Exploring cosmic-ray acceleration environment in the SNR CTB37B

Although cosmic rays are accelerated at the shock front of supernova remnants(SNRs), condition for the particle accelation to occur is poorly understood. Oneof the ways to resolve this problem is to investigate thermal Xray emissionassociated with the acceleration site, because the thermal emission provides usthe information of the condistions. We propose XMMNewton of the SNR CTB37Bwhich has thermal, nonthermal Xray and TeV I?ray emission. Suzaku and Chandraobservations could not determine the parameters of the thermal plasma because ofthe contamination of a point source and of statistical limitation. Only goodspatial resolution and large effective area of XMMNewton enable us toinvestigate the thermal Xray emission. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]