Using galaxy formation simulations to optimize LIGO follow-up observations

Elisa Antolini, Ilaria Caiazzo, Romeel Davé, Jeremy S. Heyl

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The recent discovery of gravitational radiation from merging black holes poses a challenge of how to organize the electromagnetic follow-up of gravitational-wave events as well as observed bursts of neutrinos. We propose a technique to select the galaxies that are most likely to host the event given some assumptions of whether the particular event is associated with recent star formation, low-metallicity stars or simply proportional to the total stellar mass in the galaxy. We combine data from the 2-MASS Photometric Redshift Galaxy Catalogue with results from galaxy formation simulations to develop observing strategies that potentially reduce the area of sky to search by up to a factor of 2 relative to an unweighted search of galaxies, and a factor of 20 to a search over the entire LIGO localization region.

Original languageEnglish (US)
Pages (from-to)2212-2216
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
StatePublished - Apr 1 2017


  • Galaxies: distances
  • Gravitational waves
  • Methods: observational
  • Redshifts

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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