34 citations · 317 across the 28 of their papers we have counts for
15 papers · 1 filter
A small scale structure model of jet based on the observation of microvariability
Jingran Xu, Shaoming Hu, Xu Chen +2
We developed a multi-region radiation model for the evolution of flux and spectral index with time. In this model, each perturbation component in the jet produces an independent fl…
Exploration of the origin of 2020 X-ray outburst in OJ 287
Shifeng Huang, Shaoming Hu, Hongxing Yin +3
Research into OJ 287 has been ongoing for many years. In 2020 April-June, this source underwent the second highest X-ray outburst (second only to the 2016-2017 outburst) and the me…
The X-ray outburst of PG 1553+113: A precession effect of two jets in the supermassive black hole binary system
Shifeng Huang, Hongxing Yin, Shaoming Hu +4
Blazar PG 1553+113 is thought to be a host of supermassive black hole binary (SMBHB) system. A 2.2-year quasi-periodicity in the -ray light curve was detected, possibly result o…
Interpreting the variation phenomena of B2 1633+382 via the two-component model
Yifang Wang, Yunguo Jiang
Blazars are variable targets in the sky, whose variation mechanism remains an open question. In this work, we make a comprehensive study on the variation phenomena of the spectral…
A possible tidal disruption event candidate in the black hole binary system of OJ 287
Shifeng Huang, Shaoming Hu, Hongxing Yin +4
The BL Lacertae OJ 287 is a supermassive black holes binary (SMBHB) system with complex physics of its irregular flares. During 2016 October -- 2017 April period, a surprising outb…
A comprehensive study on the variation phenomena of AO 0235+164
Yifan Wang, Yunguo Jiang
The variation mechanism of blazars is a long standing open question. The polarization observation can provide us with more information to constrain models. In this work, we collect…
Curvature induced polarization and spectral index behavior for PKS 1502+106
Xi Shao, Yunguo Jiang, Xu Chen
A comprehensive study of multifrequency correlations can shed light on the nature of variation for blazars. In this work, we collect the long-term radio, optical and -ray light…
Statistical analysis of micro-variability properties of the blazar S5 0716+714
Jingran Xu, Shaoming Hu, James R. Webb +5
The typical blazar S5 0716714 is very interesting due to its rapid and large amplitude variability and high duty cycle of micro-variability in optical band. We analyze the obser…
Locations of optical and -ray emitting regions in the jet of PMN J2345-1555
Yun-Guo Jiang, Shao-Ming Hu, Xu Chen +2
We collect long term -ray, optical and radio GHz light curves of quasar object PMN J2345-1555. The correlation analyses between them are performed via the local cross-corre…
The Broad Band Spectral Energy Distributions of SDSS Blazars
Huaizhen Li, Luoen Chen, Yunguo Jiang +1
We compiled the radio, optical, and X-ray data of blazars from the Sloan Digital Sky Survey (SDSS) database, and presented the distribution of luminosities and broad band spectral…
Gamma-ray burst polarization via Compton scattering process
Zhe Chang, Hai-Nan Lin, Yunguo Jiang
Synchrotron radiation and Compton scattering are widely accepted as the most likely emission mechanisms of some astrophysical phenomena, such as gamma-ray bursts (GRBs) and active…
Polarization of photons scattered by electrons in any spectral distribution
Zhe Chang, Yunguo Jiang, Hai-Nan Lin
Based on the quantum electrodynamics, we present a generic formalism of the polarization for beamed monochromatic photons scattered by electrons in any spectral distribution. The f…
Gamma-ray polarization induced by cold electrons via Compton processes
Zhe Chang, Yunguo Jiang, Hai-Nan Lin
The polarization measurement is an important tool to probe the prompt emission mechanism in gamma-ray bursts (GRBs). The synchrotron photons can be scattered by cold electrons in t…
Constraining the Bulk Lorentz Factor of GRB Outflow in the Magnetic-dominated Jet Model
Zhe Chang, Hai-Nan Lin, Yunguo Jiang
Recent observations by the Fermi-LAT showed that there are delayed arrivals of GeV photons relative to the onset of MeV photons in some GRBs. In order to avoid a large optical dept…
A unified constraint on the Lorentz invariance violation from both short and long GRBs
Zhe Chang, Yunguo Jiang, Hai-Nan Lin
Possible Lorentz invariance violation (LIV) has been investigated for a long time based on observations of GRBs . These arguments relied on the assumption that photons with differe…