Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29608
Titolo: | Improving timing sensitivity in the microhertz frequency regime: limits from PSR J1713+0747 on gravitational waves produced by supermassive black hole binaries | Autori: | Perera, B. B. P. Stappers, B. W. Babak, S. Keith, M. J. Antoniadis, J. Bassa, C. G. Caballero, R. N. Champion, D. J. Cognard, I. Desvignes, G. Graikou, E. Guillemot, L. Janssen, G. H. Karuppusamy, R. Kramer, M. Lazarus, P. Lentati, L. Liu, K. Lyne, A. G. McKee, J. W. Osłowski, S. PERRODIN, DELPHINE Sanidas, S. A. Sesana, A. Shaifullah, G. Theureau, G. Verbiest, J. P. W. Taylor, S. R. |
Data pubblicazione: | 2018 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 478 | Fascicolo: | 1 | Da pagina:: | 218 | 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<SUP>-13</SUP> 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<SUP>-14</SUP> at a reference frequency of 20 nHz. <P /> | URI: | http://hdl.handle.net/20.500.12386/29608 | URL: | https://academic.oup.com/mnras/article/478/1/218/4990951 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/sty1116 | Bibcode ADS: | 2018MNRAS.478..218P | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
sty1116.pdf | pdf editoriale | 531.01 kB | Adobe PDF | Visualizza/apri |
Page view(s)
53
controllato il 26-apr-2024
Download(s)
14
controllato il 26-apr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.