Results 81 to 90 of about 2,802,659 (186)

LOFAR tied-array imaging of Type III solar radio bursts [PDF]

, 2015
Context. The Sun is an active source of radio emission which is often associated with energetic phenomena such as solar flares and coronal mass ejections (CMEs). At low radio frequencies (< 100 MHz), the Sun has not been imaged extensively because of
Mann, Gottfried, Zucca, P, MacKinnon, A L, Carley, E P, Kerdraon, A, Konovalenko, A A, Butcher, Harvey, Morosan, D E, Fallows, R A, Rucker, H O, Bisi, M M, Gallagher, P T   +11 more
core   +1 more source

Study of solar brightness profiles in the 18–26 GHz frequency range with INAF radio telescopes

Astronomy & Astrophysics
Context. One of the most important objectives of solar physics is to gain a physical understanding of the solar atmosphere, whose structure can also be described in terms of the density (N) and temperature (T) distributions of the atmospheric matter. Several multi-frequency analyses have shown that the characteristics of these distributions are still ...
M. Marongiu, A. Pellizzoni, S. Righini, S. Mulas, R. Nesti, A. Burtovoi, M. Romoli, G. Serra, G. Valente, E. Egron, G. Murtas, M. N. Iacolina, A. Melis, S. L. Guglielmino, S. Loru, P. Zucca, A. Zanichelli, M. Bachetti, A. Bemporad, F. Buffa, R. Concu, G. L. Deiana, C. Karakotia, A. Ladu, A. Maccaferri, P. Marongiu, M. Messerotti, A. Navarrini, A. Orfei, P. Ortu, M. Pili, T. Pisanu, G. Pupillo, P. Romano, A. Saba, L. Schirru, C. Tiburzi, L. Abbo, F. Frassati, M. Giarrusso, G. Jerse, F. Landini, M. Pancrazzi, G. Russano, C. Sasso, R. Susino   +45 more
openaire   +3 more sources

Coronal Diagnostics via Modeling Periodic-beaded Stripes of Solar Radio Bursts

The Astrophysical Journal
Using high-resolution data from the Chashan Broadband Solar Radio Spectrometer at meter wavelengths of the Chinese Meridian Project—Phase II, C. Li et al.
Chuanyang Li, Yao Chen, Bing Wang, Yutong Li, Xiangliang Kong, Hao Ning, Sulan Ni, Shuwang Chang, Zichuan Li, Yang Gao, Zhe Cui, Li Deng, Jingye Yan, Fabao Yan   +13 more
doaj   +1 more source

Enigmatic Centi-SFU and mSFU Nonthermal Radio Transients Detected in the Middle Corona

The Astrophysical Journal
Decades of solar coronal observations have provided substantial evidence for accelerated particles in the corona. In most cases, the location of particle acceleration can be roughly identified by combining high spatial and temporal resolution data from ...
Surajit Mondal, Bin Chen, Sijie Yu, Xingyao Chen, Peijin Zhang, Dale Gary, Marin M. Anderson, Judd D. Bowman, Ruby Byrne, Morgan Catha, Sherry Chhabra, Larry D’Addario, Ivey Davis, Jayce Dowell, Gregg Hallinan, Charlie Harnach, Greg Hellbourg, Jack Hickish, Rick Hobbs, David Hodge, Mark Hodges, Yuping Huang, Andrea Isella, Daniel C. Jacobs, Ghislain Kemby, John T. Klinefelter, Matthew Kolopanis, Nikita Kosogorov, James Lamb, Casey Law, Nivedita Mahesh, Brian O’Donnell, Kathryn Plant, Corey Posner, Travis Powell, Vinand Prayag, Andres Rizo, Andrew Romero-Wolf, Jun Shi, Greg Taylor, Jordan Trim, Mike Virgin, Akshatha Vydula, Sandy Weinreb, Scott White, David Woody, Thomas Zentmeyer   +46 more
doaj   +1 more source

Solar and stellar coronal plasmas [PDF]

, 1989
Progress in observational, theoretical, and radio studies of coronal plasmas is summarized. Specifically work completed in the area of solar and stellar magnetic fields, related photospheric phenomena and the relationships between magnetism, rotation ...
Golub, Leon
core  

Analyzing Electron Beam-Induced Coronal Extreme Ultraviolet Emissions and Solar Radio Bursts Type III During M-Class Flares: A Preliminary Study

Journal of Physics: Conference Series
Abstract Solar flare events are triggered by the process of magnetic reconnection, which leads to a sudden release of stored magnetic energy and intensifies the electromagnetic emissions across the entire spectrum. In this preliminary study, we investigate the role of accelerated electron beams from acceleration site in enhancing Extreme
WZA Wan Mokhtar, AK Ariffin, ANM Daud, MF Umar, R Umar   +4 more
openaire   +1 more source

High-harmonic Plasma Emission Induced by Electron Beams in Weakly Magnetized Plasmas

The Astrophysical Journal
Electromagnetic radiation at higher harmonics of the plasma frequency ( ω ∼ n ω _pe , n > 2) has been occasionally observed in type II and type III solar radio bursts, yet the underlying mechanism remains undetermined.
Chuanyang Li, Yao Chen, Zilong Zhang, Hao Ning, TangMu Li   +4 more
doaj   +1 more source

A Relook on the Effects of Coronal Mass Ejections (CMEs) on Solar Radio Emissions

Coronal mass ejections (CMEs) are associated with a whole host of radio bursts caused by nonthermal electrons accelerated during the eruption process. Radio bursts at low frequencies (< 15 MHz) are of particular interest because they are associated with energetic CMEs that travel far into the interplanetary (IP) medium and affect Earth’s spacial ...
openaire   +1 more source

Propagation and damping of MHD waves in the solar atmosphere [PDF]

, 2015
Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
core   +1 more source

A High-frequency Type II Radio Burst Associated with an X2.3 Class Flare

The Astrophysical Journal
Radio observations provide a powerful diagnostic of the solar corona, enabling investigations of dynamic phenomena associated with solar flares, coronal mass ejections (CMEs), and shock waves.
Divya Paliwal, Anshu Kumari, Vishwa Vijay Singh, Dinesh Mishra, Pritam Das, Nadiya K   +5 more
doaj   +1 more source