Results 31 to 40 of about 10,736 (185)

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.
openaire   +2 more sources

Excitation of Multiperiodic Kink Motions in Solar Flare Loops: Possible Application to Quasiperiodic Pulsations

The Astrophysical Journal Letters, 2023
Magnetohydrodynamic (MHD) waves are often invoked to interpret quasiperiodic pulsations (QPPs) in solar flares. We study the response of a straight flare loop to a kink-like velocity perturbation using three-dimensional MHD simulations and forward model ...
Mijie Shi, Bo Li, Shao-Xia Chen, Mingzhe Guo, Shengju Yuan   +4 more
doaj   +1 more source

The Absolute Abundance of Iron in the Solar Corona [PDF]

, 2000
We present a measurement of the abundance of Fe relative to H in the solar corona using a technique which differs from previous spectroscopic and solar wind measurements.
Arnaud M., Fludra A., J. W. Brosius, M. R. Kundu, Mewe R., R. J. Thomas, S. M. White, Veck N. J.   +7 more
core   +3 more sources

ELECTRON CYCLOTRON MASER EMISSION IN CORONAL ARCHES AND SOLAR RADIO TYPE V BURSTS

The Astrophysical Journal, 2013
Solar radio type V bursts were classified as a special spectral class based on their moderately long duration, wide bandwidth, and sense of polarization opposite of associated type III bursts. However, type V bursts are also closely related to the preceding type III bursts.
J. F. Tang, D. J. Wu, C. M. Tan
openaire   +1 more source

A Type II Radio Burst Driven by a Blowout Jet on the Sun

The Astrophysical Journal, 2023
Type II radio bursts are often associated with coronal shocks that are typically driven by coronal mass ejections (CMEs) from the Sun. Here we conduct a case study of a type II radio burst that is associated with a C4.5-class flare and a blowout jet, but
Zhenyong Hou, Hui Tian, Wei Su, Maria S. Madjarska, Hechao Chen, Ruisheng Zheng, Xianyong Bai, Yuanyong Deng   +7 more
doaj   +1 more source

Auto Recognition of Solar Radio Bursts Using the C-DCGAN Method

Frontiers in Physics, 2021
Solar radio bursts can be used to study the properties of solar activities and the underlying coronal conditions on the basis of the present understanding of their emission mechanisms. With the construction of observational instruments, around the world,
Weidan Zhang, Fabao Yan, Fabao Yan, Fuyun Han, Ruopu He, Enze Li, Zhao Wu, Yao Chen   +7 more
doaj   +1 more source

3D Structure of Microwave Sources from Solar Rotation Stereoscopy vs Magnetic Extrapolations

, 2011
We use rotation stereoscopy to estimate the height of a steady-state solar feature relative to the photosphere, based on its apparent motion in the image plane recorded over several days of observation.
Alissandrakis, Dale E. Gary, De Rosa, DeVore, Fleishman, Fleishman, Gelfreikh, Gelu M. Nita, Gregory D. Fleishman, Haimin Wang, Ju Jing, Kaltman, Leonid V. Yasnov, Li, Mok, Schmidt, Sergey V. Lesovoi, Uralov, Vladimir M. Bogod, Wheatland   +19 more
core   +1 more source

LOFAR tied-array imaging and spectroscopy of solar S bursts [PDF]

, 2015
Context. The Sun is an active source of radio emission that is often associated with energetic phenomena ranging from nanoflares to coronal mass ejections (CMEs).
Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Bentum, M. J., Bernardi, G., Bisi, M. M., Bonafede, A., Breitling, F., Broderick, J. W., Brouw, W. N., Butcher, H. R., Ciardi, B., de Geus, E., Eislöffel, J., Falcke, H., Fallows, R., Frieswijk, W., Gallagher, P. T., Garrett, M. A., Grießmeier, J., Gunst, A. W., Hessels, J. W. T., Hoeft, M., Karastergiou, A., Kerdraon, A., Kondratiev, V. I., Konovalenko, A. A., Kuper, G., MacKinnon, A.L., Magdalenić, J., Mann, G., McKay-Bukowski, D., McKean, J. P., Morosan, D. E., Munk, H., Orru, E., O’Flannagain, A., Paas, H., Pizzo, R., Polatidis, A. G., Reid, H., Rucker, H. O., Scaife, A. M. M., Sluman, J., Tasse, C., Thidé, B., Toribio, M. C., van Leeuwen, J., Vermeulen, R., Vocks, C., Zarka, P., Zucca, P.   +52 more
core   +8 more sources

RETRACTED: Quantitative prediction of type II solar radio emission from the Sun to 1 AU

Geophysical Research Letters, 2016
Coronal mass ejections (CMEs) are frequently associated with shocks and type II solar radio bursts. Despite involving fundamental plasma physics and being the archetype for collective radio emission from shocks, type II bursts have resisted detailed ...
J. M. Schmidt, Iver H. Cairns
doaj   +1 more source

Periodicities in the coronal rotation and sunspot numbers

, 2011
The present study is an attempt to investigate the long term variations in coronal rotation by analyzing the time series of the solar radio emission data at 2.8 GHz frequency for the period 1947 - 2009. Here, daily adjusted radio flux (known as Penticton
Altrock, Altrock, Badalyan, Badalyan, Bocchialini, Brajša, Brajša, Brajša, Chandra, Chandra, Cooper, Covington, Dupree, El-Raey, Fisher, Gömöry, Hansen, Hari Om Vats, Hathaway, Hathaway, Henze, Howard, Insley, Jain, Javaraiah, Kane, Karachik, Kariyappa, Kozuka, Lewis, Mehta, Mouradian, Mulec, Navarro-Peralta, Parker, Roša, Rybák, Satish Chandra, Sime, Sýkora, Tapping, Timothy, Vats, Vats, Vats, Waldemier, Weber, Weber, Zaatri   +48 more
core   +1 more source