Dark matter and Modified Newtonian Dynamics in a sample of high-redshift galaxy clusters observed with Chandra http://arxiv.org/abs/0907.2279 ・Modified Newtonian Dynamics (MOND) 使ってcluster massを計算 ・MONDの場合でも、gas mass ・MONDの…

Constraints on the multi-TeV particle population in the Coma Galaxy Cluster with H.E.S.S. observations http://arxiv.org/abs/0907.0727・ComaをH.E.S.S.で観測 ・有意な検出なし、Flux upper limit導出 ・Thermal/Non-thermalの比に制限をつけた