Journal•ISSN: 1009-9271
Chinese Journal of Astronomy and Astrophysics
IOP Publishing
About: Chinese Journal of Astronomy and Astrophysics is an academic journal. The journal publishes majorly in the area(s): Pulsar & Galaxy. It has an ISSN identifier of 1009-9271. Over the lifetime, 804 publications have been published receiving 7808 citations.
Topics: Pulsar, Galaxy, Gamma-ray burst, Neutron star, Active galactic nucleus
Papers
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TL;DR: In this article, the authors review the rapid observational and theoretical progress in this dynamical research field during the first two-year of the Swift mission, focusing on how observational breakthroughs have revolutionized our understanding of the physical origins of GRBs.
Abstract: Since the successful launch of NASA's dedicated gamma-ray burst (GRB) mission, Swift, the study of cosmological GRBs has entered a new era. Here I review the rapid observational and theoretical progress in this dynamical research field during the first two-year of the Swift mission, focusing on how observational breakthroughs have revolutionized our understanding of the physical origins of GRBs. Besides summarizing how Swift helps to solve some pre-Swift mysteries, I also list some outstanding problems raised by the Swift observations. An outlook of GRB science in the future, especially in the GLAST era, is briefly discussed.
514 citations
TL;DR: In this article, the authors summarize some of the relevant results obtained with the Italian satellite BeppoSAX on the prompt and afterglow emission of Gamma Ray Bursts and discuss the most relevant open issues on these events.
Abstract: In this review paper I will summarize some of the relevant results obtained with the Italian satellite BeppoSAX on the prompt and afterglow emission of Gamma Ray Bursts. I will also discuss the most relevant open issues on these events.
251 citations
TL;DR: In this article, an exact analytical solution of the gravitational field equa- tions describing a static spherically symmetric anisotropic quark matter distribution was presented, where the radial pressure inside the star is assumed to obey a linear equation of state, while the tangential pressure is a complicated function of the radial coordinate.
Abstract: We present an exact analytical solution of the gravitational field equa- tions describing a static spherically symmetric anisotropic quark matter distribution. The radial pressure inside the star is assumed to obey a linear equation of state, while the tangential pressure is a complicated function of the radial coordinate. In order to obtain the general solution of the field equations a particular density profile inside the star is also assumed. The anisotropic pressure distribution leads to an increase in the maximum radius and mass of the quark star, which in the present model is around three solar masses.
175 citations
TL;DR: In this paper, a project of a spectroscopic survey of the galaxy structure and evolution with a Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) is presented.
Abstract: A project of a spectroscopic surveyof Galactic structure and evolutionwith a Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) is presented. The spectro- scopic survey consists of two observational modes for various targets in our Galaxy. One is a major survey of the Milky Way aimed at a systematic study of the stellar abundance and Galactic chemical evolution through low resolution (R = 1000 − 2000) spectroscopy. Another is a follow-up observation with medium resolution (R = 10000) spectrographs aimed at detailedstudies of the selected stars with differentchemicalcomposition,kinematics and dynamics. The universe consists of millions of galaxies, in which there is a special one - the Milky Way - where all we stay. The Milky Way is also the subject most concerned by astronomers since it links our knowledge of stellar evolution and some important problems of formation of the universe. It can be used as an ideal laboratory for the studies of large scale structure of the Universe and gas distribution. We can observe more easily the various objects in the Milky Way than those in other galaxies. The modern study of the Milky Way by the method of star counting was started in late 19th century. Other galaxies were identified to be similar stellar systems as the Milky Way at beginning of 20th century. Considering that the Milky Way is a typical spiral galaxy in which our solar system is located, it is the best sample with which various theoretical models can be checked when we study the formation and evo- lution of the galaxies. The structure and chemical evolution of a galaxy can be represented by the different distribution and motion of the stars with different metallicities. There was no exciting progress in the field of Galactic study before 1980's due to the lack of sufficient observational data. Thanks to the rapid development of high resolution spectrographs and some large scale
144 citations
TL;DR: In this paper, a short-lived supermassive magnetar model was proposed to account for the X-ray flares following short γ-ray bursts, in which the central engine of the short gamma ray bursts is a supermassive millisecond magnetar, formed in coalescence of double neutron stars.
Abstract: We suggest a short-lived supermassive magnetar model to account for the X-ray flares following short γ-ray bursts. In this model the central engine of the short γ-ray bursts is a supermassive millisecond magnetar, formed in coalescence of double neutron stars. The X-ray flares are powered by the dipole radiation of the magnetar. When the magnetar has lost a significant part of its angular momentum, it collapses to a black hole and the X-ray flares cease abruptly.
131 citations