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http://hdl.handle.net/20.500.12386/24370
Titolo: | 21 year timing of the black-widow pulsar J2051-0827 | Autori: | Shaifullah, G. Verbiest, J. P. W. Freire, P. C. C. Tauris, T. M. Wex, N. Osłowski, S. Stappers, B. W. Bassa, C. G. Caballero, R. N. Champion, D. J. Cognard, I. Desvignes, G. Graikou, E. Guillemot, L. Janssen, G. H. Jessner, A. Jordan, C. Karuppusamy, R. Kramer, M. Lazaridis, K. Lazarus, P. Lyne, A. G. McKee, J. W. PERRODIN, DELPHINE POSSENTI, ANDREA Tiburzi, C. |
Data pubblicazione: | 2016 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 462 | Fascicolo: | 1 | Da pagina:: | 1029 | Abstract: | Timing results for the black-widow pulsar J2051-0827 are presented, using a 21 year data set from four European Pulsar Timing Array telescopes and the Parkes radio telescope. This data set, which is the longest published to date for a black-widow system, allows for an improved analysis that addresses previously unknown biases. While secular variations, as identified in previous analyses, are recovered, short-term variations are detected for the first time. Concurrently, a significant decrease of ∼ 2.5 × 10<SUP>- 3</SUP> cm<SUP>- 3</SUP> pc in the dispersion measure associated with PSR J2051-0827 is measured for the first time and improvements are also made to estimates of the proper motion. Finally, PSR J2051-0827 is shown to have entered a relatively stable state suggesting the possibility of its eventual inclusion in pulsar timing arrays. | URI: | http://hdl.handle.net/20.500.12386/24370 | URL: | https://academic.oup.com/mnras/article/462/1/1029/2589997 https://arxiv.org/pdf/1607.04167.pdf |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stw1737 | Bibcode ADS: | 2016MNRAS.462.1029S | Fulltext: | open |
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