Astronomy and Astrophysics – Astronomy
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995icar..115...97l&link_type=abstract
Icarus (ISSN 0019-1035), vol. 115, no. 1, p. 97-108
Astronomy and Astrophysics
Astronomy
15
Arc Melting, Electric Discharges, Solar Corona, Spherules, Astronomical Models, Drift Rate, Flux Density, Lightning, Stony Meteorites
Scientific paper
We present a rudimentary theoretical assessment of electrical discharge heating as a candidate mechanism for the formation of chondrules in the solar nebula. The discharge model combines estimates of the properties of the nebula, a mechanism for terrestrial thunderstorm electrification, and some fundamental electrical properties of gases. Large uncertainties in the model inputs limit these calculations to order-or-magnitude accuracy. Despite the uncertainty, it is possible to estimate an upper limit to the efficiency of nebular discharges at melting millimeter-sized stony objects. We find that electrical arcs analogous to terrestrial lightning could have occurred in the nebula, but that under most conditions these discharges probably could not have melted chondrules. Despite our difficulties, we believe the topic worthy of further investigation and suggest some experiments which could improve our understanding of nebular discharges.
Keil Klaus
Love Stanley G.
Scott Edward R. D.
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