4 papers
First Observations of Solar Halo Gamma Rays Over a Full Solar Cycle
Tim Linden, Jung-Tsung Li, Bei Zhou +4
We analyze 15 years of Fermi-LAT data and produce a detailed model of the Sun's inverse-Compton scattering emission (solar halo), which is powered by interactions between ambient c…
Convection-Driven Multi-Scale Magnetic Fields Determine the Observed Solar-Disk Gamma Rays
Jung-Tsung Li, Mahboubeh Asgari-Targhi, John F. Beacom +1
The solar disk is a continuous source of GeV--TeV gamma rays. The emission is thought to originate from hadronic Galactic cosmic rays (GCRs) interacting with the gas in the photosp…
Are X-Ray Detected Active Galactic Nuclei in Dwarf Galaxies Gamma-Ray Bright?
Milena CrnogorÄeviÄ, Tim Linden, Annika H. G. Peter
The -ray emission from active galactic nuclei (AGN), including both beamed blazars and misaligned-AGN, dominates the extragalactic -ray point-source population count and fl…
Angular Distribution of Gamma Rays Produced in Proton-Proton Collisions
Spencer Griffith, John F. Beacom, Jung-Tsung Li +1
Accurate modeling of how high-energy proton-proton collisions produce gamma rays through the decays of pions and other secondaries is needed to correctly interpret astrophysical ob…