Publication: The sources of long GRBs: Population inhomogeneity or possibility its using as standard candles
Дата
2019
Авторы
Arkhangelskaja, I. V.
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© Published under licence by IOP Publishing Ltd. Large articles amount refers to GRBs (at least long ones) as standard candles and then concludes various cosmological consequences. But firstly long GRBs sources population homogeneity should be proved. Redshift distribution analysis should represent GRBs population homogeneity if its shape similar to one of objects with real uniform distribution in our Metagalaxy, such as SN1a (subsets of 42 and 53 ones used for its Ω and Λ definition). There are one maximum in each subset redshifts distributions. Typically considered short and long GRBs classes separated by t 90 =2s. Moreover, registered event duration strongly depends on detector energy band and method used for temporal profile analysis and the same events could have different duration on various detectors data. GRBs mostly located at high redshifts and cosmological correction should be used in duration investigation. Redshift distribution for registered by Swift/BAT GRBs with t 90 >1s (corrected to z) was analyzed with short GRBs exclusion. But its redshift distribution is sufficiently differs from ones for SN1a: bursts deficit occur at z∼2, possibly caused by long GRBs population inhomogeneity. So, preliminary analyses results allow conclude long GRBs population inhomogeneity. Thus using GRBs as "standard candles" previously required events advanced classification completion and consideration only certain GRBs subsets.
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Arkhangelskaja, I. V. The sources of long GRBs: Population inhomogeneity or possibility its using as standard candles / Arkhangelskaja, I.V. // Journal of Physics: Conference Series. - 2019. - 1181. - № 1. - 10.1088/1742-6596/1181/1/012050
URI
https://www.doi.org/10.1088/1742-6596/1181/1/012050
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https://www.scopus.com/record/display.uri?eid=2-s2.0-85064356104&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000556332900050
https://openrepository.mephi.ru/handle/123456789/16891