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Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2011

A magnetic thrust action on small bodies orbiting a pulsar

Résumé


Aims: We investigate the electromagnetic interaction of a relativistic stellar wind with small bodies in orbit around the star.
Methods: Based on our work on the theory of Alfvén wings to relativistic winds presented in a companion paper, we estimate the force exerted by the associated current system on orbiting bodies and evaluate the resulting orbital drift.
Results: This Alfvénic structure is found to have no significant influence on planets or smaller bodies orbiting a millisecond pulsar. On the time scale of millions of years, it can however affect the orbit of bodies with a diameter of 100 km around standard pulsars with a period P ~ 1 s and a magnetic field B ~ 108 T. Kilometer-sized bodies experience drastic orbital changes on a time scale of 104 years.

Dates et versions

hal-03742691 , version 1 (02-08-2022)

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Fabrice Mottez, Jean Heyvaerts. A magnetic thrust action on small bodies orbiting a pulsar. Astronomy and Astrophysics - A&A, 2011, 532, pp.22. ⟨10.1051/0004-6361/201117079⟩. ⟨hal-03742691⟩
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