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相关论文: Do Gamma-Ray Burst Sources Repeat

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The observed spatial distribution of $\gamma-$ray bursts indicates that they probably originate at cosmological distances. At this distance scale their variability timescale and flux above MeV imply an initial optical-depth to pair…

天体物理学 · 物理学 2010-01-06 Abraham Loeb

We give an upper estimate for the number of gamma ray bursts from ordinary (non-superconducting) cosmic strings expected to be observed at terrestrial detectors. Assuming that cusp annihilation is the mechanism responsible for the bursts we…

高能物理 - 唯象学 · 物理学 2016-09-01 R. H. Brandenberger , A. T. Sornborger , M. Trodden

We place empirical constraints on the physical properties of $\gamma-$ray burst events at cosmological distances. In particular we derive probability distributions for the radiation energy $E_\gamma$, the minimum Lorentz factor $\gamma_{\rm…

天体物理学 · 物理学 2016-08-30 Eric Woods , Abraham Loeb

Fast Radio Bursts (FRBs) are the short, strong radio pulses lasting several milliseconds. They are subsequently identified, for the most part, as emanating from unknown objects at cosmological distances. At present, over one hundred FRBs…

We report evidence from the 3B Catalogue that long ($T_{90} > 10$ s) and short ($T_{90} < 10$ s) gamma-ray bursts represent distinct source populations. Their spatial distributions are significantly different, with long bursts having…

天体物理学 · 物理学 2009-10-28 J. I. Katz , L. M. Canel

We present a catalog of the redshift estimates and probability distributions for 1366 individual Long-duration Gamma-Ray Bursts (LGRBs) detected by the Burst And Transient Source Experiment (BATSE). This result is based on a careful…

高能天体物理现象 · 物理学 2019-03-19 Amir Shahmoradi , Robert J. Nemiroff

Using four mixed bivariate distributions (Normal distribution, Skew-Normal distribution, Student distribution, Skew-Student distribution) and bootstrap re-sampling analysis, we analyze the samples of CGRO/BATSE, Swift/BAT and Fermi/GBM…

高能天体物理现象 · 物理学 2022-11-09 Liang Zhang , Juan-Juan Luo , Yong-Feng Huang , Yu-Jun Gong , Sheng Wu

The cosmological origin of $\gamma$-ray bursts (GRBs) is now commonly accepted and, according to several models for the central engine, GRB sources should also emit at the same time gravitational waves bursts (GWBs). We have performed two…

广义相对论与量子宇宙学 · 物理学 2019-08-17 P. Tricarico , A. Ortolan , A. Solaroli , G. Vedovato , L. Baggio , M. Cerdonio , L. Taffarello , J. Zendri , R. Mezzena , G. A. Prodi , S. Vitale , P. Fortini , M. Bonaldi , P. Falferi

$\gamma$-ray bursts have baffled theorists ever since their accidental discovery at the sixties. We suggest that these bursts originate in merger of neutron star binaries, taking place at cosmological distances. These mergers release…

天体物理学 · 物理学 2009-10-22 Tsvi Piran

A method of a search for local sources of superhigh energy gamma rays is described in the paper.It is shown that the method is more effective then the usually used method extracting excess from total intensity if gamma ray burst durations…

天体物理学 · 物理学 2009-10-31 E. N. Alexeyev , D. D. Djappuev , A. U. Kudjaev , S. Kh. Ozrokov

We use a rigorous method, based on Bayesian inference, for calculating the odds favoring the hypothesis that any particular class of astronomical transients produce gamma-ray bursts over the hypothesis that they do not. We then apply this…

天体物理学 · 物理学 2007-05-23 C. Graziani , D. Q. Lamb , G. H. Marion

The stellar origin of gamma-ray bursts can be explained by the rapid release of energy in a highly collimated, extremely relativistic jet. This in turn appears to require a rapidly spinning highly magnetised stellar core that collapses into…

太阳与恒星天体物理 · 物理学 2015-05-19 Christopher A. Tout , Dayal T. Wickramasinghe , Herbert H. -B. Lau , J. E. Pringle , Lilia Ferrario

The observation by the BATSE instrument on the Compton Gamma Ray Observatory that gamma-ray bursts (GRBs) are distributed isotropically around the Earth but nonuniformly in distance has led to the widespread conclusion that GRBs are most…

天体物理学 · 物理学 2016-08-30 S. E. Thorsett

We examine the possibility that gamma-ray bursts arise from sources in the Oort comet cloud, basing most of our arguments on accepted models for the formation and spatial distribution of the cloud. We identify three severe problems with…

天体物理学 · 物理学 2009-10-22 T. E. Clarke , O. Blaes , adn S. Tremaine

The cosmological expansion cannot produce the reported correlations of the gamma-ray burst timescale and spectral energy with peak flux if the burst model reproduces the BATSE 3B peak-flux distribution for a non-evolving burst source…

天体物理学 · 物理学 2009-10-30 J. J. Brainerd

The relation between the event rate of long Gamma-Ray Bursts at low redshift and the star formation rate is still controversial, especially in the low-redshift end. Dong et al. confirmed that the Gamma-Ray Burst rate always exceeds the star…

高能天体物理现象 · 物理学 2023-09-13 X. F. Dong , Z. B. Zhang , Q. M. Li , Y. F. Huang , K. Bian

Anomalies of the cosmic microwave background (CMB) maps have been widely acquainted nowadays from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite to the Planck satellite. One of the anomalies is a multipole alignment from $l=2$ to…

高能天体物理现象 · 物理学 2014-06-30 Lixiong Gan , Yuan-Chuan Zou , Zi-Gao Dai

The extragalactic gamma-ray sky is dominated by two classes of sources: Gamma-Ray Bursts (GRBs) and radio loud active galactic nuclei whose jets are pointing at us (blazars). We believe that the radiation we receive from them originates…

天体物理学 · 物理学 2009-11-10 Gabriele Ghisellini

The little we do know of the physical conditions in gamma-ray bursters makes them conducive to the acceleration of high-energy cosmic rays, especially if they are at cosmological distances. We find that, with the observed statistics and…

天体物理学 · 物理学 2008-11-26 Mordehai Milgrom , Vladimir Usov

The Galactic Center Gamma-Ray Excess has a spectrum, angular distribution, and overall intensity that agree remarkably well with that expected from annihilating dark matter particles in the form of a $m_X \sim 50 \, {\rm GeV}$ thermal…

高能天体物理现象 · 物理学 2022-09-30 Dan Hooper