Host galaxies as gamma-ray burst distance indicators.

Band, D.

Technical Information Center Oak Ridge Tennessee

关键词: Afterglow;    Galaxies;    Luminosity;    Distance;    Indicators;   

RP-ID  :  DE2001774338

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We calculate the distributions of the total burst energy, the peak luminosity and the X-ray afterglow energy using burst observations and distances to the associated host galaxies. To expand the sample, we include redshift estimates for host galaxies without spectroscopic redshifts. The methodology requires a model of the host galaxy population; we find that in the best model the burst rate is proportional to the host galaxy luminosity at the time of the burst.