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Title: An estimate of the magnetic field strength associated with a solar coronal mass ejection from low frequency radio observations

We report ground based, low frequency heliograph (80 MHz), spectral (85-35 MHz), and polarimeter (80 and 40 MHz) observations of drifting, non-thermal radio continuum associated with the 'halo' coronal mass ejection that occurred in the solar atmosphere on 2013 March 15. The magnetic field strengths (B) near the radio source were estimated to be B ≈ 2.2 ± 0.4 G at 80 MHz and B ≈ 1.4 ± 0.2 G at 40 MHz. The corresponding radial distances (r) are r ≈ 1.9 R {sub ☉} (80 MHz) and r ≈ 2.2 R {sub ☉} (40 MHz).
Authors:
; ; ;  [1] ;  [2]
  1. Indian Institute of Astrophysics, Bangalore 560034 (India)
  2. 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:
22369981
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 796; 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; MAGNETIC FIELDS; MASS; POLARIMETRY; SOLAR ATMOSPHERE; SOLAR CORONA; SPECTRA; SUN