Beppo-Sax Observation of the Coma cluster

1998/08/03 by R. Fusco‐Femiano, R. Fusco-Femiano, D. Dal Fiume +10
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #Gamma-ray bursts and supernovae #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9808012

4 LaTex pages, 1 encapsulated Postscript figure, to appear in the Proceedings of "32nd COSPAR Scientific Assembly, Nagoya, Japan, 12-19 July 1998"; [email protected]

arxiv created 1998/08/03 · openalex publication_date 1998/08/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present first results of the BeppoSAX observation of the Coma Cluster. Thanks to the unprecedented sensitivity of the PDS instrument, the source has been detected up to ~80 keV. There is clear evidence for emission in excess to the thermal one above ~25 keV, very likely of non-thermal origin. We have therefore, for the first time, detected the long sought Inverse Compton emission on CMB photons predicted in clusters, like Coma, with radio halos. Combining X and radio observations, a value of 0.16 micro Gauss for the volume-averaged intracluster magnetic field is derived.

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