85 citations · 252 across the 15 of their papers we have counts for
15 papers
X-ray Polarimetry of the accreting pulsar 1A~0535+262 in the supercritical state with PolarLight
Xiangyun Long, Hua Feng, Hong Li +25
The X-ray pulsar 1A 0535+262 exhibited a giant outburst in 2020, offering us a unique opportunity for X-ray polarimetry of an accreting pulsar in the supercritical state. Measureme…
A significant detection of X-ray Polarization in Sco X-1 with PolarLight and constraints on the corona geometry
Xiangyun Long, Hua Feng, Hong Li +23
We report the detection of X-ray polarization in the neutron star low mass X-ray binary Scorpius (Sco) X-1 with PolarLight. The result is energy dependent, with a non-detection in…
GRB 210121A: A Typical Fireball Burst Detected by Two Small Missions
Xiangyu Ivy Wang, Xutao Zheng, Shuo Xiao +48
The Chinese CubeSat Mission, Gamma Ray Integrated Detectors (GRID), recently detected its first gamma-ray burst, GRB 210121A, which was jointly observed by the Gravitational wave h…
X-ray polarimetry of the Crab nebula with PolarLight: polarization recovery after the glitch and a secular position angle variation
Xiangyun Long, Hua Feng, Hong Li +24
We report follow-up observations of the Crab nebula with the PolarLight X-ray polarimeter, which revealed a possible variation in polarization associated with a pulsar glitch in 20…
Discrimination of background events in the PolarLight X-ray polarimeter
Jiahuan Zhu, Hong Li, Hua Feng +22
PolarLight is a space-borne X-ray polarimeter that measures the X-ray polarization via electron tracking in an ionization chamber. It is a collimated instrument and thus suffers fr…
Modeling the in-orbit background of PolarLight
Jiahui Huang, Hua Feng, Hong Li +23
PolarLight is a gas pixel X-ray polarimeter mounted on a CubeSat, which was launched into a Sun-synchronous orbit in October 2018. We build a mass model of the whole CubeSat with t…
Re-detection and a Possible Time Variation of Soft X-ray Polarisation from the Crab
Hua Feng, Hong Li, Xiangyun Long +24
The Crab nebula is so far the only celestial object with a statistically significant detection in soft x-ray polarimetry, a window that has not been explored in astronomy since the…
In-orbit Operation and Performance of the CubeSat Soft X-ray Polarimeter PolarLight
Hong Li, Xiangyun Long, Hua Feng +21
PolarLight is a compact soft X-ray polarimeter onboard a CubeSat, which was launched into a low-Earth orbit on October 29, 2018. In March 2019, PolarLight started full operation, a…
Performances of a prototype point-contact germanium detector immersed in liquid nitrogen for light dark matter search
H. Jiang, L. T. Yang, Q. Yue +70
The CDEX-10 experiment searches for light weakly-interacting massive particles, a form of dark matter, at the China JinPing underground laboratory, where approximately 10 kg of ger…
Electron Track Reconstruction and Improved Modulation for Photoelectric X-ray Polarimetry
Tenglin Li, Ming Zeng, Hua Feng +7
The key to photoelectric X-ray polarimetry is the determination of the emission direction of photoelectrons. Because of the low mass of an electron, the ionisation trajectory is no…
LAMP: a micro-satellite based soft X-ray polarimeter for astrophysics
Rui She, Hua Feng, Fabio Muleri +19
The Lightweight Asymmetry and Magnetism Probe (LAMP) is a micro-satellite mission concept dedicated for astronomical X-ray polarimetry and is currently under early phase study. It…
A Transmissive X-ray Polarimeter Design For Hard X-ray Focusing Telescopes
Hong Li, Hua Feng, Jianfeng Ji +11
The X-ray Timing and Polarization (XTP) is a mission concept for a future space borne X-ray observatory and is currently selected for early phase study. We present a new design of…
Single-Epoch Black Hole Mass Estimators For Broad-Line Active Galactic Nuclei: Recalibrating Hbeta with A New Approach
Hua Feng, Yue Shen, Hong Li
Based on an updated Hbeta reverberation mapping (RM) sample of 44 nearby active galactic nuclei (AGN), we propose a novel approach for black hole (BH) mass estimation using two fil…
Waveform Digitizing for LaBr/NaI Phoswich Detector
She Rui, Ji Jian-Feng, Feng Hua +2
The detection efficiency of phoswich detector starts to decrease when Compton scattering becomes significant. Events with energy deposit in both scintillators, if not rejected, are…
A Large Area LaBr3/NaI Phoswich for Hard X-ray Astronomy
Hong Li, Jianfeng Ji, Hua Feng +2
In terms of energy resolution, temporal response to burst events, and thermal stability, lanthanum bromide doped with Ce is a much better choice than the traditional NaI(Tl) scinti…