Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Chinese Academy of SciencesCN5.9k papers
- University of Chinese Academy of SciencesCN2.2k papers
- Peking UniversityCN1.2k papers
- Centre National de la Recherche ScientifiqueFR759 papers
- Yunnan ObservatoriesCN679 papers
- Shanghai Astronomical ObservatoryCN633 papers
- Beijing Normal UniversityCN629 papers
- Purple Mountain ObservatoryCN616 papers
- Tsinghua UniversityCN578 papers
- Kavli Institute for Theoretical SciencesCN552 papers
- Nanjing UniversityCN462 papers
- Center for Astrophysics Harvard & SmithsonianUS455 papers
49 papers · 2 filters
Temporal Variations And Spectral Properties of Be/X-ray Pulsar GRO J1008-57 Studied by INTEGRAL
Wei Wang
Spin period variations and hard X-ray spectral properties of Be/X-ray pulsar GRO J1008-57 are studied with INTEGRAL observations. The pulsation periods at 93.66 s in 2004 and at 93…
Hard X-ray emission cutoff in anomalous X-ray pulsar 4U 0142+61 detected by INTEGRAL
Wei Wang, Hao Tong, Yan-Jun Guo
The anomalous X-ray pulsar 4U 0142+61 was studied by the INTEGRAL observations. The hard X-ray spectrum of 18 -- 500 keV for 4U 0142+61 was derived using near 9 years of INTEGRAL/I…
Numerical simulation of the electron capture process in a magnetar interior
Z. F. Gao, N. Wang, J. P. Yuan +2
In a superhigh magnetic field, direct Urca reactions can proceed for an arbitrary proton concentration. Since only the electrons with high energy (, is the threshold…
Evolution of superhigh magnetic fields of magnetars
Z. F. Gao, N. Wang, J. P. Yuan +3
In this paper, we consider the effect of Landau levels on the decay of superhigh magnetic fields of magnetars. Applying anisotropic neutron superfluid theory yield a seco…
Landau level-superfluid modified factor and effective X/-ray coefficient of a magnetar
Z. F. Gao, Q. H. Peng, N. Wang +2
As soon as the energy of electrons near the Fermi surface are higher than , the threshold energy of inverse decay, the electron capture process will dominate. The resulting…
Puzzling accretion onto a black hole in the ultraluminous X-ray source M101 ULX-1
Jifeng Liu, Joel N. Bregman, Yu Bai +2
There are two proposed explanations for ultraluminous X-ray sources (ULXs) with luminosities in excess of erg s. They could be intermediate-mass black holes (more…
Super-Eddington Accretion in the Ultraluminous X-ray Source NGC1313 X-2: An Ephemeral Feast
Shan-Shan Weng, Shuang-Nan Zhang, Hai-Hui Zhao
We investigate the X-ray spectrum, variability and the surrounding ionized bubble of NGC1313 X-2 to explore the physics of super-Eddington accretion. Beyond the Eddington luminosit…
A new method to analyse pulsar nulling phenomenon
A. Y. Yang, J. L. Han, N. Wang
Pulsar nulling is a phenomenon of sudden cessation of pulse emission for a number of periods. The nulling fraction was often used to characterize the phenomenon. We propose a new m…
The 72-Hour WEBT Microvariability Observation of Blazar S5 0716+714 in 2009
G. Bhatta, J. R. Webb, H. Hollingsworth +42
Context. The international whole earth blazar telescope (WEBT) consortium planned and carried out three days of intensive micro-variability observations of S5 0716+714 from Februar…
Fe K lines in the nuclear region of M82
Jiren Liu, Lijun Gou, Weimin Yuan +1
We study the spatial distribution of the Fe 6.4 and 6.7 keV lines in the nuclear region of M82 using the Chandra archival data with a total exposure time of 500 ks. The deep exposu…
Constraints on kHz QPO models and stellar EOSs from SAX J1808.4-3658, Cyg X-2 and 4U 1820-30
D. H. Wang, L. Chen, C. M. Zhang +2
We test the relativistic precession model (RPM) and the MHD Alfven wave oscillation model (AWOM) for the kHz QPOs by the sources with measured NS masses and twin kHz QPO frequencie…
Kinematics of massive star ejecta in the Milky Way as traced by 26Al
Karsten Kretschmer, Roland Diehl, Martin Krause +5
