Directed searches for continuous gravitational waves from twelve supernova remnants in data from Advanced LIGO’s second observing run
Lee Lindblom, B. J. Owen
Abstract
We describe directed searches for continuous gravitational waves from twelve well-localized nonpulsing candidate neutron stars in young supernova remnants using data from Advanced LIGO's second observing run. We assumed that each neutron star is isolated and searched a band of frequencies from 15 to 150 Hz, consistent with frequencies expected from known young pulsars. After coherently integrating spans of data ranging from 12.0 to 55.9 days using the $\mathcal{F}$-statistic and applying data-based vetoes, we found no evidence of astrophysical signals. We set upper limits on intrinsic gravitational wave amplitude in some cases stronger than ${10}^{\ensuremath{-}25}$, generally about a factor of two better than upper limits on the same objects from Advanced LIGO's first observing run.