Discovery of a point-like very-high-energy gamma-ray source in Monoceros
Abstract
The complex Monoceros Loop SNR/Rosette Nebula region contains several potential sources of very-high-energy (VHE) gamma-ray emission and two as yet unidentified high-energy EGRET sources. Sensitive VHE observations are required to probe acceleration processes in this region. The H.E.S.S. telescope array has been used to search for very high-energy gamma-ray sources in this region. CO data from the NANTEN telescope were used to map the molecular clouds in the region, which could act as target material for gamma-ray production via hadronic interactions. We announce the discovery of a new gamma-ray source, HESS J0632+058, located close to the rim of the Monoceros SNR. This source is unresolved by H.E.S.S. and has no clear counterpart at other wavelengths but is possibly associated with the weak X-ray source 1RXS J063258.3+054857, the Be-star MWC 148 and/or the lower energy gamma-ray source 3EG J0634+0521. No evidence for an associated molecular cloud was found in the CO data.
Keywords
Cite
@article{arxiv.0704.0171,
title = {Discovery of a point-like very-high-energy gamma-ray source in Monoceros},
author = {F. Aharonian},
journal= {arXiv preprint arXiv:0704.0171},
year = {2009}
}
Comments
5 pages, 4 figures, to appear in A&A