Redshift distribution and luminosity function of long gamma-ray bursts from cosmological simulations
نویسندگان
چکیده
منابع مشابه
On the Redshift Distribution of Long-Duration Gamma-Ray Bursts
The 26 long-duration gamma-ray bursts (GRBs) with known redshifts form a distinct cosmological set, selected differently than other cosmological probes such as quasars and galaxies. Since the progenitors are now believed to be connected with active starformation and since burst emission penetrates dust, one hope is that with a uniformlyselected sample, the large-scale redshift distribution of G...
متن کاملThe Cosmological Signatures and Flux Distribution of Gamma-Ray Bursts with a Broad Luminosity Distribution
The cosmological expansion cannot produce the reported correlations of the gamma-ray burst timescale and spectral energy with peak flux if the burst model reproduces the BATSE 3B peak-flux distribution for a non-evolving burst source density. The required ratios of time dilation and redshift factors are only produced by monoluminous models at peak fluxes below the BATSE threshold, and they are ...
متن کاملAbsolute Rate, Evolving Luminosity function, and Evolving Jet Opening Angle Distribution for Long Gamma-Ray Bursts
Tatsushi Matsubayashi,1,∗) Ryo Yamazaki,2,∗∗) Daisuke Yonetoku,3,∗∗∗) Toshio Murakami,3,†) and Toshikazu Ebisuzaki1,††) 1Ebisuzaki Computational Astrophysics laboratory, Institute of Physical and Chemical Research (RIKEN) Hirosawa 2-1, Wako, Saitama, 351-0198 Japan 2Department of Earth and Space Science, Osaka University, Toyonaka 560-0043, Japan 3Department of Physics, Kanazawa University, Kak...
متن کاملRedshift distribution of gamma-ray bursts and star formation rate
Aims. The redshift distribution of gamma-ray bursts collected in the BATSE Catalog is compared with the star formation rate. We aim to clarify the accordance between them. We also study the case of comoving number density of bursts monotonously increasing up to redshift (6−20). Methods. A method independent of the models of the gamma-ray bursts is used. The short and the long subgroups are stud...
متن کاملEnergetics and Luminosity Function of Gamma-ray Bursts
Gamma-ray bursts are believed to be some catastrophic event in which material is ejected at a relativistic velocity, and internal collisions within this ejecta produce the observed γ-ray flash. The angular size of a causally connected region within a relativistic flow is of the order the angular width of the relativistic beaming, γ. Thus, different observers along different lines of sights coul...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2010
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2010.17044.x