scholarly journals A comparison between short GRB afterglows and kilonova AT2017gfo: shedding light on kilonovae properties

2020 ◽  
Vol 493 (3) ◽  
pp. 3379-3397 ◽  
Author(s):  
A Rossi ◽  
G Stratta ◽  
E Maiorano ◽  
D Spighi ◽  
N Masetti ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Gamma Ray ◽  
Light Curves ◽  
Optical Counterpart ◽  
Wave Source ◽  
Gamma Ray Burst ◽  
Nir Light ◽  
First Time ◽  
Short Grbs

ABSTRACT Multimessenger astronomy received a great boost following the discovery of kilonova (KN) AT2017gfo, the optical counterpart of the gravitational wave source GW170817 associated with the short gamma-ray burst GRB 170817A. AT2017gfo was the first KN that could be extensively monitored in time using both photometry and spectroscopy. Previously, only few candidates have been observed against the glare of short GRB afterglows. In this work, we aim to search the fingerprints of AT2017gfo-like KN emissions in the optical/NIR light curves of 39 short GRBs with known redshift. For the first time, our results allow us to study separately the range of luminosity of the blue and red components of AT2017gfo-like kilonovae in short GRBs. In particular, the red component is similar in luminosity to AT2017gfo, while the blue KN can be more than 10 times brighter. Finally, we exclude a KN as luminous as AT2017gfo in GRBs 050509B and 061201.

scholarly journals Gamma‐Ray Burst Afterglow: Polarization and Analytic Light Curves

1999 ◽  
Vol 511 (2) ◽  
pp. 852-861 ◽  
Author(s):  
Andrei Gruzinov ◽  
Eli Waxman
Keyword(s):  
Gamma Ray ◽  
Light Curves ◽  
Gamma Ray Burst

scholarly journals GRANDMA: A NETWORK TO COORDINATE THEM ALL

2021 ◽  
Vol 53 ◽  
pp. 198-205
Author(s):  
S. Agayeva ◽  
S. Alishov ◽  
S. Antier ◽  
V. R. Ayvazian ◽  
J. M. Bai ◽  
...  
Keyword(s):  
Organizational Structure ◽  
Gravitational Wave ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
International Project ◽  
Optical Counterpart ◽  
Transient Source ◽  
Transient Sources ◽  
Imaging Strategy ◽  
Initial Results

GRANDMA is an international project that coordinates telescope observations of transient sources with large localization uncertainties. Such sources include gravitational wave events, gamma-ray bursts and neutrino events. GRANDMA currently coordinates 25 telescopes (70 scientists), with the aim of optimizing the imaging strategy to maximize the probability of identifying an optical counterpart of a transient source. This paper describes the motivation for the project, organizational structure, methodology and initial results.

scholarly journals Are the missing X-ray breaks in gamma-ray burst afterglow light curves merely hidden?

2008 ◽  
Vol 386 (2) ◽  
pp. 859-863 ◽  
Author(s):  
P. A. Curran ◽  
A. J. van der Horst ◽  
R. A. M. J. Wijers
Keyword(s):  
Gamma Ray ◽  
Light Curves ◽  
Gamma Ray Burst ◽  
X Ray

scholarly journals Imprint of Gravitational Lensing by Population III Stars in Gamma‐Ray Burst Light Curves

2006 ◽  
Vol 650 (1) ◽  
pp. 252-260 ◽  
Author(s):  
Y. Hirose ◽  
M. Umemura ◽  
A. Yonehara ◽  
J. Sato
Keyword(s):  
Gravitational Lensing ◽  
Gamma Ray ◽  
Light Curves ◽  
Gamma Ray Burst ◽  
Population Iii Stars ◽  
Population Iii

scholarly journals Constraints on the circumburst environments of short gamma-ray bursts

2020 ◽  
Vol 495 (4) ◽  
pp. 4782-4799 ◽  
Author(s):  
Brendan O’Connor ◽  
Paz Beniamini ◽  
Chryssa Kouveliotou
Keyword(s):  
Gamma Ray ◽  
Galactic Halo ◽  
Gamma Ray Bursts ◽  
Light Curves ◽  
Host Galaxy ◽  
Host Galaxies ◽  
Binary Neutron Star ◽  
Range Of Values ◽  
Short Grbs

ABSTRACT Observational follow up of well localized short gamma-ray bursts (SGRBs) has left $20\!-\!30{{\ \rm per\ cent}}$ of the population without a coincident host galaxy association to deep optical and NIR limits (≳26 mag). These SGRBs have been classified as observationally hostless due to their lack of strong host associations. It has been argued that these hostless SGRBs could be an indication of the large distances traversed by the binary neutron star system (due to natal kicks) between its formation and its merger (leading to an SGRB). The distances of GRBs from their host galaxies can be indirectly probed by the surrounding circumburst densities. We show that a lower limit on those densities can be obtained from early afterglow light curves. We find that ${\lesssim}16{{\ \rm per\ cent}}$ of short GRBs in our sample took place at densities ≲10−4 cm−3. These densities represent the expected range of values at distances greater than the host galaxy’s virial radii. We find that out of the five SGRBs in our sample that have been found to be observationally hostless, none are consistent with having occurred beyond the virial radius of their birth galaxies. This implies one of two scenarios. Either these observationally hostless SGRBs occurred outside of the half-light radius of their host galaxy, but well within the galactic halo, or in host galaxies at moderate to high redshifts (z ≳ 2) that were missed by follow-up observations.

scholarly journals 2900 Square Degree Search for the Optical Counterpart of Short Gamma-Ray Burst GRB 180523B with the Zwicky Transient Facility

2019 ◽  
Vol 131 (998) ◽  
pp. 048001 ◽  
Author(s):  
Michael W. Coughlin ◽  
Tomás Ahumada ◽  
S. Bradley Cenko ◽  
Virginia Cunningham ◽  
Shaon Ghosh ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Optical Counterpart ◽  
Gamma Ray Burst

scholarly journals Gamma ray burst optical counterpart search experiment (GROCSE)

1996 ◽  
Author(s):  
Hye-Sook Park ◽  
Elden Ables ◽  
Richard M. Bionta ◽  
Linda Ott ◽  
Eric Parker ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Optical Counterpart ◽  
Gamma Ray Burst ◽  
Search Experiment

scholarly journals GAMMA-RAY BURST LIGHT CURVES IN THE RELATIVISTIC TURBULENCE AND RELATIVISTIC SUBJET MODELS

2009 ◽  
Vol 695 (1) ◽  
pp. L10-L14 ◽  
Author(s):  
Ayah Lazar ◽  
Ehud Nakar ◽  
Tsvi Piran
Keyword(s):  
Gamma Ray ◽  
Light Curves ◽  
Gamma Ray Burst
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