Results 31 to 40 of about 27,428 (205)
Regularized Energy-Dependent Solar Flare Hard X-Ray Spectral Index [PDF]
Solar Physics, 2005 13 pages; 5 figures, Solar Physics in ...
Kontar, E.P., MacKinnon, A.L.
openaire +3 more sources
Patterns of X-Ray and γ-Ray Flares: From Blazar to Magnetar and Sun
The Astrophysical JournalUsing Gaussian process methods, we analyzed the light curves of three extreme solar X-ray flares observed by the RHESSI satellite. Their variability characteristics were then compared with those of HXMT-HE X-ray burst (XRB; in SGR 1935+2154) associated ...
Haiyun Zhang +8 more
doaj +1 more source
The Efficiency of Electron Acceleration during the Impulsive Phase of a Solar Flare
The Astrophysical Journal Letters, 2023 Solar flares are known to be prolific electron accelerators, yet identifying the mechanism(s) for such efficient electron acceleration in solar flare (and similar astrophysical settings) presents a major challenge.
Eduard P. Kontar +3 more
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The correlation between soft and hard X-rays component in flares: from the Sun to the stars
, 2007 In this work we study the correlation between the soft (1.6--12.4 keV, mostly thermal) and the hard (20--40 and 60--80 keV, mostly non-thermal) X-ray emission in solar flares up to the most energetic events, spanning about 4 orders of magnitude in peak ...
Favata, F. +3 more
core +1 more source
COMPTEL gamma ray and neutron measurements of solar flares [PDF]
, 1993 COMPTEL on the Compton Gamma Ray Observatory has measured the flux of x‐rays and neutrons from several solar flares. These data have also been used to image the Sun in both forms of radiation.
Bennett, K +13 more
core +2 more sources
Analysis of the Consecutive X‐Ray Flares Effects on the Lower Ionosphere
Space WeatherX‐ray is a critical factor in generating electrons in the lower ionosphere, however, the cumulative effects of consecutive X‐ray flares on the lower ionosphere remain understudied due to the scarcity of historical events.
Shuai Wang +5 more
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X‐Ray Observations of Solar Long‐Duration Flares
The Astrophysical Journal, 2005 Yohkoh X-ray observations during the several-hour decay of six large solar flares show that the main emitting region is in the form of a bright loop-top source whose spatial extent well after the impulsive stage explains most of the broadening of S XV and Ca XIX X-ray lines, which would otherwise imply nonthermal velocities of 100 km s-1 or more ...
Kjh Phillips +3 more
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Very High Resolution Solar X-ray Imaging Using Diffractive Optics
, 2012 This paper describes the development of X-ray diffractive optics for imaging solar flares with better than 0.1 arcsec angular resolution. X-ray images with this resolution of the \geq10 MK plasma in solar active regions and solar flares would allow the ...
A. Y. Shih +24 more
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Imaging X-ray Polarimeter for Solar Flares (IXPS) [PDF]
Experimental Astronomy, 2011 We describe the design of a balloon-borne Imaging X-ray Polarimeter for Solar flares (IX PS). This novel instrument, a Time Projection Chamber (TPC) for photoelectric polarimetry, will be capable of measuring polarization at the few percent level in the 20-50 keV energy range during an M- or X class flare, and will provide imaging information at the ...
Michael Hosack +8 more
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On the expected $\gamma$-ray emission from nearby flaring stars [PDF]
, 2017 Stellar flares have been extensively studied in soft X-rays (SXR) by basically every X-ray mission. Hard X-ray (HXR) emission from stellar superflares, however, have only been detected from a handful of objects over the past years. One very extreme event
Hoischen, Clemens, Ohm, Stefan
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