Massive stars form in groups and their winds and supernova explosions create superbubbles up to kpc in size. Their ejecta are important for the dynamics of the interstellar medium…
On the Relaxation Behaviors of Slow and Classical Glitches: Observational Biases and Their Opposite Recovery Trends
Yi Xie, Shuang-Nan Zhang
We study the pulsar timing properties and the data analysis methods during glitch recoveries. In some cases one first fits the time-of-arrivals (TOAs) to obtain the "time-averaged"…
Variability and spectral variation of 3C 66A
Shao Ming Hu, Jianghua Wu, H. Y. Guo +3
3C 66A was monitored by the BATC(Beijing-Arizona-Taipei-Connecticut) telescope from 2005 to 2008,1994 observations were obtained on 89 nights. Detailed research and analysis was pe…
The properties of cross-correlation and spectra of the low-mass X-ray binary 4U 1608-52
Ya-Juan Lei, Shu Zhang, Jin-Lu Qu +4
With {\it RXTE} data, we analyzed the cross-correlation function between the soft and hard X-rays of the transient atoll source 4U 1608-52. We found anti-correlations in three outb…
The effects of intense magnetic fields on Landau levels in a neutron star
Z. F. Gao, N. Wang, D. L. Song +2
In this paper, an approximate method of calculating the Fermi energy of electrons () in a high-intensity magnetic field, based on the analysis of the distribution of a ne…
The disk evaporation model for the spectral features of low-luminosity active galactic nuclei
Erlin Qiao, B. F. Liu, Francesca Panessa +1
Observations show that the accretion flows in low-luminosity active galactic nuclei (LLAGNs) probably have a two-component structure with an inner ADAF and an outer truncated accre…
Confirmation Via the Continuum-Fitting Method that the Spin of the Black Hole in Cygnus X-1 is Extreme
Lijun Gou, Jeffrey E. McClintock, Ronald A. Remillard +6
In Gou et al. (2011), we reported that the black hole primary in the X-ray binary Cygnus X-1 is a near-extreme Kerr black hole with a spin parameter a*>0.95(3σ). We confirm this re…
A double neutron star merger origin for the cosmological relativistic fading source PTF11agg?
Xue-Feng Wu, He Gao, Xuan Ding +3
The Palomar Transient Factory (PTF) team recently reported the discovery of a rapidly fading optical transient source, PTF11agg. A long-lived scintillating radio counterpart was id…
Modeling the Evolution and Distribution of the Frequency's Second Derivative and Braking Index of Pulsar Spin with Simulations
Yi Xie, Shuang-Nan Zhang
We model the evolution of spin frequency's second derivative and braking index of radio pulsars with simulations within the phenomenological model of their surface mag…
Radiation Mechanism and Jet Composition of Gamma-Ray Bursts and GeV-TeV selected Radio Loud Active Galactic Nuclei
Jin Zhang, En-Wei Liang, Xiao-Na Sun +3
Gamma-ray bursts (GRBs) and GeV-TeV selected radio loud Active Galactic Nuclei (AGNs) are compared based on our systematic modeling of the observed spectral energy distributions of…
A Comprehensive Study of Gamma-Ray Burst Optical Emission: III. Brightness Distributions and Luminosity Functions of Optical Afterglows
Xiang-Gao Wang, En-Wei Liang, Liang Li +3
We continue our systematic statistical study on optical afterglow data of gamma-ray bursts (GRBs). We present the apparent magnitude distributions of early optical afterglows at di…
Wavelength Measurements of K Transitions of Oxygen, Neon, and Magnesium with X-ray Absorption Lines
Jin-Yuan Liao, Shuang-Nan Zhang, Yangsen Yao
Accurate atomic transition data are important in many astronomical research areas especially in line spectroscopy study. Whereas transition data of He-like and H-like ions (i.e., i…
Relativistic Jet Properties of GeV-TeV Blazars and Possible Implications for the Jet Formation, Composition, and Cavity Kinematics
Jin Zhang, Xiao-Na Sun, En-Wei Liang +3
We fit the spectral energy distributions (SEDs) of a GeV-TeV FSRQ sample with the leptonic model. Their gamma_min of the relativistic electron distributions, which significantly af…