EDP Sciences
Free access
Volume 417, Number 1, April I 2004
Page(s) 181 - 188
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20040032

A&A 417, 181-188 (2004)
DOI: 10.1051/0004-6361:20040032

XMM-Newton spectral and timing observations of the millisecond pulsar PSR J0218+4232

N. A. Webb, J.-F. Olive and D. Barret

Centre d'Étude Spatiale des Rayonnements, CNRS/UPS, 9 avenue du Colonel Roche, 31028 Toulouse Cedex 04, France
(Received 17 March 2003 / Accepted 18 November 2003 )

We present XMM-Newton MOS imaging and PN timing data of the millisecond pulsar PSR J0218+4232 . We confirm the previously detected pulsations of PSR J0218+4232 and we show that the folded lightcurve is dependent on energy. We present the broad band ( 0.2-10.0 keV) spectrum of this millisecond pulsar, as well as the spectra of: the pulsed emission, the individual pulses, the interpulse and the non-pulsed region and we compare our results with previous data from Rosat, BeppoSAX and Chandra. We discuss the results of the spectral fitting in the context of recent pulsar models.

Key words: X-rays: stars -- stars: pulsars: individual: PSR J0218+4232 -- radiation mechanisms: non-thermal -- radiation mechanisms: thermal

Offprint request: N. A. Webb, natalie.webb@cesr.fr

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