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arXiv:astro-ph/0002464 (astro-ph)
[Submitted on 24 Feb 2000]

Title:A Comparison of the Extra Nuclear X-ray and Radio Features in M87

Authors:D. E. Harris (SAO), F. Owen (NRAO), J. A. Biretta (STScI), W. Junor (UNM)
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Abstract: ROSAT High Resolution Imager (HRI) data from eight observations have been co-added to obtain an effective exposure of 230 ksec. We have identified a number of features and regions with excess X-ray brightness over that from a circularly symmetric model of the well known hot gas component. A prominent `spur' extends 4' from the vicinity of knot A towards the south-west. The brightness to the south and east of this spur is significantly higher than that to the north and west. Excess brightness is also found to the East of the nucleus, with a local maximum centered on the eastern radio lobe 3' from the core.
There are two well known relationships between radio and x-ray emission for radio galaxies in clusters: coincidence of emissions because the X-rays come from inverse Compton or synchrotron processes; and anti-coincidence caused by exclusion of hot gas from radio entities. We present a radio/X-ray comparison to determine if either of these relationships can be isolated in M87. The greatest obstacle we face is the unknown projection which affects both bands.
Comments: 4 pages Latex with 4 embedded figures, plus one color version (postscript) which was used on the cover of the conference proceedings. Published in MPE Report 271, October 1999, page 111. Proceedings of the Ringberg workshop: "Diffuse Thermal and Relativistic Plasma in Galaxy Clusters", editors H. Böhringer, L. Feretti, and P. Schuecker
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0002464
  (or arXiv:astro-ph/0002464v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0002464
Journal reference: MPE Report 271, October 1999, page 111

Submission history

From: D. E. Harris [view email]
[v1] Thu, 24 Feb 2000 17:03:20 UTC (571 KB)
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