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首页> 外文期刊>The Astrophysical journal >SELECTION EFFECTS IN THE REDSHIFT DISTRIBUTION OF GAMMA-RAY BURSTS AND ASSOCIATED QUASI-STELLAR OBJECTS AND ACTIVE GALAXIES
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SELECTION EFFECTS IN THE REDSHIFT DISTRIBUTION OF GAMMA-RAY BURSTS AND ASSOCIATED QUASI-STELLAR OBJECTS AND ACTIVE GALAXIES

机译：伽马射线暴和相关准星体和活动星系的红移分布中的选择效应

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摘要

Redshift distributions of extragalactic objects have been suggested to exhibit periodicities. But based on which periodicities are claimed, peaks and troughs have been shown to be artifacts of observational and analytical selection effects. The long debate over the matter has so far been concerned mostly with quasi-stellar objects (QSOs). However, the claim for periodicities has now been extended to gamma-ray bursts (GRBs), another species of extragalactic objects with high redshifts. The redshift distribution of the 33 objects (23 GRBs and associated nine QSOs and one active galaxy) for which a periodicity is claimed (Burbidge), with one new GRB redshift added and one too many QSO redshift eliminated, is compared with distributions of three selection effect parameters. It is shown that the peaks and troughs in the redshift distribution of the 33 objects have appeared as a result of observational and analytical selection effects. This leads to the conclusion that there is no periodicity in the distribution.
机译：已建议银河外物体的红移分布表现出周期性。但是根据要求的周期性，峰和谷已被证明是观察和分析选择效应的产物。迄今为止，有关此问题的长期辩论主要与准星体（QSO）有关。但是，对周期性的主张现已扩展到伽马射线暴（GRB），伽马射线暴是具有高红移的另一种河外物体。将33个对象（23个GRB和相关的9个QSO和一个活动星系）的周期性要求（Burbidge），添加了一个新的GRB Redshift和消除了一个过多的QSO Redshift的红移分布与三个选择的分布进行了比较效果参数。结果表明，由于观测和分析选择效应，33个物体的红移分布出现了波峰和波谷。由此得出结论，分布没有周期性。

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