Treatment of calibration uncertainty in multi-baseline cross-correlation searches for gravitational waves

J. T. Whelan, E. L. Robinson, J. D. Romano, E. H. Thrane

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

Uncertainty in the calibration of gravitational wave (GW) detector data leads to systematic errors, which must be accounted for in setting limits on the strength of GW signals. When cross-correlation measurements are made using data from a pair of instruments, as in searches for a stochastic GW background, the calibration uncertainties of the individual instruments can be combined into an uncertainty associated with the pair. With the advent of multi-baseline GW observation (e.g., networks consisting of multiple detectors such as the LIGO observatories and Virgo), a more sophisticated treatment is called for. We have described how the correlations between calibration factors associated with different pairs can be taken into account by marginalizing over the uncertainty associated with each instrument.

Original languageEnglish
Article number012027
JournalJournal of Physics: Conference Series
Volume484
Issue number1
DOIs
StatePublished - 2014
Event7th International Conference on Gravitation and Cosmology, ICGC 2011 - Goa, India
Duration: Dec 14 2011Dec 19 2011

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