Extraterrestrial lightning in atmospheric dust clouds

Details Extraterrestrial lightning in atmospheric dust clouds Extraterrestrial lightning in atmospheric dust clouds

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf....8h&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.8

Physics

Scientific paper

Lightning is present in all solar system planets. Discharge phenomena occurs in dust devils on Mars, and on Earth also in the mineral clouds of volcano plumes. Cloud formation outside our solar system is possible in objects with much higher temperatures then cloud formation on Earth or Jupiter: Brown dwarfs and extrasolar planets form clouds made of mixed materials and of a distribution of grain sizes. These clouds are globally neutral obeying dust-gas charge equilibrium which is, on short timescales, inconsistent with the observation of stochastic ionization events of the solar system planets. We argue that a significant volume of the clouds in brown dwarfs and extrasolar planets is susceptible to local discharge events.

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