HESS J1507-622: an unique unidentified source off the Galactic Plane
Abstract
Galactic VHE gamma-ray sources in the inner Galaxy H.E.S.S. survey cluster within 1 deg in latitude around the Galactic plane. HESS J1507-622 instead is unique, since located at latitude of -3.5 degrees. No plausible counterparts have been detected; and, given its position and hence the absorption almost one order of magnitude lower, it is very surprising to not see any counterparts especially at X-rays. Its latitude implies that it is either within about 1 kpc or is located well off the Galactic plane. The models reflect the uniqueness of this object: a leptonic scenario would locate the source at very large distan- ces, while it would be very close in hadronic scenarios. The high sensitivity of XMM-Newton will shed light on the nature of this mysterious source.
- Publication:
-
XMM-Newton Proposal
- Pub Date:
- October 2009
- Bibcode:
- 2009xmm..prop...56T
- Keywords:
-
- White Dwarf Binaries;
- Neutron Star Binaries;
- Cataclysmic Variables;
- ULXs;
- Black Holes;
- HESSJ 1507-622