Constraints Imposed by a High Magnetic Field on Models for the EUV Emission in the Coma Cluster

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dc.creatorTsay, Ming Yann
dc.creatorHwang, Chorng-Yuan
dc.creatorBowyer, Stuart
dc.date2001-11-05
dc.date.accessioned2026-07-07T02:01:12Z
dc.date.available2026-07-07T02:01:12Z
dc.descriptionA variety of models have been explored in regard to the origin of the excess extreme ultraviolet (~ 0.1 keV) emission in the Coma cluster. It is now established that the flux is non-thermal and the only non-thermal source mechanism that appears viable is inverse Compton emission produced by ~ 100 MeV electrons interacting with the cosmic microwave background photons. All but one of the models that have been proposed require a cluster magnetic field < 1 micro G. However, recent observations strongly suggest the magnetic field in the Coma cluster is ~ 5 micro G. We investigate the constraints on models imposed by a 5 micro G cluster field and find a limited class of models that are compatible with this constraint. We also investigate the possibility that the excess hard (40-60 keV) X-ray emission in the cluster is produced by inverse Compton emission with the same electron population that produces the EUV excess. We find no scenarios that are compatible with a large cluster magnetic field, and consequently in this case these two components must be unrelated.
dc.description21 pages, 10 figures, Accepted for publication in ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0111072
dc.identifierhttp://arxiv.org/abs/astro-ph/0111072
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3660
dc.subjectAstrophysics
dc.titleConstraints Imposed by a High Magnetic Field on Models for the EUV Emission in the Coma Cluster
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