Chandra imaging of the complex X-ray core of the Perseus cluster

Details Chandra imaging of the complex X-ray core of the Perseus cluster Chandra imaging of the complex X-ray core of the Perseus cluster

2000-07-30

arxiv.org/abs/astro-ph/0007456v1

Mon.Not.Roy.Astron.Soc.318:L65,2000

Astronomy and Astrophysics

Astrophysics

5 pages, 7 figures (6 colour), accepted by MNRAS, high resolution version at http://www-xray.ast.cam.ac.uk/papers/per_chandra.

Scientific paper

10.1046/j.1365-8711.2000.03904.x

We report subarcsec-resolution X-ray imaging of the core of the Perseus cluster around the galaxy NGC 1275 with the Chandra X-ray Observatory. The ROSAT-discovered holes associated with the radio lobes have X-ray bright rims which are cooler than the surrounding gas and not due to shocks. The holes themselves may contain some hotter gas. We map strong photoelectric absorption across the Northern lobe and rim due to a small infalling irregular galaxy, known as the high velocity system. Two outer holes, one of which was previously known, are identified with recently found spurs of low-frequency radio emission. The spiral appearance of the X-ray cooler gas and the outer optical parts of NGC 1275 may be due to angular momentum in the cooling flow.

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