Results 11 to 20 of about 964 (178)

Coronal Mass Ejections and Type II Radio Emission Variability during a Magnetic Cycle on the Solar-type Star ϵ Eridani

The Astrophysical Journal, 2022
Abstract We simulate possible stellar coronal mass ejection (CME) scenarios over the magnetic cycle of ϵ Eridani (18 Eridani; HD 22049). We use three separate epochs from 2008, 2011, and 2013, and estimate the radio emission frequencies associated with these events.
Dúalta Ó Fionnagáin, Robert D. Kavanagh, Aline A. Vidotto, Sandra V. Jeffers, Pascal Petit, Stephen Marsden, Julien Morin, Aaron Golden   +7 more
openaire   +8 more sources

Solar energetic particles and radio burst emission [PDF]

Journal of Space Weather and Space Climate, 2017
We present a statistical study on the observed solar radio burst emission associated with the origin of in situ detected solar energetic particles. Several proton event catalogs in the period 1996–2016 are used.
Miteva Rositsa, Samwel Susan W., Krupar Vratislav   +2 more
doaj   +3 more sources

Solar Radio Bursts Associated with In Situ Detected Energetic Electrons in Solar Cycles 23 and 24

Universe, 2022
The first comprehensive analysis between the in situ detected solar energetic electrons (SEEs) from ACE/EPAM satellite and remotely observed radio signatures in solar cycles (SCs) 23 and 24 (1997–2019) is presented.
Rositsa Miteva, Susan W. Samwel, Svetoslav Zabunov   +2 more
doaj   +2 more sources

Deciphering Radio Emission from Solar Coronal Mass Ejections using High-fidelity Spectropolarimetric Radio Imaging

, 2023
Coronal mass ejections (CMEs) are large-scale expulsions of plasma and magnetic fields from the Sun into the heliosphere and are the most important driver of space weather. The geo-effectiveness of a CME is primarily determined by its magnetic field strength and topology.
Kansabanik, Devojyoti
openaire   +3 more sources

Bursts of kinetic Alfvén waves and coronal radio emission at 2–3 solar radii

2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC), 2015
Solar radio observations at 10–30 MHz have been carried out recently using radio telescopes UTR-2 (world's largest radio telescope at decametric wavelengths near Kharkov, Ukraine) and URAN-2 (Poltava, Ukraine). High sensitivity and time resolution of these observations allowed revealing many new interesting features of the coronal radio emission (V. N.
Yuriy Voitenko, Valentin Melnik, Viviane Pierrard   +2 more
openaire   +2 more sources

Isolated Sunspot with a Dark Patch in the Coronal Emission

Open Astronomy, 2012
On the base of the 17 GHz radio maps of the Sun taken with the Nobeyama Radio Heliograph we estimate plasma parameters in the specific region of the sunspot atmosphere in the active region AR 11312.
Bezrukov D. A., Ryabov B. I., Shibasaki K.   +2 more
doaj   +2 more sources

Estimating the lateral speed of a fast shock driven by a coronal mass ejection at the location of solar radio emissions

Astronomy & Astrophysics
Context. Fast coronal mass ejections (CMEs) can drive shock waves capable of accelerating electrons to high energies. These shock-accelerated electrons act as sources of electromagnetic radiation, often in the form of solar radio bursts. Recent findings suggest that radio imaging of solar radio bursts can provide a means to estimate the lateral ...
S. Normo, D. E. Morosan, E. K. J. Kilpua, J. Pomoell   +3 more
openaire   +4 more sources

A correlation Study of Coronal EUV Brightenings and Radio Emission Observed by Parker Solar Probe

, 2019
The dynamic nature of our host star is clearly observable in the solar corona. Different structures are visible in it (coronal loops, streamers, coronal holes), which have a direct relationship with changes that the Sun is experiencing in its interior and photosphere.
Martinez Oliveros, J. C., Pulupa, M., Malanushenko, A. V., Guevara Gómez, J. C., Bale, S., Bonnell, J. W., Dudok de Wit, Thierry, Goetz, K., Harvey, P., Macdowall, R. J., Malaspina, D.   +10 more
core   +3 more sources

AN ANALYSIS OF INTERPLANETARY SOLAR RADIO EMISSIONS ASSOCIATED WITH A CORONAL MASS EJECTION [PDF]

The Astrophysical Journal Letters, 2016
ABSTRACT Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth directed. Here, we report a rare instance with comprehensive in situ and remote sensing observations of a CME combining white-light, radio, and plasma measurements from four different vantage points. For
Krupar, V., Eastwood, J., Kruparova, O., Santolík, O., Soucek, J., Magdalenić, J., Vourlidas, A., Maksimovic, M., Bonnin, X., Bothmer, V., Mrotzek, N., Pluta, A., Barnes, D., Davies, J., Oliveros, J., Bale, S.   +15 more
openaire   +6 more sources

CORONAL JETS AS A CAUSE OF MICROWAVE NEGATIVE BURSTS

Solar-Terrestrial Physics, 2020
We have investigated the cause of three “isolated” negative radio bursts recorded one after another at several frequencies in the 1–17 GHz range at the Nobeyama Radio Observatory, Ussuriysk Astrophysical Observatory, and Learmonth Solar Observatory on ...
I.V. Kuzmenko
doaj   +1 more source