Abstract

Rotating neutron stars (NSs) are the primary expected source of continuous, periodic gravitational waves (GWs) for groundbased GW detectors. Targets include known pulsars (Aasi et al. 2014a), non-pulsating NSs in supernova remnants (Wette et al. 2008; Abadie et al. 2010; Aasi et al. 2015a), and unknown isolated (Aasi et al. 2016; Abbott et al. 2016a) or binary NSs (Aasi et al. 2014b). A particularly promising source is an accreting NS in a low-mass X-ray binary (LMXB); accretion torque spins up the NS into the frequency band of the detectors, and the accretion can generate an asymmetric mass or current quadrupole that acts as the source for the GWs (Watts et al. 2008). An approximate equilibrium between the accretion spinup and GW spin-down, as well as other spin-down torques can produce a signal that is nearly periodic in the NSʼs rest frame, and then Doppler-shifted due to the orbital motion of the NS …

Date

September 20, 2017

Authors

Benjamin P Abbott, R Abbott, TD Abbott, F Acernese, K Ackley, C Adams, T Adams, P Addesso, RX Adhikari, VB Adya, C Affeldt, M Afrough, B Agarwal, M Agathos, K Agatsuma, N Aggarwal, OD Aguiar, L Aiello, A Ain, P Ajith, B Allen, G Allen, A Allocca, PA Altin, A Amato, A Ananyeva, SB Anderson, WG Anderson, S Antier, S Appert, K Arai, MC Araya, JS Areeda, N Arnaud, KG Arun, STEFANO Ascenzi, G Ashton, M Ast, SM Aston, P Astone, P Aufmuth, C Aulbert, K AultONeal, A Avila-Alvarez, S Babak, P Bacon, MKM Bader, S Bae, PT Baker, F Baldaccini, G Ballardin, SW Ballmer, S Banagiri, JC Barayoga, SE Barclay, BC Barish, D Barker, F Barone, B Barr, L Barsotti, M Barsuglia, D Barta, J Bartlett, I Bartos, R Bassiri, A Basti, JC Batch, C Baune, M Bawaj, Marco Bazzan, B Bécsy, C Beer, M Bejger, I Belahcene, AS Bell, BK Berger, G Bergmann, CPL Berry, D Bersanetti, A Bertolini, J Betzwieser, S Bhagwat, R Bhandare, IA Bilenko, G Billingsley, CR Billman, J Birch, R Birney, O Birnholtz, S Biscans, A Bisht, M Bitossi, C Biwer, MA Bizouard, JK Blackburn, J Blackman, CD Blair, DG Blair, RM Blair, S Bloemen, O Bock, N Bode, M Boer, G Bogaert, A Bohe, F Bondu, R Bonnand, BA Boom, R Bork, V Boschi, S Bose, Y Bouffanais, A Bozzi, C Bradaschia, PR Brady, VB Braginsky, M Branchesi, JE Brau, T Briant, A Brillet, M Brinkmann, V Brisson, P Brockill, JE Broida, AF Brooks, DA Brown, DD Brown, NM Brown, S Brunett, CC Buchanan, A Buikema, T Bulik, HJ Bulten, A Buonanno, D Buskulic, C Buy, RL Byer, M Cabero, L Cadonati, G Cagnoli, C Cahillane, J Calderón Bustillo, TA Callister, E Calloni, JB Camp, M Canepa, P Canizares, KC Cannon, H Cao, J Cao

Journal

The Astrophysical Journal

Volume

847

Issue

1

Pages

47

Publisher

IOP Publishing