We report on an all-sky search for periodic gravitational waves in the frequency band 20-475 Hz and with a frequency time derivative in the range of [-1.0,+0.1] x 10⁻⁸ Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our galaxy. This search uses the data from Advanced LIGO's first observational run, O1. No periodic gravitational wave signals were observed, and upper limits were placed on their strengths. The lowest upper limits on worst-case (linearly polarized) strain amplitude h₀ are ∼ 4 x 10⁻²⁵ near 170 Hz. For a circularly polarized source (most favorable orientation), the smallest upper limits obtained are ∼ 1.5 x 10⁻²⁵. These upper limits refer to all sky locations and the entire range of frequency derivative values. For a population-averaged ensemble of sky locations and stellar orientations, the lowest upper limits obtained for the strain amplitude are ∼ 2.5 x 10⁻²⁵.

All-sky search for periodic gravitational waves in the O1 LIGO data

Allocca, A.;Basti, A.;Bitossi, M.;Boschi, V.;Cerretani, G.;Del Pozzo, W.;Di Lieto, A.;Di Renzo, F.;Ferrante, I.;Ferrini, F.;Fidecaro, F.;Gonzalez Castro, J. M.;Passaquieti, R.;Patricelli, B.;Poggiani, R.;Razzano, M.;Tonelli, M.;
2017-01-01

Abstract

We report on an all-sky search for periodic gravitational waves in the frequency band 20-475 Hz and with a frequency time derivative in the range of [-1.0,+0.1] x 10⁻⁸ Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our galaxy. This search uses the data from Advanced LIGO's first observational run, O1. No periodic gravitational wave signals were observed, and upper limits were placed on their strengths. The lowest upper limits on worst-case (linearly polarized) strain amplitude h₀ are ∼ 4 x 10⁻²⁵ near 170 Hz. For a circularly polarized source (most favorable orientation), the smallest upper limits obtained are ∼ 1.5 x 10⁻²⁵. These upper limits refer to all sky locations and the entire range of frequency derivative values. For a population-averaged ensemble of sky locations and stellar orientations, the lowest upper limits obtained for the strain amplitude are ∼ 2.5 x 10⁻²⁵.
2017
Abbott, B. P.; Abbott, R.; Abbott, T. D.; Acernese, F.; Ackley, K.; Adams, C.; Adams, T.; Addesso, P.; Adhikari, R. X.; Adya, V. B.; Affeldt, C.; Afro...espandi
File in questo prodotto:
File Dimensione Formato  
PhysRevD.96.062002.pdf

accesso aperto

Tipologia: Versione finale editoriale
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 4.13 MB
Formato Adobe PDF
4.13 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/887831
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 67
  • ???jsp.display-item.citation.isi??? 65
social impact