HESS J1507-622 is one of the bright unidentified TeV objects. HESS J1507-622 is unique, since the location of the object is off the Galactic disk. We observed the HESS J1507-622 region with the Suzaku XIS, and found no obvious counterpart although there is no severe interstellar extinction. However, there are two interesting X-ray objects; SRC1 is a bright extended source, and SRC2 is a faint diffuse object. If either of them is a counterpart, the flux ratio between TeV and X-ray is large, and HESS J1507-622 is a real dark particle accelerator.
@article{arxiv.1407.6454,
title = {Suzaku Observation of HESS J1507-622},
author = {H. Matsumoto and Y. Terada and A. Bamba and M. Sakai and O. Tibolla and S. Kaufmann},
journal= {arXiv preprint arXiv:1407.6454},
year = {2014}
}