We search for continuous gravitational waves (CGWs) produced by individual supermassive black hole binaries in circular orbits using high-cadence timing observations of PSR J1713+0747. We observe this millisecond pulsar using the telescopes in the European Pulsar Timing Array with an average cadence of approximately 1.6 d over the period between 2011 April and 2015 July, including an approximately daily average between 2013 February and 2014 April. The high-cadence observations are used to improve the pulsar timing sensitivity across the gravitational wave frequency range of 0.008-5μHz. We use two algorithms in the analysis, including a spectral fitting method and a Bayesian approach. For an independent comparison, we also use a previously published Bayesian algorithm.We find that the Bayesian approaches provide optimal results and the timing observations of the pulsar place a 95 per cent upper limit on the sky-averaged strain amplitude of CGWs to be ≲3.5 × 10-13 at a reference frequency of 1 μHz.We also find a 95 per cent upper limit on the sky-averaged strain amplitude of low-frequency CGWs to be ≲1.4 × 10-14 at a reference frequency of 20 nHz.

Perera, B., Stappers, B., Babak, S., Keith, M., Antoniadis, J., Bassa, C., et al. (2018). Improving timing sensitivity in the microhertz frequency regime: limits from PSR J1713+0747 on gravitational waves produced by supermassive black hole binaries. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. LETTERS, 478(1), 218-227 [10.1093/mnras/sty1116].

Improving timing sensitivity in the microhertz frequency regime: limits from PSR J1713+0747 on gravitational waves produced by supermassive black hole binaries

Sesana, A.;Shaifullah, G.;
2018

Abstract

We search for continuous gravitational waves (CGWs) produced by individual supermassive black hole binaries in circular orbits using high-cadence timing observations of PSR J1713+0747. We observe this millisecond pulsar using the telescopes in the European Pulsar Timing Array with an average cadence of approximately 1.6 d over the period between 2011 April and 2015 July, including an approximately daily average between 2013 February and 2014 April. The high-cadence observations are used to improve the pulsar timing sensitivity across the gravitational wave frequency range of 0.008-5μHz. We use two algorithms in the analysis, including a spectral fitting method and a Bayesian approach. For an independent comparison, we also use a previously published Bayesian algorithm.We find that the Bayesian approaches provide optimal results and the timing observations of the pulsar place a 95 per cent upper limit on the sky-averaged strain amplitude of CGWs to be ≲3.5 × 10-13 at a reference frequency of 1 μHz.We also find a 95 per cent upper limit on the sky-averaged strain amplitude of low-frequency CGWs to be ≲1.4 × 10-14 at a reference frequency of 20 nHz.
Articolo in rivista - Articolo scientifico
Binaries: General; Gravitational waves; Pulsars: Individual: PSR J1713+0747; Quasars: Supermassive black holes; Stars: Black holes; Stars: Neutron;
English
218
227
10
Perera, B., Stappers, B., Babak, S., Keith, M., Antoniadis, J., Bassa, C., et al. (2018). Improving timing sensitivity in the microhertz frequency regime: limits from PSR J1713+0747 on gravitational waves produced by supermassive black hole binaries. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. LETTERS, 478(1), 218-227 [10.1093/mnras/sty1116].
Perera, B; Stappers, B; Babak, S; Keith, M; Antoniadis, J; Bassa, C; Caballero, R; Champion, D; Cognard, I; Desvignes, G; Graikou, E; Guillemot, L; Janssen, G; Karuppusamy, R; Kramer, M; Lazarus, P; Lentati, L; Liu, K; Lyne, A; Mckee, J; Osłowski, S; Perrodin, D; Sanidas, S; Sesana, A; Shaifullah, G; Theureau, G; Verbiest, J; Taylor, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/363381
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