SUPPLEMENT: "gOING the DISTANCE: MAPPING HOST GALAXIES of LIGO and VIRGO SOURCES in THREE DIMENSIONS USING LOCAL COSMOGRAPHY and TARGETED FOLLOW-UP" (2016, ApJL, 829, L15)

Leo P. Singer, Hsin Yu Chen, Daniel E. Holz, Will M. Farr, Larry R. Price, Vivien Raymond, S. Bradley Cenko, Neil Gehrels, John Cannizzo, Mansi M. Kasliwal, Samaya Nissanke, Michael Coughlin, Ben Farr, Alex L. Urban, Salvatore Vitale, John Veitch, Philip Graff, Christopher Philip Luke Berry, Satya Mohapatra, Ilya Mandel

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

This is a supplement to the Letter of Singer et al., in which we demonstrated a rapid algorithm for obtaining joint 3D estimates of sky location and luminosity distance from observations of binary neutron star mergers with Advanced LIGO and Virgo. We argued that combining the reconstructed volumes with positions and redshifts of possible host galaxies can provide large-aperture but small field of view instruments with a manageable list of targets to search for optical or infrared emission. In this Supplement, we document the new HEALPix-based file format for 3D localizations of gravitational-wave transients. We include Python sample code to show the reader how to perform simple manipulations of the 3D sky maps and extract ranked lists of likely host galaxies. Finally, we include mathematical details of the rapid volume reconstruction algorithm.

Original languageEnglish (US)
Article number10
JournalAstrophysical Journal, Supplement Series
Volume226
Issue number1
DOIs
StatePublished - Sep 2016

Keywords

  • catalogs
  • galaxies: distances and redshifts
  • gravitational waves
  • surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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