XMM- Newton Observation of the Coma Galaxy Cluster : The temperature structure in the central region

  title={XMM- Newton Observation of the Coma Galaxy Cluster : The temperature structure in the central region},
  author={M. Arnaud and N. Aghanim and R. Gastaud and D. Neumann and D. Lumb and U. Briel and B. Altieri and S. Ghizzardi and J. Mittaz and T. Sasseen and W. T. V. C. Saclay and France. and Ias Orsay and Ceasei Saclay and Esaestec Noordwijk and Netherlands. and Mpe Garching and Germany Esasoc Madrid and Spain Ifccnr Milano and Italy. and Mullard Space Science Laboratory and Uk and U. California and Santa Barbara Usa and Los Alamos National Laboratory and Usa},
  journal={Astronomy and Astrophysics},
  • M. Arnaud, N. Aghanim, +23 authors Usa
  • Published 2001
  • Physics
  • Astronomy and Astrophysics
  • We present a temperature map and a temperature profile of the central part (r < 20' or 1/4 virial radius) of the Coma cluster. We combined 5 overlapping pointings made with XMM/EPIC/MOS and extracted spectra in boxes of 3.5' x 3.5'. The temperature distribution around the two central galaxies is remarkably homogeneous (r < 10'), contrary to previous ASCA results, suggesting that the core is actually in a relaxed state. At larger distance from the cluster center we do see evidence for recent… CONTINUE READING
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