output
19932026
Showing 2014 · astro-ph.HEShow all

25 papers · 2 filters

astro-ph.HE2014★ 19 cited

On frequency dependence of pulsar linear polarization

P. F. Wang, C. Wang, J. L. Han

Frequency dependence of pulsar linear polarization is investigated by simulations of emission and propagation processes. Linearly polarized waves are generated through curvature ra…

astro-ph.HE2014★ 44 cited

Universal scaling of the 3:2 twin-peak quasi-periodic oscillation frequencies with black hole mass and spin revisited

Xin-Lin Zhou, Weimin Yuan, Hai-Wu Pan +1

We discuss further observational support of an idea formulated a decade ago by Abramowicz, Klu{ź}niak, McClintock and Remillard. They demonstrated that the 3:2 pairs of frequencies…

astro-ph.HE2014★ 13 cited

An Unobscured type II quasar candidate: SDSS J012032.19-005501.9

Y. Li, W. Yuan, H. Y. Zhou +4

We report the finding of an unobscured type II Active Galactic Nuclei (AGN) candidate, SDSS J012032.19-005501.9 at a relatively high redshift of 0.601,which shows a number of unusu…

astro-ph.HE2014★ 4 cited

Spectra of cosmic ray electrons and diffuse gamma rays with the constraints of AMS-02 and HESS data

Ding Chen, Jing Huang, Hong-Bo Jin

Recently, AMS-02 reported their observed results of cosmic rays(CRs). In addition to the AMS-02 data, we add HESS data to estimate the spectra of CR electrons and the diffuse gamma…

astro-ph.HE2014★ 21 cited

Relativistic Fe K Line Revealed in the Composite X-ray Spectrum of Narrow Line Seyfert 1 Galaxies --- do their black holes have averagely low or intermediate spins?

Zhu Liu, Weimin Yuan, Youjun Lu +1

While a broad profile of the Fe K emission line is frequently found in the X-ray spectra of typical Seyfert galaxies, the situation is unclear in the case of Narrow Line Seyfert…

astro-ph.HE2014★ 3 cited

On the Black Hole Masses In Ultra-luminous X-ray Sources

Xin-Lin Zhou

Ultra-luminous X-ray sources (ULXs) are off-nuclear X-ray sources in nearby galaxies with X-ray luminosities 10 erg s. The measurement of the black hole (BH) m…

astro-ph.HE2014★ 44 cited

Photosphere emission in the X-Ray Flares of Swift Gamma-Ray Bursts and Implications for the Fireball Properties

Fang-Kun Peng, En-Wei Liang, Xiang-Yu Wang +5

X-ray flares of gamma-ray bursts (GRBs) are usually observed in the soft X-ray range and the spectral coverage is limited. In this paper, we present an analysis of 32 GRB X-ray fla…

astro-ph.HE2014★ 3 cited

The Optical Luminosity Function of Gamma-ray Bursts deduced from ROTSE-III Observations

X. H. Cui, X. F. Wu, J. J. Wei +16

We present the optical luminosity function (LF) of gamma-ray bursts (GRBs) estimated from a uniform sample of 58 GRBs from observations with the Robotic Optical Transient Search Ex…

astro-ph.HE2014★ 95 cited

SN2014J gamma-rays from the 56Ni decay chain

Roland Diehl, Thomas Siegert, Wolfgang Hillebrandt +7

The measurement of gamma-ray lines from the decay chain of 56Ni provides unique information about the explosion in supernovae. The 56Ni freshly-produced in the supernova powers the…

astro-ph.HE2014★ 5 cited

Singlet pairing gaps of neutrons and protons in hyperonic neutron stars

Yan Xu, Cheng-Zhi Liu, Cun-Bo Fan +5

The nucleonic superfluids are investigated within the relativistic mean-field model and Bardeen-Cooper-Schrieffer theory in hyperonic neutron stars. The pai…

astro-ph.HE2014★ 36 cited

A New Approach to Constrain Black Hole Spins in Active Galaxies Using Optical Reverberation Mapping

Jian-Min Wang, Pu Du, Yan-Rong Li +3

A tight relation between the size of the broad-line region (BLR) and optical luminosity has been established in about 50 active galactic nuclei studied through reverberation mappin…

astro-ph.HE2014★ 140 cited

Supermassive black holes with high accretion rates in active galactic nuclei: II. the most luminous standard candles in the Universe

