The Coma Cluster at gamma-ray energies: multifrequency constraints

Details The Coma Cluster at gamma-ray energies: multifrequency constraints The Coma Cluster at gamma-ray energies: multifrequency constraints

2004-05-12

arxiv.org/abs/astro-ph/0405224v2

Astron.Astrophys. 424 (2004) 773-778

Astronomy and Astrophysics

Astrophysics

7 pages, 2 figures, A&A, accepted; Minor changes to reflect the accepted version

Scientific paper

10.1051/0004-6361:20041174

The Coma cluster exhibits evidence for a high-energetic non-thermal particle population. At frequencies >1 GHz recent radio halo observations confirm a significant spectral steepening of the volume-integrated emission. We calculate the volume-averaged high-energy spectrum due to inverse Compton scattering off the CMB radiation field and non-thermal bremsstrahlung according to an exponential cutoff in the electron spectrum as deduced from the radio observations. The synchrotron radiation from secondary pairs, created from the decay of charged mesons produced in hadronic pp-interactions, is found to set significant constraints on the energy content of relativistic hadrons in Coma. This limits the maximum flux at high energies. Our findings support a low ratio of relativistic hadron to thermal energy density. Predictions for Coma's high energy emission are discussed in the light of current and expected abilities of upcoming gamma-ray instruments.

Affiliated with

Also associated with

No associations

Rating

The Coma Cluster at gamma-ray energies: multifrequency constraints does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Coma Cluster at gamma-ray energies: multifrequency constraints, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Coma Cluster at gamma-ray energies: multifrequency constraints will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-535742