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Article
Origin of the 30 THz Emission Detected During the Solar Flare on 2012 March 13 at 17:20 UT
Solar observations in the infrared domain can bring important clues on the response of the low solar atmosphere to primary energy released during flares. At present, the infrared continuum has been detected at...
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Article
Statistical Evidence for Contributions of Flares and Coronal Mass Ejections to Major Solar Energetic Particle Events
Solar energetic particle (SEP) events are related to flares and coronal mass ejections (CMEs). This work is a new investigation of statistical relationships between SEP peak intensities – deka-MeV protons and ...
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Article
Joint Measurements of Flare Flux Densities at 210 – 212 GHz by Two Different Radio Telescopes
Multiple-beam observations of solar flares at submillimeter wavelengths need detection with at least four beams to derive the flux density \(\mbox{\)F\(} \) of the emitting source,...
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Article
Solar flares at submillimeter wavelengths
We discuss the implications of the first systematic observations of solar flares at submillimeter wavelengths, defined here as observing wavelengths shorter than 3 mm (frequencies higher than 0.1 THz). The eve...
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Chapter
Origin of the Submillimeter Radio Emission During the Time-Extended Phase of a Solar Flare
Solar flares observed in the 200 – 400 GHz radio domain may exhibit a slowly varying and time-extended component which follows a short (few minutes) impulsive phase and can last for a few tens of minutes to mo...
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Article
Origin of the Submillimeter Radio Emission During the Time-Extended Phase of a Solar Flare
Solar flares observed in the 200 – 400 GHz radio domain may exhibit a slowly varying and time-extended component which follows a short (few minutes) impulsive phase and can last for a few tens of minutes to mo...
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Article
Particle Acceleration and Propagation in Strong Flares without Major Solar Energetic Particle Events
Solar energetic particles (SEPs) detected in space are statistically associated with flares and coronal mass ejections (CMEs). But it is not clear how these processes actually contribute to the acceleration an...
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Article
Energetic Particle Acceleration and Propagation in Strong CME-Less Flares
Flares and coronal mass ejections (CMEs) contribute to the acceleration and propagation of solar energetic particles (SEP) detected in the interplanetary space, but the exact roles of these phenomena are yet t...
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Article
Radio Emission of Flares and Coronal Mass Ejections
We review recent progress on our understanding of radio emission from solar flares and coronal mass ejections (CMEs) with emphasis on those aspects of the subject that help us address questions about energy re...
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Article
Electron Acceleration and Transport During the November 5, 1998 Solar Flare At ∼13:34 UT
This paper deals with a detailed analysis of spectral and imaging observations of the November 5, 1998 (Hα 1B, GOES M1.5) flare obtained over a large spectral range, i.e., from hard X-rays to radiometric waveleng...
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Chapter and Conference Paper
Magnetic Activity Associated with Radio Noise Storms
As it crossed the solar disk in May and June 1998, AR 8227 was tracked by TRACE, Yohkoh, SOHO, and many ground-based observatories. We have studied how the evolution of the magnetic field resulted in changes in a...
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Article
Correlated fast time structures at millimeter waves and hard X-rays during a solar burst
We present an analysis of the time profiles detected during a solar impulsive flare, observed at one-millimeter radio frequency (48 GHz) and in three hard X-ray energy bands (25–62, 62–111, and 111–325 keV) wi...
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Article
Magnetic Activity Associated With Radio Noise Storms
As it crossed the solar disk in May and June 1998, AR 8227 was tracked by TRACE, Yohkoh, SOHO, and many ground-based observatories. We have studied how the evolution of the magnetic field resulted in changes in a...
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Article
Foreword
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Article
Imaging diagnostics of solar non-thermal particles
Non-thermal hard X-ray, gamma-ray and radio emission are the most direct signatures of the presence of energetic particles in the solar atmosphere. This paper lays emphasis on hard X-ray and radio imaging data...
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Article
Fine scale temporal structures in solar hard X-ray bursts observed by PHEBUS
We report here on preliminary results of a systematic study of fast temporal fluctuations in “impulsive” and “extended” solar X-ray bursts observed by PHEBUS at energies around 100 keV. Subsecond timescales ar...
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Chapter and Conference Paper
Observations of high-energy (E≥10 MeV) gamma-rays with the PHEBUS instrument
The PHEBUS instrument aboard GRANAT has observed several high energy (E ≥ 10 MeV) gamma-ray bursts since 1990. We describe here the characteristics of these high energy bursts with respect of the longitude of ...
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Chapter
Imaging Diagnostics of Solar Non-Thermal Particles
Non-thermal hard X-ray, gamma-ray and radio emission are the most direct signatures of the presence of energetic particles in the solar atmosphere. This paper lays emphasis on hard X-ray and radio imaging data...
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Chapter
Fine Scale Temporal Structures in Solar Hard X-Ray Bursts Observed by Phebus
We report here on preliminary results of a systematic study of fast temporal fluctuations in “impulsive” and “extended” solar X-ray bursts observed by PHEBUS at energies around 100 keV. Subsecond timescales ar...
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Article
Hard X-ray and γ-ray observations of solar flares with the Phebus experiment
The Phebus experiment on board the GRANAT satellite provides temporal and spectral observations of solar and cosmic γ-ray bursts in the 0.1 ≃ 100 MeV nominal energy range. The experiment was turned on January ...
