Survival analysis of the optical brightness of GRB host galaxies
I. I. Racz, L. G. Balazs, Z. Bagoly, L. V.Toth
TL;DR
This study applies survival analysis to the optical brightness of GRB host galaxies, exploring their distribution, dependence on GRB data, and comparison with standard galaxy populations.
Contribution
It introduces an unbiased optical brightness distribution for GRB host galaxies and examines its relation to GRB properties and standard galaxy distributions.
Findings
Optical brightness distribution of GRB host galaxies was characterized.
Dependence of brightness distribution on GRB data was analyzed.
Comparison with standard galaxy distributions was performed.
Abstract
We studied the unbiased optical brightness distribution which was calculated from the survival analysis of host galaxies and its relationship with the Swift GRB data of the host galaxies observed by the Keck telescopes. Based on the sample obtained from merging the Swift GRB table and the Keck optical data we also studied the dependence of this distribution on the data of the GRBs. Finally, we compared the HGs distribution with standard galaxies distribution which is in the DEEP2 galaxies catalog.
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Taxonomy
TopicsGamma-ray bursts and supernovae · CCD and CMOS Imaging Sensors · Astronomy and Astrophysical Research