Radial Temperature Profiles of 11 Clusters of Galaxies Observed withBEPPOSAX | Zendy

Jimmy A. Irwin | Zendy; Joel N. Bregman | Zendy

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Radial Temperature Profiles of 11 Clusters of Galaxies Observed withBEPPOSAX

Author(s) -

Jimmy A. Irwin,

Joel N. Bregman

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/309148

Subject(s) - rosat , astrophysics , radius , virial theorem , physics , cluster (spacecraft) , redshift , galaxy cluster , galaxy , computer security , computer science , programming language

We have derived azimuthally-averaged radial temperature profiles of the X-raygas contained within 11 clusters of galaxies with redshift z=0.03-0.2 withBeppoSAX. Each of the 11 clusters have had their radial temperature profilespreviously determined with ASCA. We find that the temperature profiles of theseclusters are generally flat or increase slightly out to ~30% of the virialradius, and that a decline in temperature of 14% out to 30% of the virialradius is ruled out at the 99% confidence level. This is in accordance with aprevious ROSAT PSPC study and an ASCA study by White (1999), but indisagreement with an ASCA study by Markevitch et al. (1998) that found onaverage that cluster temperature profiles decreased significantly with radius.Comment: 13 pages, 11 embedded Postscript figures, uses emulateapj.sty, accepted by Astrophysical Journa

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