EDP Sciences
Free access
Volume 425, Number 3, October III 2004
Page(s) 1143 - 1145
Section Celestial mechanics and astrometry
DOI http://dx.doi.org/10.1051/0004-6361:20041270

A&A 425, 1143-1145 (2004)
DOI: 10.1051/0004-6361:20041270

Research Note

Celestial position of the companion of PSR J1740-5340

C. G. Bassa1 and B. W. Stappers2, 3

1  Astronomical Institute, Utrecht University, PO Box 80 000, 3508 TA Utrecht, The Netherlands
    e-mail: c.g.bassa@astro.uu.nl
2  Stichting ASTRON, Postbus 2, 7990 AA Dwingeloo, The Netherlands
3  Astronomical Institute "Anton Pannekoek", University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
    e-mail: bws@science.uva.nl

(Received 11 May 2004 / Accepted 20 July 2004)

We present optical astrometry of archival ground and space based imaging of the companion to PSR J1740-5340. The optical position of the companion is significantly offset from the timing position of the pulsar. We briefly investigate the effects of this inconsistency on other timing parameters and compare our position with an improved position of PSR J1740-5340 from recent, preliminary, timing results.

Key words: stars: pulsars: individual: PSR J1740-5340 -- astrometry -- Galaxy: globular clusters: individual: NGC 6397

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© ESO 2004