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Title:
Change in the pulse component separation for PSR J1906+0746
Authors:
Desvignes, G.; Cognard, I.; Kramer, M.; Lyne, A.; Stappers, B.; Theureau, G.
Affiliation:
AA(Laboratoire de Physique et Chimie de l'Environnement (LPCE), CNRS-Orléans, France), AB(Laboratoire de Physique et Chimie de l'Environnement (LPCE), CNRS-Orléans, France), AC(University of Manchester, Jodrell Bank Observatory, Cheshire, SK11 9DL, UK), AD(University of Manchester, Jodrell Bank Observatory, Cheshire, SK11 9DL, UK), AE(Astronomical Institute 'Anton Pannekoek', University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands; Stichting ASTRON, Postbus 2, 7990 AA, Dwingeloo, The Netherlands), AF(Laboratoire de Physique et Chimie de l'Environnement (LPCE), CNRS-Orléans, France; GEPI, Paris Observatory France)
Publication:
40 YEARS OF PULSARS: Millisecond Pulsars, Magnetars and More. AIP Conference Proceedings, Volume 983, pp. 482-484 (2008). (AIPC Homepage)
Publication Date:
02/2008
Origin:
AIP
PACS Keywords:
Pulsars, Radiation mechanisms; polarization, Radio telescopes and instrumentation; heterodyne receivers, Neutron stars, Geodesy and gravity
DOI:
10.1063/1.2900280
Bibliographic Code:
2008AIPC..983..482D

Abstract

PSR J1906+0746 is a highly relativistic binary pulsar, discovered with the P-ALFA survey in June 2005 [4]. Within a such system, it is expected to observe geodetic precession with a high precession rate. Possible first signs of pulse profile evolution were observed using archival data of the Parkes MultiBeam Survey and by Kasian et al. [3]. By combining the data from the Nançay and Jodrell Bank Radiotelescopes, we report on the clear detection of pulse profiles changes, a shift between both components of the pulse at a rate of 2.1°+/-0.1° per year. However, only a marginal variation in the relative amplitude was found. We also noticed variations in the slope of the Polarisation Position Angle and in the circular polarisation in the main pulse area, using Nançay polarimetric data.
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