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Physical Review D, 2017 Many theories of dark matter (DM) predict that DM particles can be captured by stars via scattering on ordinary matter. They subsequently condense into a DM core close to the center of the star and eventually annihilate. In this work, we trace DM capture and annihilation rates throughout the life of a massive star and show that this evolution ...
Brdar, Vedran, Kopp, Joachim, Liu, Jia
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Size of shell universe in light of Fermi GBM transient associated with GW150914
Physics Letters B, 2016 The possible burst occurred in location and temporal consistence with gravitational wave event GW150914, as reported by Fermi GBM, offers a new way of constraining models with extra dimensions.
Merab Gogberashvili +2 more
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Superlong gamma-ray bursts [PDF]
Astronomy Letters, 2005 Before the BATSE/GRO launch GRBs seem to be a uniform phenomenon with duration up to about 100 seconds. The BATSE has detected many events longer than 100 s and a few longer than 500s. We performed the off-line scan of the 1024 ms continuous BATSE records and revealed several non-triggered episodes of the BATSE GRB triggers which confidently belong to ...
Ya. Yu. Tikhomirova, Boris E. Stern
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International Astronomical Union Colloquium, 2005 SummarySince their discovery in 1967 Gamma-ray bursts (GRBs) have been puzzling to astrophysicists. With the advent of a new generation of X–ray satellites in the late 90’s, it was possible to carry out deep multi-wavelength observations of the counterparts associated with the long duration GRBs class just within a few hours of occurrence, thanks to ...
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THE COSMIC GAMMA-RAY BURSTS [PDF]
The Ninth Marcel Grossmann Meeting, 2002 Cosmic gamma-ray bursts are one of the great frontiers of astrophysics today. They are a playground of relativists and observers alike. They may teach us about the death of stars and the birth of black holes, the physics in extreme conditions, and help us probe star formation in the distant and obscured universe. In this review we summarise some of the
S. G. Djorgovski +14 more
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Are there MeV gamma-ray bursts? [PDF]
AIP Conference Proceedings, 1996 It is often stated that gamma-ray bursts (GRBs) have typical energies of several hundred keV. Is this a real feature of GRBs or is it due to an observational bias? We consider the possibility that bursts of a given bolometric luminosity occur with a hardness distribution $p(H)d \log H \propto H^ d \log H$. We model the detection efficiency of BATSE as
Tsvi Piran, Ramesh Narayan
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Gamma-Ray Burst Prompt Correlations
Advances in Astronomy, 2018 The mechanism responsible for the prompt emission of gamma-ray bursts (GRBs) is still a debated issue. The prompt phase-related GRB correlations can allow discriminating among the most plausible theoretical models explaining this emission.
M. G. Dainotti +2 more
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Light speed variation from gamma ray burst GRB 160509A
Physics Letters B, 2016 It is postulated in Einstein's relativity that the speed of light in vacuum is a constant for all observers. However, the effect of quantum gravity could bring an energy dependence of light speed.
Haowei Xu, Bo-Qiang Ma
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Nanolensing of Gamma‐Ray Bursts [PDF]
The Astrophysical Journal, 2003 28 pages, 12 figures, matches version accepted by ApJ (fixed minor error in fold lens mapping)
Mark Walker +3 more
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New Astronomy, 2000 32 pages, 8 figures, accepted for publication in New ...
Brown, G.E. +5 more
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