Journal Article

A wide <i>Chandra</i> view of the core of the Perseus cluster

A. C. Fabian, J. S. Sanders, S. W. Allen, R. E. A. Canning, E. Churazov, C. S. Crawford, W. Forman, J. GaBany, J. Hlavacek-Larrondo, R. M. Johnstone, H. R. Russell, C. S. Reynolds, P. Salomé, G. B. Taylor and A. J. Young

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 418, issue 4, pages 2154-2164
Published in print December 2011 | ISSN: 0035-8711
Published online December 2011 | e-ISSN: 1365-2966 | DOI:
A wide Chandra view of the core of the Perseus cluster

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We present new Chandra images of the X-ray emission from the core of the Perseus cluster of galaxies. The total observation time is now 1.4 Ms. New depressions in X-ray surface brightness are discovered to the north of NGC 1275, which we interpret as old rising bubbles. They imply that bubbles are long-lived and do not readily breakup when rising in the hot cluster atmosphere. The existence of a 300 kpc long NNW–SSW bubble axis means there cannot be significant transverse large-scale flows exceeding 100 km s−1. Interesting spatial correlations are seen along that axis in early deep radio maps. A semicircular cold front about 100 kpc west of the nucleus is seen. It separates an inner disturbed region dominated by the activity of the active nucleus of NGC 1275 from the outer region where a subcluster merger dominates.

Keywords: galaxies: clusters: general; galaxies: individual: NGC 1275; intergalactic medium; X-rays: galaxies

Journal Article.  4866 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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