EDP Sciences
Free access
Volume 432, Number 3, March IV 2005
Page(s) 1091 - 1100
Section Planets and planetary systems
DOI http://dx.doi.org/10.1051/0004-6361:20040417

A&A 432, 1091-1100 (2005)
DOI: 10.1051/0004-6361:20040417

Radio emissions from terrestrial planets around white dwarfs

A. J. Willes1 and K. Wu2

1  British Antarctic Survey, Cambridge, UK and School of Physics, University of Sydney, NSW 2006, Australia
    e-mail: A.Willes@physics.usyd.edu.au
2  Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Surrey, UK
    e-mail: kw@mssl.ucl.ac.uk

(Received 10 March 2004 / Accepted 19 November 2004)

Terrestrial planets in close orbits around magnetic white dwarf stars are potential electron-cyclotron maser sources, by analogy to planetary radio emissions generated from the electrodynamic interaction between Jupiter and the Galilean moons. We present predictions of radio flux densities and the number of detectable white-dwarf/terrestrial-planet systems, and discuss a scenario for their formation.

Key words: stars: planetary systems -- stars: white dwarfs -- radiation mechanisms: non-thermal -- radio continuum: general

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