Ang Li

Hyperon stars at finite temperature in the Brueckner theory

European Science Foundation; National Basic Research Program of China [2009CB824800]; National Natural Science Foundation of China [10905048]; Youth Innovation Foundation of Fujian Province [2009J05013]

FAST RADIO BURSTS AND THEIR GAMMA-RAY OR RADIO AFTERGLOWS AS KERR–NEWMAN BLACK HOLE BINARIES

Fast radio bursts (FRBs) are radio transients lasting only about a few milliseconds. They seem to occur at cosmological distances. We propose that these events can be originated in the collapse of the magnetosphere of Kerr-Newman black holes (KNBHs). We show that the closed orbits of charged particles in the magnetosphere of these objects are unstable. After examining the dependencies on the specific charge of the particle and the spin and charge of the KNBH, we conclude that the resulting timescale and radiation mechanism fit well with the extant observations of FRBs. Furthermore, we argue that the merger of a KNBH binary is one of the plausible central engines for potential gamma-ray or radio afterglow following a certain FRBs, and can also account for gravitational wave (GW) events like GW 150914. Our model leads to predictions that can be tested by combined multi-wavelength electromagnetic and GW observations.

Internal x-ray plateau in short GRBs: Signature of supramassive fast-rotating quark stars?

A supramassive, strongly-magnetized millisecond neutron star (NS) has been proposed to be the candidate central engine of at least some short gamma-ray bursts (SGRBs), based on the internal plateau commonly observed in the early X-ray afterglow. While a previous analysis shows a qualitative consistency between this suggestion and the Swift SGRB data, the distribution of observed break time

Too massive neutron stars: The role of dark matter?

t_b

Hot nuclear matter equation of state with a three-body force

is much narrower than the distribution of the collapse time of supramassive NSs for the several NS equations-of-state (EoSs) investigated. In this paper, we study four recently-constructed unified NS EoSs, as well as three developed strange quark star (QS) EoSs within the new confinement density-dependent mass model. All the EoSs chosen here satisfy the recent observational constraints of the two massive pulsars whose masses are precisely measured. We construct sequences of rigidly rotating NS/QS configurations with increasing spinning frequency

Nuclear three-body force effect on a kaon condensate in neutron star matter

f

VERTICAL CONVECTION IN NEUTRINO-DOMINATED ACCRETION FLOWS

, from non-rotating (

Massive hybrid stars with a first-order phase transition

f = 0

Protoneutron stars in the Brueckner-Hartree-Fock approach and finite-temperature kaon condensation

) to the Keplerian frequency (

Revisiting the hot matter in the center of gamma-ray bursts and supernovae

f = f_{rm K}