Do we see free precessing pulsars?
Andrej ade 1,
Mirjam Galii 1 and
Massimo Calvani 2
Received 9 July 1996 / Accepted 24 February 1997
The evidence for free precessing neutron stars is discussed. Her X-1 and the Crab pulsar show periodic modulations in their light curves which can be ascribed to free precession. We show that both measured periods can be interpreted in terms of a unique model. It is interesting to note that the same model also explains well the eccentricities of rotating planets.
Key words: pulsars: individual: Her X-1 stars: neutron stars: rotation
© European Southern Observatory (ESO) 1997
Online publication: May 5, 1998