30 mai 2017 à 2 juin 2017
Impérial Palace
Fuseau horaire Europe/Paris

Hunting the oxymoron: transient continuous waves from disturbed neutron stars

1 juin 2017, 15:25
15m
Impérial Palace

Impérial Palace

Allée de l'Impérial, Annecy

Orateur

Dr David Keitel (University of Glasgow)

Description

Disturbed neutron stars -- soon after their birth, after a starquake or due to episodic accretion -- could emit gravitational waves in the ground-based detector band, both in the form of initial bursts and as longer-lasting weak transients. Data analysis methods derived from the established search efforts for "continuous waves" are well suited for transient quasi-periodic signals with durations from hours to weeks. We discuss the application of such "transient continuous wave" search methods, focussing on two scenarios: targeted analysis of glitching pulsars known from electromagnetic observations, and the followup of outliers from all-sky continuous-wave searches which exhibit hints of transient behaviour. Based on mock data studies, we consider the sensitivities achievable with advanced LIGO, and the potential of transient detections -- or upper limits -- to study the structure of neutron stars and the physical mechanisms behind glitches.

Auteur principal

Dr David Keitel (University of Glasgow)

Co-auteurs

M. Brynley Pearlstone (University of Glasgow) D.I. Jones (University of Southampton) Prof. Graham Woan (University of Glasgow) Ignacio Santiago PRIETO (Universidad Iberoamericana, Mexico) Dr Ik Siong Heng (University of Glasgow) Dr Matthew Pitkin (University of Glasgow)

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