Results 11 to 20 of about 18,154 (212)
High-resolution solar flare X-ray spectra
The Astrophysical Journal, 1979 High spectral resolution solar flare spectra have been recorded by four Bragg crystal spectrometers flown by the Naval Research Laboratory on a spacecraft launched 1979 February 24 by the Air Force. The wavelength ranges discussed in the Letter are 1.82--1.97 A, 2.98--3.07 A, and 3.14--3.24 A.
G. A. Doschek, R. W. Kreplin, U. Feldman
openaire +3 more sources
SOLAR FLARE COMPOSITION AND THERMODYNAMICS FROM RESIK X-RAY SPECTRA [PDF]
The Astrophysical Journal, 2014 7 ...
B. Sylwester +4 more
openaire +4 more sources
Solar flare X-ray spectra between 7.8 and 23.0 angstroms
The Astrophysical Journal, 1980 Abstract : We present high resolution x-ray spectra taken during a large solar flare on 10 June 1979. Many lines of highly ionized iron are resolved and identified for the first time in solar spectra. Lines with a wide range of excitation temperatures are found to have a similar time development during the flare's rapid rise phase.
D. L. McKenzie +6 more
openaire +3 more sources
Particle Acceleration and Their Escape into the Heliosphere in Solar Flares with Open Magnetic Field
The Astrophysical Journal, 2023 Energetic particle populations in the solar corona and in the heliosphere appear to have different characteristics even when produced in the same solar flare.
Mykola Gordovskyy +4 more
doaj +1 more source
The Astrophysical Journal, 2023 We often find spectral signatures of chromospheric cold plasma ejections accompanied by flares in a wide range of spatial scales in the solar and stellar atmospheres.
Yuji Kotani +6 more
doaj +1 more source
Modeling Solar Energetic Neutral Atoms from Solar Flares and CME-driven Shocks
The Astrophysical Journal, 2023 We examine the production of energetic neutral atoms (ENAs) in solar flares and coronal mass ejection (CME)-driven shocks and their subsequent propagation to 1 au. Time profiles and fluence spectra of solar ENAs at 1 au are computed for two scenarios: (1)
Gang Li +7 more
doaj +1 more source
Solar Flare X-ray Source Motion as a Response to Electron Spectral Hardening [PDF]
, 2013 Context: Solar flare hard X-rays (HXRs) are thought to be produced by nonthermal coronal electrons stopping in the chromosphere, or remaining trapped in the corona.
Brown, J. +4 more
core +4 more sources
The Astrophysical Journal, 2023 Solar flares are complex phenomena emitting all types of electromagnetic radiation and accelerating particles on timescales of minutes, converting magnetic energy to thermal, radiative, and kinetic energy through magnetic reconnections.
Crisel Suarez, Christopher S. Moore
doaj +1 more source
THE SOLAR FLARE CHLORINE ABUNDANCE FROM RESIK X-RAY SPECTRA [PDF]
The Astrophysical Journal, 2011 The abundance of chlorine is determined from X-ray spectra obtained with the RESIK instrument on {\em CORONAS-F} during solar flares between 2002 and 2003. Using weak lines of He-like Cl, \ion{Cl}{16}, between 4.44 and 4.50 , and with temperatures and emission measures from {\em GOES} on an isothermal assumption, we obtained $A({\rm Cl}) = 5.75 \pm 0.
Sylwester, B. +3 more
openaire +2 more sources
Characteristics of energetic solar flare electron spectra
The Astrophysical Journal, 1989 A 55 event survey of energy spectra of 0.1-100 MeV interplanetary electrons originating from solar flares as measured by two spectrometers onboard the ISEE 3 (ICE) spacecraft for the years 1978-1982 has been completed. Spectra generated using the maximum flux of a given event in each energy channel were restricted to events with a well-defined flux ...
Dan Moses +3 more
openaire +1 more source