Evidence for Extended High Energy Gamma Ray Emission from the
Rosette/Monoceros Region
T. Jaffe, D. Bhattacharya, D. D. Dixon, A. D. Zych
Astrophysical Journal Letters, 484, L129 (1997)
Abstract
We present an image reconstruction of the region around the Rosette Nebula and
Monoceros SNR using high energy (> 100 MeV) gamma-ray
data from the Energetic Gamma Ray Experiment Telescope (EGRET). The
method uses a multiresolution support and
wavelet-based noise suppression algorithm which looks for extended
structure in addition to point-like features.
The resulting image shows a 7 sigma extended feature in excess of the
expected diffuse emissions
located at the point source position listed in the EGRET Catalog. This feature
overlaps both the SNR and the nearby Rosette Nebula and
correlates with emission
at other wavelengths. The gamma-ray emission may be additional evidence of
an interaction between the remnant and the nebula.