Galaxy Clusters in the Swift/BAT era: Hard X-rays in the ICM TeX Export

@article{citeulike:3180451, abstract = {We report about the detection of 10 clusters of galaxies in the ongoing Swift/BAT all-sky survey. This sample, which comprises mostly merging clusters, was serendipitously detected in the 15--55 keV band. We use the BAT sample to investigate the presence of excess hard X-rays above the thermal emission. The BAT clusters do not show significant (e.g. \>2 \$\sigma\$) non-thermal hard X-ray emission. The only exception is represented by Perseus whose high-energy emission is likely due to NGC 1275. Using XMM-Newton, Swift/XRT, Chandra and BAT data, we are able to produce upper limits on the Inverse Compton (IC) emission mechanism which are in disagreement with most of the previously claimed hard X-ray excesses. The coupling of the X-ray upper limits on the IC mechanism to radio data shows that in some clusters the magnetic field might be larger than 0.5 \$\mu\$G. We also derive the first logN-logS and luminosity function distribution of galaxy clusters above 15 keV.}, archivePrefix = {arXiv}, author = {Ajello, M. and Rebusco, P. and Cappelluti, N. and Reimer, O. and Boehringer, H. and Greiner, J. and Gehrels, N. and Tueller, J. and Moretti, A.}, citeulike-article-id = {3180451}, citeulike-linkout-0 = {http://arxiv.org/abs/0809.0006}, citeulike-linkout-1 = {http://arxiv.org/pdf/0809.0006}, day = {30}, eprint = {0809.0006}, keywords = {agn, bat, clusters, hard, swift, x-ray}, month = {Aug}, posted-at = {2008-09-02 04:14:00}, priority = {2}, title = {Galaxy Clusters in the Swift/BAT era: Hard X-rays in the ICM}, url = {http://arxiv.org/abs/0809.0006}, year = {2008} }

TY - JOUR ID - citeulike:3180451 L3 - citeulike-article-id:3180451 N2 - We report about the detection of 10 clusters of galaxies in the ongoing Swift/BAT all-sky survey. This sample, which comprises mostly merging clusters, was serendipitously detected in the 15--55 keV band. We use the BAT sample to investigate the presence of excess hard X-rays above the thermal emission. The BAT clusters do not show significant (e.g. >2 $\sigma$) non-thermal hard X-ray emission. The only exception is represented by Perseus whose high-energy emission is likely due to NGC 1275. Using XMM-Newton, Swift/XRT, Chandra and BAT data, we are able to produce upper limits on the Inverse Compton (IC) emission mechanism which are in disagreement with most of the previously claimed hard X-ray excesses. The coupling of the X-ray upper limits on the IC mechanism to radio data shows that in some clusters the magnetic field might be larger than 0.5 $\mu$G. We also derive the first logN-logS and luminosity function distribution of galaxy clusters above 15 keV. TI - Galaxy Clusters in the Swift/BAT era: Hard X-rays in the ICM KW - agn KW - bat KW - clusters KW - hard KW - swift KW - x-ray AU - Ajello, M AU - Rebusco, P AU - Cappelluti, N AU - Reimer, O AU - Boehringer, H AU - Greiner, J AU - Gehrels, N AU - Tueller, J AU - Moretti, A PY - 2008/Aug/30/ UR - http://arxiv.org/abs/0809.0006 ER -