Search for Extended Sources in the Galactic Plane Above 10 GeV with Pass 8
J. M. Cohen
M. -H. Grondin, E. Hays, M. Lemoine-Goumard
Abstract:
Spatially resolving pulsar wind nebulae (PWNe) and supernova remnants (SNRs) at GeV energies is crucial to accurately representing their spectra, identifying mulitwavelength counterparts, and determining possible substrucure within the gamma-ray sources. Utilizing 6 years of Fermi-LAT Pass 8 data, we searched for extended sources above 10 GeV in the Galactic plane. The improved angular resolution and acceptance of the Pass 8 event reconstruction above 10 GeV significantly aids in accurately detecting source extension and assessing spectral and morphological properties of PWNe and SNRs. At this energy, we strike a balance between increased photon statistics and low diffuse background emission, and take advantage of the nearly constant Point Spread Function of the LAT to detect more than 30 significantly extended sources, a substantial fraction of them being completely new at GeV energies.
- Curator: J.D. Myers
- NASA Official: Phil Newman
- Science Official: Elizabeth Hays
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