Evidence for Extended High Energy Gamma-Ray Emission from the Rosette/Monoceros Region

Details Evidence for Extended High Energy Gamma-Ray Emission from the Rosette/Monoceros Region Evidence for Extended High Energy Gamma-Ray Emission from the Rosette/Monoceros Region

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...484l.129j&link_type=abstract

Astrophysical Journal Letters v.484, p.L129

Astronomy and Astrophysics

Astronomy

13

Gamma Rays: Observations, Ism: Supernova Remnants

Scientific paper

We present an image reconstruction of the region around the Rosette Nebula and Monoceros Supernova Remnant (SNR) using high-energy (>100 MeV) gamma -ray data from EGRET. The method uses a multiresolution support and wavelet-based noise-suppression algorithm that looks for extended structure in addition to pointlike features (Murtagh et al.). 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 Monoceros 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 Monoceros remnant and the Rosette Nebula.

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