4 papers
Discovery of -Ray Pulsations from the Extreme-Spin-Down Millisecond Pulsar PSR J0435+3233
Mengqing Zhang, Shengbin Pei, Pengfei Zhang
Motivated by the recent discovery of PSR~J0435+3233, a millisecond pulsar with an exceptionally large period derivative of and a high s…
Revisiting -Ray Orbital Modulation in the Redback Millisecond Pulsar PSR J2039-5617
Mengqing Zhang, Shengbin Pei, Shan Chang +1
PSR J2039-5617 is a redback millisecond pulsar binary system consisting of a compact star with a mass of 1.1-1.6 and a low-mass companion of 0.15-0.22 . For this…
Investigating the Potential of LS 5039 as a Triple System Using Fermi-LAT Data
Lujun Zeng, Mengqing Zhang, Chongyang Ren +2
LS 5039 is one of a handful of -ray binary systems in the Milky Way, comprising a pulsar and a massive O-type companion star with an orbital period of 3.9 day. Recently, we con…
A New Puzzling Periodic Signal in GeV Energies of the -Ray Binary LS I +61303
Pengfei Zhang
LS I + 61303 is a high-mass X-ray binary system comprising a massive Be star and a rapidly rotating neutron star. Its spectral energy distribution across multi-wavelengths…