Pith. sign in

REVIEW 1 cited by

Hard X-Ray Radiation in the Coma Cluster Spectrum

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv astro-ph/9901018 v1 pith:6OY5Z26Y submitted 1999-01-04 astro-ph

classification astro-ph
keywords hardcomabeenclusterdetectedexcessfieldradiation
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

Hard X-ray radiation has been detected for the first time in the Coma cluster by BeppoSAX. Thanks to the unprecedented sensitivity of the Phoswich Detection System (PDS) instrument, the source has been detected up to ~80 keV. There is clear evidence (4.5 sigma) for non-thermal emission in excess of thermal above ~25 keV. The hard excess is very unlikely due to X Comae, the Seyfert 1 galaxy present in the field of view of the PDS. A hard spectral tail due to inverse Compton on CMB photons is predicted in clusters, like Coma, with radio halos. Combining the present results with radio observations, a volume-averaged intracluster magnetic field of ~0.15 micro G is derived, while the electron energy density of the emitting electrons is ~7x10**-14 erg/cm**3.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. NuSTAR Observations of the Galaxy Cluster Abell 3667

    astro-ph.HE 2025-05 conditional novelty 4.0 of 10

    Deep NuSTAR spectra of Abell 3667's core favor a two-temperature thermal model over an inverse Compton power law for the hard X-ray excess, with a ~0.2 uG magnetic field lower limit.

Pith tools