A wide Chandra view of the core of the Perseus cluster
| Autor: | E. M. Churazov, Jeremy S. Sanders, R. Jay Gabany, Helen Russell, R. M. Johnstone, P. Salomé, Steven W. Allen, Andrew J. Young, William R. Forman, Julie Hlavacek-Larrondo, C. S. Crawford, Andrew C. Fabian, Christopher S. Reynolds, G. B. Taylor, R. E. A. Canning |
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| Rok vydání: | 2011 |
| Předmět: |
Physics
010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena Perseus Cluster Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Breakup 01 natural sciences Galaxy Atmosphere Core (optical fiber) Cold front Space and Planetary Science 0103 physical sciences Cluster (physics) Surface brightness 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 418:2154-2164 |
| ISSN: | 0035-8711 |
| DOI: | 10.1111/j.1365-2966.2011.19402.x |
| Popis: | 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 NGC1275, 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. Interesting spatial correlations are seen along that axis in early deep radio maps. A semi-circular 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 NGC1275 from the outer region where a subcluster merger dominates. |
| Databáze: | OpenAIRE |
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