@inproceedings{oai:jaxa.repo.nii.ac.jp:00004967,
 author = {滝沢, 元和 and 菅原, 知佳 and 中澤, 知洋 and Takizawa, Motokazu and Sugawara, Chika and Nakazawa, Kazuhiro},
 book = {宇宙航空研究開発機構特別資料:, JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H},
 month = {Feb},
 note = {The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan, We present the results of Suzaku observation of the radio halo cluster Abell 2319. We confirm that the line-of-sight velocities of the intracluster medium in the observed region are consistent with those of the member galaxies of entire A2319 and A2319A subgroup for the first time, though any velocity difference within the region is not detected. On the other hand, we do not find any signs of gas motion relevant to A2319B subgroup. Hard X-ray emission from the cluster is clearly detected, but its spectrum is likely thermal. Assuming a simple single temperature model for the thermal component, we find that the upper limit of the non-thermal inverse Compton component becomes 2.6 x 10(exp -11) erg s(exp -1) cm(exp -2) in the 10-40 keV band, which means that the lower limit of the magnetic field is 0.19 micro G with the radio spectral index 0.92. Considering that the lack of a significant amount of very hot (approximately 20 keV) gas and the strong bulk flow motion, it is more likely that the relativistic non-thermal electrons responsible for the radio halo are accelerated through the intracluster turbulence rather than the shocks., Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science, 資料番号: AA0064574035, レポート番号: JAXA-SP-09-008E},
 pages = {98--99},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {Suzaku Observation of the Radio Halo Cluster Abell 2319: Hard X-ray Properties and Gas Dynamics},
 volume = {JAXA-SP-09-008E},
 year = {2010}
}