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Published June 2, 2016 | Published
Journal Article Open

Search method for an emission line of a GW background

Abstract

A sharp emission line of a gravitational-wave background (GWB) would be an interesting observational target. Here we study an efficient method to detect a line GWB by correlating data of multiple GW detectors. We find that the width of frequency bin in the data analysis is a critical parameter, and, with the commonly-used value 0.25 Hz, the signal-to-noise ratio could be decreased by up to a factor of 6.6, compared with a finer width of 0.02Hz. By reanalyzing the existing data with a smaller bin width, we might detect a precious line signal from the early universe.

Additional Information

© 2016 IOP Publishing. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. A. N. is supported by JSPS Postdoctoral Fellowships for Research Abroad (No. 25-180). N. S. is supported by JSPS (No. 24540269) and MEXT (No. 24103006).

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Published - Nishizawa_2016_J._Phys.__Conf._Ser._716_012013.pdf

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Additional details

Created:
August 20, 2023
Modified:
October 23, 2023