369 citations · 2.7k across the 37 of their papers we have counts for
40 papers
Fermi detection of -rays from the radio-quiet Seyfert galaxy NGC 3281
Jun-Rong Liu, Hua Feng, Jian-Min Wang
We report the detection of significant -ray emission with -LAT from the radio-quiet Seyfert 2 galaxy NGC 3281, with a luminosity of $5.9\,(\pm 1.7)\times10^{41}\rm\,e…
Optical emission from luminous and very soft X-ray sources in nearby galaxies: testing the scenario of edge-on supercritical accretion systems
Xiaohong Tang, Hua Feng
Supercritical accretion onto compact objects is expected to drive optically thick winds, resulting in observed X-ray emission as a function of viewing angle. However, their optical…
Fast Transitions of X-ray Variability in the Neutron Star Low Mass X-ray Binary Cygnus X-2
Liang Zhang, Mariano Méndez, Hua Feng +12
We present a spectral-timing analysis of two NICER observations of the weakly magnetized neutron star low-mass X-ray binary Cygnus X-2. During these observations, we detect a rapid…
A Relativistic Jet in the Radio Quiet AGN Mrk 110
Ailing Wang, Tao An, Kenneth I. Kellermann +4
We report the discovery of a relativistic jet in Mrk~110, a narrow-line Seyfert 1 galaxy historically classified as a radio-quiet active galactic nucleus (AGN). Very Long Baseline…
A Phase-resolved View of Millihertz Quasi-periodic Oscillations in the Ultraluminous X-ray Source M51 ULX-7: Evidence for a Magnetically Truncated Disk and Geometrical Beaming
Qingcang Shui, Shu Zhang, Hua Feng +3
X-ray quasi-periodic oscillations (QPOs) are commonly observed in Galactic X-ray binaries (XRBs) and extragalactic ultraluminous X-ray sources (ULXs). In this study, we perform a p…
Discovery of Rapid Polarization Angle Variation During the 2022 Outburst of XTE J1701-462
QingChang Zhao, Hong Li, Lian Tao +1
The geometry of the Comptonization corona in neutron star low-mass X-ray binaries is still unclear. We conducted time-resolved polarimetric analysis of the archival observations of…