Chandra Observation of a Gamma-ray Emitting SNR, W44

Details Chandra Observation of a Gamma-ray Emitting SNR, W44 Chandra Observation of a Gamma-ray Emitting SNR, W44

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2832t&link_type=abstract

Chandra proposal ID #11500537

Physics

Scientific paper

We propose to study a mixed-morphology SNR W44, where a gamma-ray source was detected in a close vicinity by EGRET. Recent observations by Fermi have revealed that position and morphology of the gamma-ray source is similar to those of radio and IR, suggesting that the gamma-rays are of hadronic origin and originate in shocked molecular clouds. We propose here to observe the northern part of the SNR, from which Fermi detected strong gamma-ray emission. This is the first on-axis observation of this region by Chandra, which enables us to study the X-ray morphology of the gamma-ray emitting region with the superb angular resolution. Our aim is to detect non-thermal emission (presumably proton or electron bremsstrahlung) and to constrain the emission model for the gamma-ray emission.

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