Jian-Min Wang, Pu Du, Chen Hu +7

This is the second in a series of papers reporting on a large reverberation mapping (RM) campaign to measure black hole (BH) mass in high accretion rate active galactic nuclei (AGN…

astro-ph.HE2014★ 1 cited

Numerical Simulation of Radio Signal from Extended Air Showers

Wei Liu, Xuelei Chen

The burst of radio emission by the extensive air shower provides a promising alternative for detecting ultra-high energy cosmic rays.We have developed an independent numerical prog…

astro-ph.HE2014★ 22 cited

Distributions of Gamma-Ray Bursts and Blazars in the Plane and Possible Implications for their Radiation Physics

Fen Lyu, En-Wei Liang, Yun-Feng Liang +5

We present a spectral analysis for a sample of redshift known GRBs observed with {\em Fermi}/GBM. Together with the results derived from our systematical spectral energy distributi…

astro-ph.HE2014★ 13 cited

The Magneto Hydro Dynamical Model of KHz Quasi Periodic Oscillations in Neutron Star Low Mass X-ray Binaries (II)

Chang-Sheng Shi, Shuang-Nan Zhang, Xiang-Dong Li

We study the kilohertz quasi-periodic oscillations (kHz QPOs) in neutron star low mass X-ray binaries (LMXBs) with a new magnetohydrodynamics (MHD) model, in which the compressed m…

astro-ph.HE2014★ 42 cited

Jet Properties of GeV-Selected Radio-Loud Narrow-Line Seyfert 1 Galaxies and Possible Connection to Their Disk and Corona

Xiao-Na Sun, Jin Zhang, Da-Bin Lin +3

The observed spectral energy distributions of five GeV-selected narrow-line Seyfert 1 (NLS1) galaxies are fitted with a model including the radiation ingredients from the relativis…

astro-ph.HE2014★ 17 cited

Hard X-ray emission and Ti line features of Tycho Supernova Remnant

Wei Wang, Zhuo Li

A deep hard X-ray survey of the INTEGRAL satellite first detected the non-thermal emission up to 90 keV in the Tycho supernova (SN) remnant. Its 3 -- 100 keV spectrum is fitted wit…

astro-ph.HE2014★ 10 cited

TeV cosmic-ray proton and helium spectra in the myriad model II

Wei Liu, Pierre Salati, Xuelei Chen

Recent observations show that the cosmic ray nuclei spectra start to harden above 100 GeV, in contradiction with the conventional steady-state cosmic ray model. We had suggested th…

astro-ph.HE2014★ 119 cited

A milliparsec supermassive black hole binary candidate in the galaxy SDSS J120136.02+300305.5

F. K. Liu, Shuo Li, S. Komossa

Galaxy mergers play a key role in the evolution of galaxies and the growth of their central supermassive black holes (SMBHs). A search for (active) SMBH binaries (SMBHBs) at the ce…

astro-ph.HE2014★ 77 cited

Intrinsic -ray luminosity, black hole mass, jet and accretion in Fermi blazars

Dingrong Xiong, Xiong Zhang

We have analyzed a large sample of clean blazars detected by Fermi Large Area Telescope (LAT). Using literature and calculation, we obtained intrinsic -ray luminosity excluding…

astro-ph.HE2014★ 19 cited

Polarized Curvature Radiation in Pulsar Magnetosphere

P. F. Wang, C. Wang, J. L. Han

The propagation of polarized emission in pulsar magnetosphere is investigated in this paper. The polarized waves are generated through curvature radiation from the relativistic par…

astro-ph.HE2014★ 9 cited

Cross-correlations between soft and hard light curves depending on luminosity in the transient neutron star XTE J1701-462

Ya-Nan Wang, Ya-Juan Lei, Guo-Qiang Ding +5

Using all the observations from Rossi X-ray Timing Explorer for accreting neutron star XTE J1701-462, we carry out a systematic study on the cross-correlation between its soft and…

astro-ph.HE2014★ 10 cited

X-ray Scattered Halo around IGR J17544-2619

Junjie Mao, Zhixing Ling, Shuang-Nan Zhang

X-ray photons coming from an X-ray point source not only arrive at the detector directly, but also can be strongly forward-scattered by the interstellar dust along the line of sigh…

astro-ph.HE2014★ 14 cited

Detecting Radio Afterglows of Gamma-Ray Bursts with FAST

Zhi-Bin Zhang, Si-Wei Kong, Yong-Feng Huang +2

Using the generic hydrodynamic model of Gamma-Ray Burst (GRB) afterglows, we calculate the radio afterglow light curves of low luminosity, high luminosity, failed and standard GRBs…