The double pulsar system J0737-3039: Modulation of a by B at eclipse

被引：61

作者：

McLaughlin, MA ^{[1
]}

Lyne, AG

Lorimer, DR

Possenti, A

Manchester, RN

Camilo, F

Stairs, IH

Kramer, M

Burgay, M

D'Amico, N

Freire, PCC

Joshi, BC

Bhat, NDR

机构：

[1] Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England

[2] Osservatorio Astron Cagliari, INAF, I-09012 Capoterra, Italy

[3] CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia

[4] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

[5] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[6] Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Italy

[7] Natl Astron & Ionosphere Ctr, Arecibo Observ, Arecibo, PR 00612 USA

[8] Natl Ctr Astrophys, Pune 411007, Maharashtra, India

[9] MIT, Haystack Observ, Westford, MA 01886 USA

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 616卷 / 02期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

binaries : general; pulsars : general; pulsars : individual (PSR J0737-3039A; PSR J0737-3039B);

D O I：

10.1086/426813

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have investigated the eclipse of the 23 ms pulsar, PSR J0737-3039A, by its 2.8 s companion PSR J0737-3039B in the recently discovered double pulsar system using data taken with the Green Bank Telescope at 820 MHz. We find that the pulsed flux density at eclipse is strongly modulated with the periodicity of the 2.8 s pulsar. The eclipse occurs earlier and is deeper at those rotational phases of B when its magnetic axis is aligned with the line of sight than at phases when its magnetic axis is at right angles to the line of sight. This is consistent with the eclipse of A being due to synchrotron absorption by the shock-heated plasma surrounding B, the asymmetry arising from the higher plasma densities expected in the B magnetosphere's polar cusps.

引用

页码：L131 / L134

页数：4

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