Gamma Ray Burst
Radio constraints on heavily obscured star formation within dark gamma-ray burst host galaxies
... Highly dust-obscured starbursting galaxies (submillimeter galaxies and their ilk) represent the most extreme sites of star formation in the distant universe and contribute significantly to overall cosmic star formation ...
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A Fermi Gamma-Ray Burst Monitor search for electromagnetic signals coincident with gravitational-wave candidates in Advanced LIGO's first observing run
... prompt gamma-ray counterparts to compact binary coalescence gravitational wave ( GW ) candidates from Advanced LIGO ’ s fi rst observing run ( O1 ) ...Fermi Gamma- Ray Burst Monitor ( ...
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Search for gravitational waves associated with the gamma ray burst GRB030329 using the LIGO detectors
... We have performed a search for bursts of gravitational waves associated with the very bright gamma ray burst GRB030329, using the two detectors at the LIGO Hanford Observatory. Our search covered the ...
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Detection of three gamma ray burst host galaxies ATz∼ 6
... , respectively. In all three cases, the probability of chance coincidence of lower redshift galaxies is 2%, indicating that the detected galaxies are most likely the GRB hosts. These are the fi rst detections of ...
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Energy Injection in Gamma-Ray Burst Afterglows
... of Gamma-ray Bursts (GRBs) that exhibit a simul- taneous re-brightening in their X-ray and optical light curves, and are also detected at radio ...headings: gamma-ray burst: ...
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A Short Gamma-ray Burst 'no-host' Problem? Investigating Large Progenitor Offsets for Short Grbs with Optical Afterglows
... The bimodality of gamma-ray burst (GRB) durations (Kouveliotou et al. 1993) is indicative of separate progenitor populations for long- and short-duration GRBs. While direct observational support ...
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Discovery of the X-Ray Afterglow of the Gamma-Ray Burst of February
... of Gamma-Ray Burst (GRB) sources is the unfavourable combination of an unusual phenomenology and instru- mental ...inadequacy. Gamma-ray telescopes have a poor imaging capability and ...
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Probing gamma-ray burst environments with time variability: ULTRASPEC fast imaging of GRB 080210
... series of 600 s spectra were obtained with VLT/FORS2 in long-slit spectroscopy mode with a 1.0 arcsec wide slit, north–south ori- ented and centred with an R-band acquisition image. The sequence of grisms used was 300V, ...
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The gamma-ray burst afterglow modeling project : foundational statistics and absorption & extinction models
... We next apply the TRF statistic to fit empirical model distributions to the distri- bution of and correlations between observed interstellar extinction parameters in the Milky Way and Magellanic Clouds ( § 3.3), and to ...
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Gamma-Ray Burst Progenitors
... The simultaneous detection of GW and GRB signals offers significant advantages. The GRB signal provides a precise time and location for a GW search. This in turn dramati- cally reduces the number of trials that must be ...
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Probing dust-obscured star formation in the most massive gamma-ray burst host galaxies
... The ATCA radio fluxes of F(5.5 GHz) = 120 ± 32 µJy and F(9.0 GHz) = 106 ± 42 µJy measured during 15−19 April 2011 (Stanway et al. 2014) are consistent within the errors with the flux measured within a week after the GRB ...
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Anisotropic winds in a Wolf-Rayet binary identify a potential gamma-ray burst progenitor
... The X-ray observatory, epoch, observatory observation identification numbers, off-axis angle of Apep during the X-rays observations, and the available X-ray instruments during the observation, are provided ...
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Far-infrared observations of an unbiased sample of gamma-ray burst host galaxies
... pre-Swift burst, in order to not corrupt the unbiased nature of our sample we simply provide our measure- ments of its flux density here, and it does not enter into any other ...
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Hard electron energy distribution in the relativistic shocks of gamma-ray burst afterglows
... to gamma-ray bands. Gamma Ray Bursts (GRBs), their afterglows, Supernova Remnants (SNRs), Active Galactic Nuclei (AGNs) and Pulsar Wind Nebulae (PWN) are some of the most important and ...
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Constraining the Kilonova Rate with Zwicky Transient Facility Searches Independent of Gravitational Wave and Short Gamma-Ray Burst Triggers
... The study of the dynamic sky took a twist when multi- messenger discoveries became reality with the discov- ery of astronomical transients associated with neutrinos (Hirata et al. 1987; IceCube Collaboration et al. 2018; ...
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GRB 090313 and the Origin of Optical Peaks in Gamma-Ray Burst Light Curves: Implications for Lorentz Factors and Radio Flares
... from gamma to optical wavelength, beginning during the prompt emission as early as 70 s ...the gamma-ray spectral index after 70 s further confirms the afterglow onset at this time (Mundell et ...The ...
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Low-resolution spectroscopy of gamma-ray burst optical afterglows: Biases in the swift sample and characterization of the absorbers
... (2009b) constrain the fraction of z > 7 bursts further to <7% at 90% confidence. A similar conclusion is reached from a study of a complete sample of GRB host galaxies (J. Hjorth et al. 2010, in preparation). It ...
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Photometric redshifts for gamma-ray burst afterglows from GROND and Swift/UVOT
... The photometric identification of a redshift signature in the spec- tral energy distribution (SED) of a GRB afterglow requires de- tections in at least two filters to measure the continuum and an- other one to locate the ...
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Application of Gamma Ray Burst in Dark Energy Model
... of Gamma-Ray Bursts (GRBs) [10]. Gamma-Ray Bursts are the most violent explosions in the universe, in theory, when the fuel runs out massive stars explode or collapse two adjacent dense star ...
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On the Origin of the Gamma Ray Burst Redshift Distribution in the Early Universe
... Gamma-ray bursts (GRBs) are the most powerful events in the universe, and are promising stan- dard candles for cosmological studies. The data from NASA's Swift satellite reveal a distribution for the GRB ...
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