X-ray observations of unidentified H.E.S.S. {gamma}-ray sources
In a survey of the inner part of the Galaxy, performed with the H.E.S.S. Instrument (High energy stereoscopic system) in 2004 and 2005, a large number of new unidentified very high energy (VHE) {gamma}-ray sources above an energy of 100 GeV was discovered. Often the {gamma}-ray spectra in these sources reach energies of up to {approx} 10 TeV These are the highest energy particles ever attributed to single astrophysical objects. While a few of these sources can be identified at other wavebands, most of these sources remain unidentified so far. A positive identification of these new {gamma}-ray sources with a counterpart object at other wavebands requires a) a positional coincidence between the two sources, b) a viable {gamma}-ray emission mechanism and c) a consistent multiwavelength behaviour of the two sources. X-ray observations with satellites such as XMM-Newton, Chandra or Suzaku provide one of the best channels to studying these enigmatic {gamma}-ray sources at other wavebands, since they combine high angular resolution and sensitivity with the ability to access non-thermal electrons through their synchrotron emission. We therefore have started a dedicated programme to investigate VHE {gamma}-ray sources with high-sensitivity X-ray instruments.
- OSTI ID:
- 21067239
- Journal Information:
- AIP Conference Proceedings, Vol. 921, Issue 1; Conference: 1. GLAST symposium, Stanford, CA (United States), 5-8 Feb 2007; Other Information: DOI: 10.1063/1.2757329; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA). H.E.S.S. Collaboration; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Probing the gamma-ray emission from HESS J1834–087 using H.E.S.S. and FermiLAT observations
XMM-Newton Observations Reveal the X-ray Counterpart of the Very-high-energy gamma-ray Source HESS J1640-465