Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21914614l&link_type=abstract
American Astronomical Society, AAS Meeting #219, #146.14
Astronomy and Astrophysics
Astrophysics
Scientific paper
Space-based gravitational wave interferometers are strongly sensitive to the galactic population of ultra-compact binaries. An important subset of the ultra-compact binary population are those stars that can be individually resolved by gravitational wave interferometers as well as with electromagnetic telescopes. The aim of this paper is to quantify the multi-messenger potential of space-based interferometers with arm-lengths between 1 and 5 Gm. First we examine the known ultra-compact binaries that have been well-studied with electromagnetic telescopes. Using the known astrophysical properties of the verification binaries as priors for a Markov Chain Monte Carlo study, we show that our ability to further constrain the individual masses of the system or the distance to the source is not greatly affected by changes in the size of the detector. Second, the Fisher Information Matrix is used to estimate how many binaries from a synthesized model of the Milky Way below a certain magnitude limit are localized on the sky to within 1 square degree by the gravitational wave detector. This is taken as an estimate of how many prospective candidates a space-based interferometer will discover that could then be studied with electromagnetic telescopes. We find, depending on choice of detector characteristics and limiting magnitude, that tens to thousands of gravitational wave sources could be detected in electromagnetic follow-ups.
Larson Shane L.
Littenberg Tyson B.
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