throughout the observation.