4 papers
GeV γ-ray emission in the star-forming region S140
Li-Nuo Yang, Pak-Hin Thomas Tam
We report the detection of a GeV γ-ray source in the S140 HII region using 17.75 years of Fermi-LAT data, with a source-detection significance of ~32.1σ in the 0.1-500 GeV energy b…
GeV γ-ray emission in the low-mass star-forming region AFGL 490
Li-Nuo Yang, Sheng Tang, Pak-Hin Thomas Tam
We report the discovery of an extended GeV γ-ray source, 4FGL J0330.7+5845e, associated with the star-forming region AFGL 490 using 17 years of Fermi-LAT data. The emission is spa…
Identifying Merger-Driven and Collapsar-Driven Gamma-Ray Bursts with Precursor based Solely on Prompt Emission
Si-Yuan Zhu, Pak-Hin Thomas Tam, Fu-Wen Zhang +2
Gamma-ray bursts (GRBs) are generally classified as Type~I GRBs, which originate from compact binary mergers, and Type~II GRBs, which originate from massive collapsars. The traditi…
GeV gamma-ray emission in the field of the shell-type supernova remnant Vela Jr revisited
Ting-Ting Ge, Qi-Hang Wu, Pak-Hin Thomas Tam +4
We present an updated analysis of the gigaelectronvolt (GeV) gamma-ray emission from the shell-type supernova remnant (SNR) RX J0852.0-4622 (Vela Jr) using 15 yr of Fermi Large Are…