An XMM-Newton study of the sub-structure in M 87's halo

E Belsole*, JL Sauvageot, H Bohringer, DM Worrall, K Matsushita, RF Mushotzky, I Sakelliou, S Molendi, M Ehle, J Kennea, G Stewart, WT Vestrand

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

51 Citations (Scopus)

Abstract

The high signal to noise and good point spread function of XMM have allowed the first detailed study of the interaction between the thermal and radio emitting plasma in the central regions of M 87. We show that the X-ray emitting structure, previously seen by ROSAT, is thermal in nature and that the east and southwest extensions in M 87's X-ray; halo have a significantly lower temperature (kT = 1.5 keV) than the surrounding ambient medium (kT = 2.3 keV). There is little or no evidence for non-thermal emission with an upper limit on the contribution of a power law component of spectral index flatter than 3 being less than 1% of the flux iu the region of the radio lobes.

Original languageEnglish
Pages (from-to)L188-L194
Number of pages7
JournalAstronomy and Astrophysics
Volume365
Issue number1
Publication statusPublished - Jan 2001

Keywords

  • galaxies : clusters : individual : Virgo
  • galaxies : individual : M 87
  • radio continuum : galaxies
  • radio galaxies : individual : 3C 274
  • X-rays : galaxies
  • PHOTON IMAGING CAMERA
  • VIRGO CLUSTER
  • RADIO HALO
  • M87
  • GALAXIES
  • DISTANCE
  • MASS
  • GAS

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