2016MNRAS.462.1029S

Query : 2016MNRAS.462.1029S

2016MNRAS.462.1029S - Mon. Not. R. Astron. Soc., 462, 1029-1038 (2016/October-2)

21 year timing of the black-widow pulsar J2051-0827.

SHAIFULLAH G., VERBIEST J.P.W., FREIRE P.C.C., TAURIS T.M., WEX N., OSLOWSKI 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 D., POSSENTI A. and TIBURZI C.

Abstract (from CDS):

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 x 10^- 3^ cm^- 3^ 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.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: close - binaries: eclipsing - pulsars: general - pulsars: individual: PSR J2051-0827 - pulsars: individual: PSR J2051-0827

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSR J0023-7203J Psr 00 23 59.40735 -72 03 58.7914           ~ 91 1
2 PSR J0023-72O Psr 00 24 04.637 -72 04 53.71           ~ 66 1
3 PSR J0610-2100 Psr 06 10 13.602953 -21 00 27.74435           ~ 116 0
4 PSR J1731-18 Psr 17 31 17.6072 -18 47 32.740           ~ 46 1
5 PSR J1807-2459A Psr 18 07 20.36 -24 59 52.6           ~ 30 0
6 PSR J1959+2048 Psr 19 59 36.7643141520 +20 48 14.896407996   21.08 20.16 19.53 18.79 G: 854 3
7 V* LY Aqr Psr 20 51 07.52058 -08 27 37.6100           ~ 236 2

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