A wide Chandra view of the core of the Perseus cluster
Identifieur interne : 000169 ( France/Analysis ); précédent : 000168; suivant : 000170A wide Chandra view of the core of the Perseus cluster
Auteurs : A. C. Fabian [Royaume-Uni] ; J. S. Sanders ; S. W. Allen [États-Unis] ; R. E. A. Canning ; E. Churazov [Allemagne] ; C. S. Crawford ; W. Forman [États-Unis] ; J. Gabany [États-Unis] ; J. Hlavacek-Larrondo ; R. M. Johnstone ; H. R. Russell [Canada] ; C. S. Reynolds [États-Unis] ; P. Salomé [France] ; G. B. Taylor [États-Unis, Royaume-Uni] ; A. J. YoungSource :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2011-12-21.
English descriptors
- KwdEn :
Abstract
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.
Url:
DOI: 10.1111/j.1365-2966.2011.19402.x
Affiliations:
- Allemagne, Canada, France, Royaume-Uni, États-Unis
- Californie, Maryland, Massachusetts, Nouveau-Mexique, Île-de-France
- College Park (Maryland), Paris
- Université du Maryland
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 002A19
- to stream Istex, to step Curation: 002A19
- to stream Istex, to step Checkpoint: 000479
- to stream Main, to step Merge: 001972
- to stream Main, to step Curation: 001894
- to stream Main, to step Exploration: 001894
- to stream France, to step Extraction: 000169
Links to Exploration step
ISTEX:F9648690C09CCD45C081ECE3629BA1661B286C73Le document en format XML
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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.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Canada</li><li>France</li><li>Royaume-Uni</li><li>États-Unis</li></country><region><li>Californie</li><li>Maryland</li><li>Massachusetts</li><li>Nouveau-Mexique</li><li>Île-de-France</li></region><settlement><li>College Park (Maryland)</li><li>Paris</li></settlement><orgName><li>Université du Maryland</li></orgName></list><tree><noCountry><name sortKey="Canning, R E A" sort="Canning, R E A" uniqKey="Canning R" first="R. E. A." last="Canning">R. E. A. Canning</name><name sortKey="Crawford, C S" sort="Crawford, C S" uniqKey="Crawford C" first="C. S." last="Crawford">C. S. Crawford</name><name sortKey="Hlavacek Arrondo, J" sort="Hlavacek Arrondo, J" uniqKey="Hlavacek Arrondo J" first="J." last="Hlavacek-Larrondo">J. 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