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February 2021

VLA Measurements of Faraday Rotation through a Coronal Mass Ejection Using Multiple Lines of Sight by J. E. Kooi et al.*

2021-02-16

The Sun is the main source of space weather, and one type of solar event that is critical to space weather is a coronal mass ejection. Coronal mass ejections (CMEs) are large eruptions of magnetized plasma from the Sun that produce energetic particles, which can cause geomagnetic storms on Earth. One method that has proven successful in determining the strength and structure of the coronal magnetic field is Faraday rotation […]

Propagation Effects in Quiet Sun Observations at Meter Wavelengths
by R. Sharma and D. Oberoi

2021-02-02

The quiet Sun coronal emission dominantly comes from thermal bremsstrahlung. As this radiation traverses the coronal medium on its way to the Earthbound observer, the coronal optical depth, τ, along typical ray paths is neither low enough to be approximated as optically thin, nor high enough to be treated as optically thick. On its way to the observer, it gets modified substantially due to propagation effects —primarily refraction and scattering—through the […]

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Atacama Large Millimeter Array (ALMA) (10) chromosphere (12) coronal magnetic field (14) Coronal Mass Ejection (CME) (43) density fluctuations (14) electron cyclotron maser (ECM) (4) energetic electrons (14) fine spectral structures (4) free-free emission (8) Giant Metrewave Radio Telescope (GMRT) (3) gyrosynchrotron emission (13) hard X-ray (4) ionosphere (4) Langmuir waves (8) Low Frequency Array (LOFAR) (21) microwave emission (15) Murchison Widefield Array (MWA) (10) Nancay Radio Heliograph (NRH) (5) Nobeyama Radioheliograph (NoRH) (8) Parker Solar Probe (PSP) (11) particle acceleration (8) plasma radio emission (6) Quasi-periodic pulsations (QPP) (4) quiet Sun (9) radio spikes (11) radio wave scattering (13) shock wave (7) simulations (4) Solar Dynamics Observatory (SDO) (4) solar energetic particles (SEP) (24) solar flare (29) Solar Orbiter (SolO) (6) solar radio emission (20) space weather (4) STEREO (9) submillimeter emission (4) turbulence (18) Type III solar radio bursts (65) Type II solar radio bursts (37) Type I solar radio bursts (7) Type IV solar radio bursts (11) Ukrainian T-shaped radio telescope (UTR-2) (4) Ultraviolet (UV)/extreme ultraviolet (EUV) emissions (6) Wind (spacecraft) (6) zebra-structure (7)
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  • Multi-spacecraft Radio Observations Trace the Heliospheric Magnetic Field by D. L. Clarkson et al.

    2025-04-25

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