Search method for long-duration gravitational-wave transients from neutron stars

Details Search method for long-duration gravitational-wave transients from neutron stars Search method for long-duration gravitational-wave transients from neutron stars

2011-04-09

arxiv.org/abs/1104.1704v1

Phys.Rev.D84:023007,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, 9 figures; submitted to PRD

Scientific paper

10.1103/PhysRevD.84.023007

We introduce a search method for a new class of gravitational-wave signals, namely long-duration O(hours - weeks) transients from spinning neutron stars. We discuss the astrophysical motivation from glitch relaxation models and we derive a rough estimate for the maximal expected signal strength based on the superfluid excess rotational energy. The transient signal model considered here extends the traditional class of infinite-duration continuous-wave signals by a finite start-time and duration. We derive a multi-detector Bayes factor for these signals in Gaussian noise using $\F$-statistic amplitude priors, which simplifies the detection statistic and allows for an efficient implementation. We consider both a fully coherent statistic, which is computationally limited to directed searches for known pulsars, and a cheaper semi-coherent variant, suitable for wide parameter-space searches for transients from unknown neutron stars. We have tested our method by Monte-Carlo simulation, and we find that it outperforms orthodox maximum-likelihood approaches both in sensitivity and in parameter-estimation quality.

Affiliated with

Also associated with

No associations

Rating

Search method for long-duration gravitational-wave transients from neutron stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Search method for long-duration gravitational-wave transients from neutron stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search method for long-duration gravitational-wave transients from neutron stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-353414