Results 41 to 50 of about 964 (178)
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 +4 more
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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 +7 more
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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 +7 more
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Unprecedented 19 Day Type IV Radio Burst as a Corotating Electron Reservoir
The Astrophysical Journal LettersWe report a hectometric (0.5–3 MHz) type IV continuum observed over nearly 19 days (2025 August 21–September 9) in three successive visibility windows as the source corotates with the Sun—first at Solar Orbiter, then 12 days later in the near-Earth ...
Vratislav Krupar +13 more
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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
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Coronal Conditions for the Occurrence of Type II Radio Bursts [PDF]
, 2022 Type II radio bursts are generally observed in association with flare-generated or coronal-mass-ejection-driven shock waves. The exact shock and coronal conditions necessary for the production of type II radio emission are still under debate. Shock waves
Mann Gottfried +7 more
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The Astrophysical Journal, 2013 Type II solar radio bursts are the primary radio emissions generated by shocks and they are linked with impending space weather events at Earth. We simulate type II bursts by combining elaborate three-dimensional MHD simulations of realistic coronal mass ejections (CMEs) at the Sun with an analytic kinetic radiation theory developed recently.
J. M. Schmidt +2 more
openaire +1 more source
Plasma Instability in Front of Ejected Energetic Electrons and Type III Solar Radio Bursts
The Astrophysical JournalType 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 +9 more
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The location and kinematics of the emission line regions in Active Galactic Nuclei [PDF]
, 2008 This thesis contains the results from a study of the optical emission lines of various samples of active galactic nuclei (AGN). We have used three separate techniques to determine the precise kinematics and the relative location of the emission line ...
Mullaney, J R, Mullaney, J.R.
core
Small-scale Inhomogeneity Effects on Coherent Solar Radio Emission
The Astrophysical JournalThe coherent radio emission mechanism of solar radio bursts (SRBs) is one of the most complicated and controversial topics in solar physics. To clarify the mechanism(s) of different types of SRBs, (radio-) wave excitation by energetic electrons in ...
Xiaowei Zhou +7 more
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