Diffuse <i>γ</i>-ray emission toward the massive star-forming region, W40
Diffuse <i>γ</i>-ray emission toward the massive star-forming region, W40
We report the detection of high-energy gamma-ray signal towards the young star-forming region, W40. Using 10-year Pass 8 data from the Fermi Large Area Telescope (Fermi-LAT), we extracted an extended gamma-ray excess region with a significance of about 18sigma. The radiation has a spectrum with a photon index of 2.49 …