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Interferometry of Solar Flares at 3-mm Wavelength

Published online by Cambridge University Press:  03 August 2017

M. R. Kundu ,
S. M. White ,
N. Gopalswamy  and
J. Lim
M. R. Kundu
Affiliation:
Department of Astronomy, University of Maryland, College Park, MD 20742, U.S.A.
S. M. White
Affiliation:
Department of Astronomy, University of Maryland, College Park, MD 20742, U.S.A.
N. Gopalswamy
Affiliation:
Department of Astronomy, University of Maryland, College Park, MD 20742, U.S.A.
J. Lim
Affiliation:
Department of Astronomy, University of Maryland, College Park, MD 20742, U.S.A.

Abstract

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We describe a set of millimeter interferometric observations of solar flares carried out in conjunction with GRO experiments during the 1991 June Campaign of the Max'91 Program. We show evidence that millimeter emission probes the most energetic (MeV) electrons in solar flares; we also find that in the same flare there can be both impulsive nonthermal and gradual thermal millimeter emission. Millimeter emission usually occurs at the steep rise phase of the hard X-ray emitting electrons (25-100 KeV). There appears to exist some delay between BIMA mm-emission onset and GRO-BATSE 25-100 KeV X-ray emission. Both results have implications for the particle acceleration process.

Keywords

Sun: flaresSun: particle emissionSun: radio radiation
Type
Part 1: Infrared Diagnostics of the Solar Atmosphere and Solar Activity
Information
Symposium - International Astronomical Union , Volume 154: Infrared Solar Physics , 1994 , pp. 131 - 135
Copyright
Copyright © Kluwer 1994 

References

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