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X-ray observations of PSR J0218+4232 and of PSR B1937+21

Published online by Cambridge University Press:  12 April 2016

Frank Verbunt ,
Helen M. Johnston ,
A.G. de Bruyn  and
Michiel van der Klis
Frank Verbunt
Affiliation:
Astronomical Institute, Postbox 80.000, 3508 TA Utrecht, the Netherlands
Helen M. Johnston
Affiliation:
Astronomical Institute, Postbox 80.000, 3508 TA Utrecht, the Netherlands
A.G. de Bruyn
Affiliation:
Radiosterrenwacht, Postbox 2, 7990 Dwingeloo, and Kapteyn, Astronomical Institute, Groningen, the Netherlands
Michiel van der Klis
Affiliation:
Astronomical Institute, Kruislaan 403, 1098 SJ Amsterdam, the Netherlands

Extract

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Navarro et al. (1995) have discovered a 2.3 ms radio pulsar in a 2.0 day orbit around a low-mass companion. An interesting feature of this pulsar, PSR J0218+4232, is that radio emission is discovered throughout the pulse period; this is taken by Navarro et al. as an indication that the pulsar magnetic field is almost aligned with the rotation axis, and may also be related to the rather high radio luminosity of this pulsar, L400MHZ > 2700 mJy kpc2. The dispersion measure DM = 61.25pc cm−3 indicates a minimum distance of 5.7 kpc, according to the model for the free electron distribution in the Galaxy by Taylor and Cordes (1993).

Type
Part 5 High Energy Phenomena
Information
International Astronomical Union Colloquium , Volume 160: Pulsars: Problems and Progress , 1996 , pp. 353 - 354
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

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Verbunt, F., Kuiper, L., Belloni, T., Johnston, H.M., de Bruyn, A.G., Hermsen, W., van der Klis, M. 1996, Astron. Astroph., submittedGoogle Scholar