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

Journal Article · Wed Nov 20 00:00:00 EST 2013 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/778/1/30· OSTI ID:22342025

Ramesh, R.; Kishore, P.; Barve, Indrajit V.; Kathiravan, C. ^[1]; Mulay, Sargam M. ^[2]

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1. Indian Institute of Astrophysics, Bangalore 560 034 (India)
2. Inter-University Centre for Astronomy and Astrophysics, Pune 411 007 (India)

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 ☉}.

• OSTI ID: 22342025
• Journal Information: Astrophysical Journal, Vol. 778, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DISTANCE
ELECTRON DENSITY
EMISSION
MAGNETIC FIELDS
MASS
MHZ RANGE
PLASMA
SOLAR CORONA
SUN
VELOCITY
VISIBLE RADIATION