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Long-term Variations in the Pulse Emission from PSR J0737-3039B

Citation

Burgay, M and Possenti, A and Manchester, RN and Kramer, M and McLaughlin, MA and Lorimer, DR and Stairs, IH and Joshi, BC and Lyne, AG and Camilo, F and D'Amico, N and Freire, PCC and Sarkissian, JM and Hotan, AW and Hobbs, GB, Long-term Variations in the Pulse Emission from PSR J0737-3039B, The Astrophysical Journal, 624, (2 II) pp. L113-L116. ISSN 0004-637X (2005) [Refereed Article]

DOI: doi:10.1086/430668

Abstract

Analysis of 20 months of observations at the Parkes radio telescope shows secular changes in the pulsed emission from J0737-3039B, the 2.77 s pulsar of the double-pulsar system. Pulse profiles are becoming single-peaked in both bright phases of the orbital modulation, although there is no clear variation in overall pulse width. The shape of the orbital modulation is also varying systematically, with both bright phases shrinking in longitude by ∼7° yr-1. However, the combined span of the two bright phases is relatively constant, and together they are shifting to higher longitudes at a rate of ∼3° yr-1. We discuss the possible contributions of geodetic precession and periastron advance to the observed variations. © 2005. The American Astronomical Society. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:Galactic Astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Hotan, AW (Dr Aidan Hotan)
ID Code:45128
Year Published:2005
Web of Science® Times Cited:47
Deposited By:Physics
Deposited On:2007-07-03
Last Modified:2007-07-03
Downloads:0

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