Results 71 to 80 of about 438 (164)

Imaging a Large Coronal Loop Using Type U Solar Radio Burst Interferometry

The Astrophysical Journal
Solar radio U-bursts are generated by electron beams traveling along closed magnetic loops in the solar corona. Low-frequency (
Jinge Zhang, Hamish A. S. Reid, Eoin Carley, Laurent Lamy, Pietro Zucca, Peijin Zhang, Baptiste Cecconi   +6 more
doaj   +1 more source

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

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

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

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

Weak Solar Radio Bursts from the Solar Wind Acceleration Region Observed by the Parker Solar Probe and Its Probable Emission Mechanism

The Astrophysical Journal
The Parker Solar Probe (PSP) provides us with an unprecedentedly close approach to the observation of the Sun and hence the possibility of directly understanding the elementary process that occurs on the kinetic scale of particles' collective interaction
Ling Chen, Bing Ma, DeJin Wu, Xiaowei Zhou, Marc Pulupa, PeiJin Zhang, Pietro Zucca, Stuart D. Bale, Justin C. Kasper, SuPing Duan   +9 more
doaj   +1 more source

First Detection of Low-frequency Striae in Interplanetary Type III Radio Bursts

The Astrophysical Journal Letters
We report the first detection of type III solar radio burst striae in the 30–80 kHz range, observed by the Cluster-4 spacecraft during an exceptionally quiet solar period.
Vratislav Krupar, Eduard P. Kontar, Jan Soucek, Lynn B. Wilson III, Adam Szabo, Oksana Kruparova, Hamish A. S. Reid, Mychajlo Hajos, David Pisa, Ondrej Santolik, Milan Maksimovic, Jolene S. Pickett   +11 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

New Insights into Type-I Solar Noise Storms from High Angular Resolution Spectroscopic Imaging with the Upgraded Giant Metrewave Radio Telescope

The Astrophysical Journal
Type-I solar noise storms are perhaps the most commonly observed active radio emissions from the Sun at meter-wavelengths. Noise storms have a long-lived and wideband continuum background with superposed islands of much brighter narrowband and short ...
Surajit Mondal, Devojyoti Kansabanik, Divya Oberoi, Soham Dey   +3 more
doaj   +1 more source