Extreme Ultraviolet ExplorerObservations of Clusters of Galaxies: Virgo and M87

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Abstract
We present results of a reanalysis of archival Extreme Ultraviolet Explorer (EUVE) data of the central region of the Virgo Cluster. We employ the new analysis method developed by Bowyer, Berghöfer, & Korpela and find diffuse emission reaching out to a distance of ≈13'. The spatial distribution of this flux is incompatible with a thermal plasma origin. We investigate whether this emission is due to inverse Compton scattering of relativistic electrons against the 3 K blackbody background. We show that this emission cannot be produced by an extrapolation to lower energies of the observed synchrotron radio-emitting electrons, and an additional component of low-energy relativistic electrons is required. In addition to discussing the diffuse EUV emission, we present an analysis of the EUV emission originating from the jet in M87.

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