54 citations · 309 across the 24 of their papers we have counts for
24 papers
Shear Particle Acceleration in Structured Gamma-Ray Burst Jets: IV. Thermal {\em vs.} Non-thermal Emission of the Jet Cocoon
Zi-Qi Wang, Xiao-Li Huang, Hai-Ming Zhang +1
A distinct thermal or quasi-thermal spectral component is occasionally observed in gamma-ray burst (GRB) prompt emission spectra. Taking GRB 090902B as a case study, we investigate…
Could the interaction of jet and SN ejecta be the cause of X-ray knots observed in a radio galaxy?
Jia-Chun He, Xiao-Na Sun, Hao-Qiang Zhang +4
We investigate the interaction between relativistic jets and supernova (SN) ejecta as a potential origin of X-ray knots in radio galaxies, employing knot A in M 87 as a test case.…
X-ray Emission Properties of a Compact Symmetric Object Sample
Ying-Ying Gan, Su Yao, Tan-Zheng Wu +2
We present a comprehensive analysis of the X-ray observations obtained from \xmm\, and \chandra\, for a sample of bona-fide Compact Symmetric Objects (CSOs) to investigate their X-…
Ultrahigh-Energy Gamma-ray Emission Associated with Black Hole-Jet Systems
The LHAASO Collaboration, Zhen Cao, Felix Aharonian +315
Black holes (BH), one of the most intriguing objects in the universe, can manifest themselves through electromagnetic radiation initiated by the accretion flow. Some stellar-mass B…
Two-Component gamma-ray Emission Spectrum and X-Ray Polarization of the Radio Galaxy Pictor A
Jia-Xuan Li, Xin-Ke Hu, Ji-Shun Lian +6
Pictor A is a -ray emitting radio galaxy and has a bright hotspot called WHS, located 4 arcmin away from the nucleus. In this work, we present an analysis of its 16-year F…
Origin of the Very High Energy γ-rays in the Low-luminosity Active Galactic Nucleus NGC 4278
Ji-Shun Lian, Jia-Xuan Li, Xin-Ke Hu +4
NGC 4278, a Low-luminosity active galactic nucleus (AGN), is generally classified as a low-ionization nuclear emission line region (LINER). Recently, it has been reported to be ass…
Fermi Large Area Telescope Detection of Gamma-Rays from NGC 6251 Radio Lobe
Yu-Wei Yu, Hai-Ming Zhang, Ying-Ying Gan +3
We report on the detection of extended -ray emission from lobes in the radio galaxy NGC 6251 using observation data of Fermi Large Area Telescope (Fermi-LAT). The maximum likeli…
Lobe-dominated gamma-ray Emission of Compact Symmetric Objects
Ying-Ying Gan, Hai-Ming Zhang, Xing Yang +2
The -ray emitting compact symmetric objects (CSOs) PKS 1718--649, NGC 3894, and TXS 0128+554 are lobe-dominated in the radio emission. In order to investigate their -ray radi…
Is TOL 1326-379 a Prototype of gamma-ray Emitting FR0 Radio Galaxy?
Fu Wen-Jing, Zhang Hai-Ming, Zhang Jin +3
With the possible spacial association to the Fermi/LAT source 3FGL J1330.0-3818, TOL 1326-379 may be the first one that is identified as a gamma-ray emitting Fanaroff-Riley type 0…
Highly Variable -Ray Emission of CTD 135 and Implications for its Compact Symmetric Structure
Ying-Ying Gan, Hai-Ming Zhang, Jin Zhang +4
The -ray emission properties of CTD 135, a typical compact symmetric object (CSO), are investigated with 11-year Fermi/LAT observations. We show that it has bright and sig…
Jet Properties of Compact Steep-Spectrum Sources and an Eddington-Ratio-Driven Unification Scheme of Jet Radiation in Active Galactic Nuclei
Jin Zhang, Hai-Ming Zhang, Ying-Ying Gan +3
Compact steep-spectrum sources (CSSs) likely represent a population of young radio-loud active galactic nuclei (AGNs) and have been identified as gamma-ray emitting sources. We pre…
Diversity of gamma-ray and Radio Variabilities of Bright Blazars and Implications for gamma-ray Emission Location
Hai-Ming Zhang, Zhen-Jie Wang, Jin Zhang +4
Violent multi-wavelength variabilities are observed in gamma-ray-selected blazars. We present an analysis of long-term light curves for eight bright blazars to explore the co-varia…
