Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 414, Issue 4, Pages 3134-3144Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2011.18610.x
Keywords
binaries: eclipsing; stars: evolution; stars: fundamental parameters; pulsars: general; pulsars: individual: PSR J2051-0827
Categories
Funding
- STFC
- Region Centre in France
- NWO
- Commonwealth of Australia
- European Union [236394]
- STFC [ST/G002487/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G002487/1] Funding Source: researchfish
Ask authors/readers for more resources
We have conducted radio timing observations of the eclipsing millisecond binary pulsar PSR J2051-0827 with the European Pulsar Timing Array network of telescopes and the Parkes radio telescope, spanning over 13 yr. The increased data span allows significant measurements of the orbital eccentricity, e = (6.2 +/- 1.3) x 10(-5), and composite proper motion, mu(t) = 7.3 +/- 0.4 mas yr(-1). Our timing observations have revealed secular variations of the projected semimajor axis of the pulsar orbit which are much more extreme than those previously published and of the orbital period of the system. Investigations of the physical mechanisms producing such variations confirm that the variations of the semimajor axis are most probably caused by classical spin-orbit coupling in the binary system, while the variations in orbital period are most likely caused by tidal dissipation leading to changes in the gravitational quadrupole moment of the companion.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available