Detection of Gamma-Rays from the Protostellar Jet in the HH 80-81 System
Abstract
Considering that the existence of relativistic particles in the protostellar jet has been confirmed by the detection of linearly polarized radio emission from the HH 80-81 jet, we search for gamma-rays from the HH 80-81 system using ten-year Fermi-LAT observations. A significant point-like γ-ray excess is found in the direction of the HH 80-81 system with the Test-Statistic value >100, which is likely produced in the HH 80-81 jet. The γ-ray spectrum extends only to 1 GeV with a photon index of 3.5. No significant variability is found in the gamma-ray emission. It is discussed that the properties of HH 80-81 jet suffice for producing the observed γ-rays.
- Publication:
-
Research in Astronomy and Astrophysics
- Pub Date:
- February 2022
- DOI:
- 10.1088/1674-4527/ac3fad
- arXiv:
- arXiv:1908.10994
- Bibcode:
- 2022RAA....22b5016Y
- Keywords:
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- gamma-rays: ISM;
- ISM: jets and outflows;
- radiation mechanisms: non-thermal;
- stars: protostars;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- Research in Astronomy and Astrophysics, Volume 22, Issue 2, id.025016