Gamma-ray bursts and cosmology

2007 ◽  
Vol 365 (1854) ◽  
pp. 1363-1376 ◽  
Author(s):  
D.Q Lamb
Keyword(s):  
Dark Energy ◽  
Early Universe ◽  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts ◽  
Current Status ◽  
Scientific Results ◽  
Short Grbs ◽  
Very High

I review the current status of the use of gamma-ray bursts (GRBs) as probes of the early Universe and cosmology. I describe the promise of long GRBs as probes of the high redshift ( z >4) and very high redshift ( z >5) Universe, and several key scientific results that have come from observations made possible by accurate, rapid localizations of these bursts by Swift. I then estimate the fraction of long GRBs that lie at very high redshifts and discuss ways in which it may be possible to rapidly identify—and therefore study—a larger number of these bursts. Finally, I discuss the ways in which both long and short GRBs can be made ‘standard candles’ and used to constrain the properties of dark energy.

scholarly journals Gamma‐Ray Bursts as a Probe of the Very High Redshift Universe

2000 ◽  
Vol 536 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Donald Q. Lamb ◽  
Daniel E. Reichart
Keyword(s):  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts ◽  
High Redshift Universe ◽  
Very High

Swift observations of gamma-ray bursts

2007 ◽  
Vol 365 (1854) ◽  
pp. 1119-1128 ◽  
Author(s):  
Neil Gehrels
Keyword(s):  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts ◽  
Optical Observations ◽  
Nearby Galaxy ◽  
X Ray ◽  
Star Forming ◽  
Star Forming Regions ◽  
Other Information ◽  
Short Grbs

Since its launch on 20 November 2004, the Swift mission has been detecting approximately 100 gamma-ray bursts (GRBs) each year, and immediately (within approx. 90 s) starting simultaneous X-ray and UV/optical observations of the afterglow. It has already collected an impressive database, including prompt emission to higher sensitivities than BATSE, uniform monitoring of afterglows and a rapid follow-up by other observatories notified through the GCN. Advances in our understanding of short GRBs have been spectacular. The detection of X-ray afterglows has led to accurate localizations and the conclusion that short GRBs can occur in non-star-forming galaxies or regions, whereas long GRBs are strongly concentrated within the star-forming regions. This is consistent with the NS merger model. Swift has greatly increased the redshift range of GRB detection. The highest redshift GRBs, at z ∼5–6, are approaching the era of reionization. Ground-based deep optical spectroscopy of high redshift bursts is giving metallicity measurements and other information on the source environment to a much greater distance than other techniques. The localization of GRB 060218 to a nearby galaxy, and the association with SN 2006aj, added a valuable member to the class of GRBs with detected supernova.

scholarly journals Constraints onw0andwaof dark energy from high-redshift gamma-ray bursts

2009 ◽  
Vol 394 (1) ◽  
pp. L31-L35 ◽  
Author(s):  
Ryo Tsutsui ◽  
Takashi Nakamura ◽  
Daisuke Yonetoku ◽  
Toshio Murakami ◽  
Sachiko Tanabe ◽  
...  
Keyword(s):  
Dark Energy ◽  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts

scholarly journals High redshift gamma-ray bursts as a probe of the early universe and first stars

2018 ◽  
Vol 48 (3) ◽  
pp. 039505
Author(s):  
LIU Zhu ◽  
DAI Zi-Gao ◽  
WEI JunJie ◽  
WANG FaYin ◽  
ZHANG Bing ◽  
...  
Keyword(s):  
Early Universe ◽  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts ◽  
First Stars

scholarly journals THE HOST GALAXIES OFSWIFTDARK GAMMA-RAY BURSTS: OBSERVATIONAL CONSTRAINTS ON HIGHLY OBSCURED AND VERY HIGH REDSHIFT GRBs

2009 ◽  
Vol 138 (6) ◽  
pp. 1690-1708 ◽  
Author(s):  
D. A. Perley ◽  
S. B. Cenko ◽  
J. S. Bloom ◽  
H.-W. Chen ◽  
N. R. Butler ◽  
...  
Keyword(s):  
Gamma Ray ◽  
High Redshift ◽  
Gamma Ray Bursts ◽  
Observational Constraints ◽  
Host Galaxies ◽  
Very High

scholarly journals Spatial distribution of the gamma-ray bursts at very high redshift

2017 ◽  
Vol 12 (S333) ◽  
pp. 203-206
Author(s):  
Attila Mészáros
Keyword(s):  
Spatial Distribution ◽  
Star Formation ◽  
Gamma Ray ◽  
Star Formation Rate ◽  
High Redshift ◽  
Formation Rate ◽  
Gamma Ray Bursts ◽  
Cosmological Principle ◽  
Statistical Studies ◽  
Very High

AbstractThe author - with his collaborators - already in years 1995-96 have shown - purely from the analyses of the observations - that the gamma-ray bursts (GRBs) can be till redshift 20. Since that time several other statistical studies of the spatial distribution of GRBs were provided. Remarkable conclusions concerning the star-formation rate and the validity of the cosmological principle were obtained about the regions of the cosmic dawn. In this contribution these efforts are surveyed.

Sign in / Sign up

Export Citation Format

Share Document