Using the 2-MASS photometric redshift survey to optimize LIGO follow-up observations

被引：5

作者：

Antolini, Elisa ^{[1
]}

Heyl, Jeremy S. ^{[2
]}

机构：

[1] Univ Perugia, Dipartimento Fis & Geol, I-06123 Perugia, Italy

[2] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 462卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

methods: observational; galaxies: distances and redshifts; SUPERCOSMOS SKY SURVEY; GALAXY LUMINOSITY FUNCTION; 1ST SPECTROSCOPIC DATA; NEUTRON-STAR MERGERS; DATA RELEASE; CATALOG; EVOLUTION; TRANSIENTS; PROSPECTS; EMISSION;

D O I：

10.1093/mnras/stw1720

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The initial discovery of Laser Interferometer Gravitational-Wave Observatory (LIGO) on 2015 September 14 was the inspiral merger and ring-down of the black hole binary at a distance of about 500 Mpc or a redshift of about 0.1. The search for electromagnetic counterparts for the inspiral of binary black holes is impeded by coarse initial source localizations and a lack of a compelling model for the counterpart; therefore, rapid electromagnetic follow-up is required to understand the astrophysical context of these sources. Because astrophysical sources of gravitational radiation are likely to reside in galaxies, it would make sense to search first in regions where the LIGO-Virgo probability is large and where the density of galaxies is large as well. Under the assumption that the probability of a gravitational-wave event from a given region of space is proportional to the density of galaxies within the probed volume, one can calculate an improved localization of the position of the source simply by multiplying the LIGO-Virgo skymap by the density of galaxies in the range of redshifts. We propose using the 2-MASS photometric redshift galaxy catalogue for this purpose and demonstrate that using it can dramatically reduce the search region for electromagnetic counterparts.

引用

页码：1085 / 1091

页数：7

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