86 citations · 518 across the 14 of their papers we have counts for
14 papers
A unified model of active repeating fast radio bursts associated with persistent radio sources
F. Y. Wang, H. T. Lan, Z. Y. Zhao +5
Fast radio bursts (FRBs) are intense pulses with unknown origins. A subclass of repeating FRBs show some common features, such as associated compact persistent radio sources (PRSs)…
Condensate dark matter stars
X. Y. Li, T. Harko, K. S. Cheng
We investigate the structure and stability properties of compact astrophysical objects that may be formed from the Bose-Einstein condensation of dark matter. Once the critical temp…
Modelling the light curves of PSR B1259-63/LS 2883-II.The effects of anisotropic pulsar wind and Doppler-boosting
S. W. Kong, K. S. Cheng, Y. F . Huang
PSR B1259-63/LS 2883 is a binary system in which a 48-ms pulsar orbits around a Be star in a high eccentric orbit with a long orbital period of about 3.4 yr. It is special for havi…
Internal shock model for the X-ray flares of Swift J1644+57
F. Y. Wang, K. S. Cheng
Swift J1644+57 is an unusual transient event, likely powered by the tidal disruption of a star by a massive black hole. There are multiple short timescales X-ray flares were seen o…
Modeling the multi-wavelength light curves of PSR B1259-63/SS 2883
S. W. Kong, Y. W. Yu, Y. F. Huang +1
PSR B1259-63/SS 2883 is a binary system in which a 48-ms pulsar orbits around a Be star in a high eccentric orbit with a long orbital period of about 3.4 yr. Extensive broadband ob…
Inflating wormholes in the braneworld models
K. C. Wong, T. Harko, K. S. Cheng
The braneworld model, in which our Universe is a three-brane embedded in a five-dimensional bulk, allows the existence of wormholes, without any violation of the energy conditions.…
Exploring the dark accelerator HESS J1745-303 with Fermi Large Area Telescope
C. Y. Hui, E. M. H. Wu, J. H. K. Wu +4
We present a detailed analysis of the gamma-ray emission from HESS J1745-303 with the data obtained by the Fermi Gamma-ray Space Telescope in the first ~29 months observation.The s…
GRB afterglows: deep Newtonian phase and its application
Y. F. Huang, T. Lu, K. S. Cheng
Gamma-ray burst afterglows have been observed for months or even years in a few cases. It deserves noting that at such late stages, the remnants should have entered the deep Newton…
Unified Classical and Quantum Radiation Mechanism for Ultra-Relativistic Electrons in Curved and Inhomogeneous Magnetic Fields
T. Harko, K. S. Cheng
We analyze the general radiation emission mechanism from a charged particle moving in a curved inhomogeneous magnetic field. The consideration of the gradient makes the curved vacu…
Pulsar Timing at Urumqi Astronomical Observatory: Observing System and Results
N. Wang, R. N. Manchester, J. Zhang +5
A pulsar timing system has been operating in the 18-cm band at the Urumqi Astronomical Observatory 25-m telescope since mid-1999. Frequency resolution allowing dedispersion of the…
Collapsing strange quark matter in Vaidya geometry
T. Harko, K. S. Cheng
Exact solutions of the gravitational field equations for a mixture of a null charged strange quark fluid and radiation are obtained in a Vaidya space-time. The conditions for the f…
The formation and merger of compact objects in central engine of active galactic nuclei and quasars: gamma-ray burst and gravitational radiation
K. S. Cheng, Jian-Min Wang
The production rate of compact objects, i.e. neutron stars (NS) and black holes (BH), in active galactic nuclei (AGN) and quasars (QSO), where the frequent supernova explosion is u…
A Possible Energy Mechanism for Cosmological Gamma-ray Bursts
K. S. Cheng, Y. Lu
We suggest that an extreme Kerr black hole with a mass , a dimensionless angular momentum and a marginal stable orbital radius $r_{ms}\sim 3r_s\sim 10^{…
Is GRO J1744-28 a Strange Star?
K. S. Cheng, Z. G. Dai, D. M. Wei +1
The unusal hard x-ray burster GRO J1744-28 recently discovered by the Compton Gamma-ray Observatory (GRO) can be modeled as a strange star with a dipolar magnetic field $\le 10^{11…