HESS J1534-571\: XMM-Newton observations of an unusual new TeV SNR shell

All TeVemitting supernova remnant (SNR) shells that have been detected so farshow strong nonthermal Xray synchrotron emission, evidencing the presence ofsupraTeV electrons. Here, we propose to observe the Southern part of the newlyidentified TeV SNR shell HESS J1534571 with XMMNewton in an exploratory 30 kspointing, to pin down the Xray emission from the object. Previous Suzakupointings on the Northern part of the shell have revealed a surprisingly lowlevel of Xray synchrotron emission from this part of the object, which mayindicate that HESS J1534571 differs from the other known TeV SNRs andpotentially exhibits hadronic TeV emission. The proposed XMMNewton observationwill scrutinize this result before strong conclusions can be drawn. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]