English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The initial discovery of LIGO on 14 September 2015 was the inspiral mergerand ring-down of the black hole binary at a distance of about 500~Mpc or aredshift of about 0.1. The search for electromagnetic counterparts for theinspiral of binary black holes is impeded by coarse initial sourcelocalisations and a lack of a compelling model for the counterpart; therefore,rapid electromagnetic follow-up is required to understand the astrophysicalcontext of these sources. Because astrophysical sources of gravitationalradiation are likely to reside in galaxies, it would make sense to search firstin regions where the LIGO-Virgo probability is large and where the density ofgalaxies is large as well. Under the assumption that the probability of agravitational-wave event from a given region of space is proportional to thedensity of galaxies within the probed volume, one can calculate an improvedlocalisation of the position of the source simply by multiplying the LIGO-Virgoskymap by the density of galaxies in the range of redshifts. We propose usingthe 2-MASS Photometric Redshift Galaxy Catalogue for this purpose anddemonstrate that using it can dramatically reduce the search region forelectromagnetic counterparts.

Using the 2-MASS Photometric Redshift Survey to optimize LIGO Follow-Up Observations