Precursors in Short Gamma-ray Bursts as a Possible Probe of Progenitors
Shu-Qing Zhong, Zi-Gao Dai, Ji-Gui Cheng +2
We extract 18 candidate short gamma-ray bursts (SGRBs) with precursors from 660 SGRBs observed by {\em Fermi} and {\em Swift} satellites, and carry out a comprehensive analysis on…
Jet Radiation Properties of 4C +49.22: from the Core to Large-Scale Knots
Jin Zhang, Hai-Ming Zhang, Su Yao +3
4C +49.22 is a gamma-ray flat spectrum radio quasar with a bright and knotty jet. We investigate the properties of the core and large-scale knots by using their spectral energy dis…
Characteristics of Two-episode Emission Patterns in {\em Fermi} Long Gamma-Ray Bursts
Lin Lan, Hou-Jun Lü, Shu-Qing Zhong +8
Two-episode emission components separated by quiescent gaps in the prompt emission of gamma-ray bursts (GRBs) have been observed in the {\em Swift} era, but there is a lack of spec…
GRB120729A: external shock origin for both the prompt gamma-ray emission and afterglow
Li-Ye Huang, Xiang-Gao Wang, WeiKang Zheng +7
Gamma-ray burst (GRB) 120729A was detected by Swift/BAT and Fermi/GBM, and then rapidly observed by Swift/XRT, Swift/UVOT, and ground-based telescopes. It had a single long and smo…
Fermi/LAT observations of Lobe-dominant Radio Galaxy 3C 207 and Possible Radiation Region of the Gamma-Rays
Sheng-Chu Guo, Hai-Ming Zhang, Jin Zhang +1
3C 207 is a lobe-dominant radio galaxy with one sided jet and the bright knots in kpc-Mpc scale were resolved in the radio, optical and X-ray bands. It was confirmed as a gamma-ray…
Examining High Energy Radiation Mechanisms of Knots and Hotspots in Active Galactic Nucleus Jets
Jin Zhang, Shen-shi Du, Sheng-Chu Guo +4
We compile the radio-optical-X-ray spectral energy distributions (SEDs) of 65 knots and 29 hotspots in 41 active galactic nucleus jets to examine their high energy radiation mechan…
Flux and Spectral Variation Characteristics of 3C 454.3 at the GeV Band
Hai-Ming Zhang, Jin Zhang, Rui-Jing Lu +3
We analyze the long-term lightcurve of 3C 454.3 observed with Fermi/LAT and investigate its relation to the flux in the radio, optical, and X-ray bands. By fitting the 1-day binned…
{\em Fermi}/GBM Short Gamma-ray Burst Catalog and Case Study for GRB 170817A/GW 170817
Rui-Jing Lu, Shen-Shi Du, Ji-Gui Cheng +4
Motivating by the discovery of association between GW 170817 and sGRB 170817A, we present a comprehensive analysis for sGRBs observed with Fermi/GBM in 9 operation years and study…
Multiple Wavelength Variability and Quasi-Periodic Oscillation of PMN J0948+0022
Jin Zhang, Hai-Ming Zhang, Yong-Kai Zhu +4
We present a comprehensive analysis of multiple wavelength observational data of the first GeV-selected narrow-line Seyfert 1 galaxy PMN J0948+0022. We derive its lightcurves in th…
Extremely bright GRB 160625B with multi-episodes emission: Evidences for long-term ejecta evolution
Hou-Jun Lü, Jing Lü, Shu-Qing Zhong +6
GRB 160625B is an extremely bright GRB with three distinct emission episodes. By analyzing its data observed with the GBM and LAT on board the {\em Fermi} mission, we find that a m…
Magnetar central engine and possible gravitational wave emission of nearby short GRB 160821B
Hou-Jun Lü, Hai-Ming Zhang, Shu-Qing Zhong +4
GRB 160821B is a short gamma-ray burst (GRB) at redshift , with a duration less than 1 second and without detection of any "extended emission" up to more than 100 seconds i…
Similarity of Jet Radiation between Flat Spectrum Radio Quasars and GeV Narrow-Line Seyfert 1 Galaxies: A Universal - Correlation
Yong-Kai Zhu, Jin Zhang, Hai-Ming Zhang +4
By modeling the broadband spectral energy distributions (SEDs) of a typical flat spectrum radio quasar (FSRQ, 3C 279) and two GeV narrow-line Seyfert 1 galaxies (NLS1s, PMN J0948+0…