scholarly journals The Compatibility of Friedmann Cosmological Models with Observed Properties of Gamma‐Ray Bursts and a Large Hubble Constant

1996 ◽  
Vol 472 (1) ◽  
pp. 25-33 ◽  
Author(s):  
John M. Horack ◽  
Thomas M. Koshut ◽  
Robert S. Mallozzi ◽  
A. Gordon Emslie ◽  
Charles A. Meegan
Keyword(s):  
Gamma Ray ◽  
Hubble Constant ◽  
Cosmological Models ◽  
Gamma Ray Bursts ◽  
Friedmann Cosmological Models

scholarly journals Constraints on holographic cosmological models from gamma ray bursts

2016 ◽  
Vol 10 ◽  
pp. 33-43
Author(s):  
Alexander Bonilla Rivera ◽  
Jairo Ernesto Castillo Hernandez
Keyword(s):  
Gamma Ray ◽  
Cosmological Models ◽  
Gamma Ray Bursts

Gravitational-wave astrophysics from neutron star inspiral and coalescence

2018 ◽  
Vol 27 (11) ◽  
pp. 1843018 ◽  
Author(s):  
John L. Friedman
Keyword(s):  
Neutron Star ◽  
Gravitational Wave ◽  
Gamma Ray ◽  
Hubble Constant ◽  
Gamma Ray Bursts ◽  
Nuclear Density ◽  
Independent Measurement ◽  
Process Elements ◽  
Heaviest Elements ◽  
Cold Matter

Prior to the observation of a double neutron star inspiral and merger, its possible implications were striking. Events whose light and gravitational waves are simultaneously detected could resolve the 50-year mystery of the origin of short gamma-ray bursts; they might provide strong evidence for (or against) mergers as the main source of half the heaviest elements (the [Formula: see text]-process elements); and they could give an independent measurement of the Hubble constant. The closest events can also address a primary goal of gravitational-wave astrophysics: From the imprint of tides on inspiral waveforms, one can find the radius and tidal distortion of the inspiraling stars and infer the behavior of cold matter above nuclear density. Remarkably, the first observation of the inspiral and coalescence of a double neutron star system was accompanied by a gamma-ray burst and then an array of electromagnetic counterparts, and the combined effort of the gravitational-wave and astronomy communities has led to dramatic advances along all of these anticipated avenues of multimessenger astrophysics.

scholarly journals The gamma-ray bursts Hubble diagram in quintessential cosmological models

2010 ◽  
Vol 411 (2) ◽  
pp. 1213-1222 ◽  
Author(s):  
Marek Demianski ◽  
Ester Piedipalumbo ◽  
Claudio Rubano
Keyword(s):  
Gamma Ray ◽  
Cosmological Models ◽  
Gamma Ray Bursts ◽  
Hubble Diagram

scholarly journals Cosmological models of gamma-ray bursts

1995 ◽  
Vol 231 (1-2) ◽  
pp. 377-388 ◽  
Author(s):  
Charles D. Dermer ◽  
Thomas J. Weiler
Keyword(s):  
Gamma Ray ◽  
Cosmological Models ◽  
Gamma Ray Bursts

scholarly journals Gamma-ray Bursts Cosmology with The X-ray Fundamental Plane Relation

2020 ◽  
Author(s):  
Maria Dainotti ◽  
Jacob Fernandez ◽  
Giuseppe Saraccino ◽  
Aleksander Lenart ◽  
Sergey Postnikov ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Background Radiation ◽  
Cosmological Parameters ◽  
Energy Parameter ◽  
Hubble Constant ◽  
Matter Content ◽  
Gamma Ray Bursts ◽  
Opening Angle ◽  
Fundamental Plane ◽  
X Ray

Abstract Cosmological models and the value of their parameters are at the center of the debate because of the tension between the results obtained by the SNe Ia data and the Plank ones of the Cosmic Microwave Background Radiation. Thus, adding cosmological probes observed at high redshifts, such as Gamma-Ray Bursts (GRBs), is needed. Using GRB correlations between luminosities and a cosmological independent variable is challenging because GRB luminosities vary widely. We corrected a tight correlation between the rest-frame end time of the X-ray plateau, its corresponding X-ray luminosity, and the peak prompt luminosity: the so-called fundamental plane relation, using the jet opening angle. Its intrinsic scatter is 0:017 m 0:010 dex, 95% smaller than the isotropic fundamental plane relation, the smallest compared to any current GRB correlation in the literature. This shows that GRBs can be used as reliable cosmological tools. We use this GRB corrected correlation for the so-called platinum sample (a well-defined set with relatively flat plateaus), together with SNe Ia data, to constrain different cosmological parameters like the matter content of the universe today, M, the Hubble constant H0, and the dark energy parameter w for a wCDM model. We confirm the wCDM model but using GRBs up to z = 5, a redshift range much larger than one of SNe Ia.

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