Results 41 to 50 of about 2,802,659 (186)

Fibre structure of decametric type II radio bursts as a manifestation of emission propagation effects in a disturbed near-solar plasma [PDF]

Annales Geophysicae, 2009
This paper addresses the fine structure of solar decametric type II radio bursts in the form of drifting narrowband fibres on the dynamic spectrum. Observations show that this structure appears in those events where there is a coronal mass ejection ...
A. N. Afanasiev, A. N. Afanasiev
doaj   +1 more source

Finding Novel Precursors for Solar Wind Stream Interaction Regions With Interpretable Deep Learning

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Solar wind stream interaction regions (SIRs) drive recurrent geomagnetic storms, yet most existing catalogs rely on expert inspection and simple thresholds that are subjective and can miss events with complex morphologies. We present SIREN (SIR Encoder Network), a lightweight Transformer‐based model for per‐timestep SIR detection from in situ ...
Prateek Mayank, Yogesh, Enrico Camporeale, D. Chakrabarty, Lan K. Jian, Gregory G. Howes, Thomas E. Berger   +6 more
wiley   +1 more source

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

Type‐III Solar Radio Bursts at Mars: A 16.5‐Year Catalog From Mars Express‐MARSIS at 0.1–5.5 MHz

Space Weather, Volume 24, Issue 10, October 2026.
Abstract The most intense radio feature in the Solar System are the solar Type‐III radio bursts, which are associated with electron beams that propagate along open magnetic field lines. Although solar radio bursts have been studied since the 1940s, observations remain mainly restricted within 1 AU.
Beatriz Sánchez‐Cano, Samuel Carter, Mark Lester, Olivier Witasse, Caitriona M. Jackman, Sophie Musset, Baptiste Cecconi, Louis Siebenaler, Simon Joyce, Luis Alberto Cañizares, Andrea Cicchetti, Alexandra R. Fogg, Peter Gallagher, Christopher Gerekos, Yuki Harada, Alessandro Ippolito, Immanuel Jebaraj, Dikshita Meggi, Roberto Orosei, Hermann Opgenoorth, Jeff Plaut, Catherine Regan, Katerina Stergiopoulou   +22 more
wiley   +1 more source

Kinetic Processes to Radio Burst: First Observational-driven Study in Coronal Loops

The Astrophysical Journal
Understanding the origin of coherent solar radio bursts requires linking macroscopic coronal structures with the kinetic processes responsible for wave generation.
Mehdi Yousefzadeh, Marian Karlický, Artem Koval, Alena Zemanova, Yao Chen, Jun Lin   +5 more
doaj   +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

An Operational Daily‐Filtered Dominion Radio Astrophysical Observatory F10.7 cm Solar Radio Flux Product

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract The F10.7 solar radio flux density, or F10.7, is a disk‐integrated measure of the Sun's total emission at 10.7 cm (2.8 GHz) and is a widely‐used proxy of solar activity. F10.7 emissions primarily originate from the Sun's upper chromosphere and lower corona. High‐frequency, transient “radio bursts” can dramatically increase the magnitude of F10.
C. Kuester, O. M. Coddington, C. Lindholm, C. L. Peck   +3 more
wiley   +1 more source

Plasma Instability in Front of Ejected Energetic Electrons and Type III Solar Radio Bursts

The Astrophysical Journal
Type III radio bursts are signatures of the fluxes of near-relativistic electrons ejected during solar flares. These bursts are frequently observed by spacecraft such as the Parker Solar Probe. It has been traditionally believed that these electron beams
Vladimir Krasnoselskikh, Immanuel Christopher Jebaraj, Tom Robert Franck Cooper, Andrii Voschepynets, Thierry Dudok de Wit, Marc Pulupa, Forrest Mozer, Oleksiy Agapitov, Michael Balikhin, Stuart D. Bale   +9 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

Cosmic Ray Anisotropy Generated by the June 22nd 2015 Interplanetary Events

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract On 22 June 2015, the near Earth interplanetary space was perturbed by a series of high‐speed streamers and interplanetary coronal mass ejections associated with an active region and two low‐latitude coronal holes. The interaction of these disturbances gave rise to the complex solar wind structure observed at 1 au.
A. Lara, K. P. Arunbabu, T. Niembro
wiley   +1 more source