The XIX International Conference on Topics in Astroparticle and Underground Physics (TAUP2025)

Gamma-ray detection consistent with a young stellar object

28 Aug 2025, 15:07

17m

Conference Room F1-R2

Oral High-Energy Astrophysics and Cosmic Rays High-Energy Astrophysics and Cosmic Rays

Speaker

P. H. Thomas Tam (Sun Yat-sen University)

Description

Jets from protostellar have recently been reported to have the capability to accelerate particles to relativistic energy, emitting gamma photons that can be detected by the Fermi-LAT. Some protostellars have also been reported to have observed non-thermal jet lobes in radio band, confirming the presence of non-thermal processes within the jets. We analyzed the 16 years of Fermi-LAT data surrounding RAFGL 490, a protostellar object relatively close to the Earth with non-thermal jets. We have detected an excess of gamma radiation near this protostellar, and discussed the possible origin of the gamma ray emission.