Gravitational waves from rapidly rotating neutron stars

Brynmor Haskell, Nils Andersson, Caroline D‘Angelo, Nathalie Degenaar, Kostas Glampedakis, Wynn C G Ho, Paul Lasky, Andrew Melatos, Manuel Oppenoorth, Alessandro Patruno, Maxim Priymak

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

4 Citations (Scopus)

Abstract

Rapidly rotating neutron stars in Low Mass X-ray Binaries have been proposed as an interesting source of gravitational waves. In this chapter we present estimates of the gravitational wave emission for various scenarios, given the (electromagnetically) observed characteristics of these systems. First of all we focus on the r-mode instability and show that a “minimal” neutron star model (which does not incorporate exotica in the core, dynamically important magnetic fields or superfluid degrees of freedom), is not consistent with observations.We then present estimates of both thermally induced and magnetically sustained mountains in the crust. In general magnetic mountains are likely to be detectable only if the buried magnetic field of the star is of the order of B ≈ 1012 G. In the thermal mountain case we find that gravitational wave emission from persistent systems may be detected by ground based interferometers. Finally we re-asses the idea that gravitational wave emission may be balancing the accretion torque in these systems, and show that in most cases the disc/magnetosphere interaction can account for the observed spin periods.

Original languageEnglish
Title of host publicationGravitational Wave Astrophysics
Subtitle of host publicationproceedings of the 3rd Session of the Sant Cugat Forum on Astrophysics
EditorsCarlos F Sopuerta
Pages85-102
Number of pages18
ISBN (Electronic)9783319104881
DOIs
Publication statusPublished - 2015
EventSant Cugat Forum on Astrophysics - Sant Cugat, Barcelona, Spain
Duration: 22 Apr 201425 Apr 2014
Conference number: 3
http://www.ice.csic.es/research/forum/2014.html (Some information can be assessed from Internet Wayback Machine)

Publication series

NameAstrophysics and Space Science Proceedings
PublisherSpringer
Volume40
ISSN (Print)1570-6591
ISSN (Electronic)1570-6605

Conference

ConferenceSant Cugat Forum on Astrophysics
CountrySpain
CitySant Cugat, Barcelona
Period22/04/1425/04/14
Internet address

Cite this