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Title: Low-frequency observations of drifting, non-thermal continuum radio emission associated with the solar coronal mass ejections

Low-frequency (80 MHz) imaging and spectral (≈85-20 MHz) observations of moving type IV radio bursts associated with coronal mass ejections (CMEs) from the Sun on three different days are reported. The estimated drift speed of the bursts is in the range ≈150-500 km s{sup –1}. We find that all three bursts are most likely due to second harmonic plasma emission from the enhanced electron density in the associated white-light CMEs. The derived maximum magnetic field strength of the latter is B ≈ 4 G at a radial distance of r ≈ 1.6 R {sub ☉}.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Indian Institute of Astrophysics, Bangalore 560 034 (India)
  2. Inter-University Centre for Astronomy and Astrophysics, Pune 411 007 (India)
  3. Department of Physics, The Catholic University of America and NASA Goddard Space Flight Center, Code 671, Greenbelt, MD 20771 (United States)
Publication Date:
OSTI Identifier:
22342025
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 778; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DISTANCE; ELECTRON DENSITY; EMISSION; MAGNETIC FIELDS; MASS; MHZ RANGE; PLASMA; SOLAR CORONA; SUN; VELOCITY; VISIBLE RADIATION