Results 91 to 100 of about 1,290,320 (212)

Microwave imaging of quasi-periodic pulsations at flare current sheet

Nature Communications, 2022
Quasi-periodic pulsations (QPPs) are frequently detected in solar and stellar flares, but the underlying physical mechanisms are still to be ascertained.
Yuankun Kou, Xin Cheng, Yulei Wang, Sijie Yu, Bin Chen, Eduard P. Kontar, Mingde Ding   +6 more
doaj   +1 more source

Konus-Wind and Helicon-Coronas-F Observations of Solar Flares

, 2014
Results of solar flare observations obtained in the Konus-Wind experiment from November, 1994 to December, 2013 and in the Helicon Coronas-F experiment during its operation from 2001 to 2005, are presented.
Aptekar, R. L., Charikov, Yu. E., Frederiks, D. D., Golenetskii, S. V., Kokomov, A. A., Pal'shin, V. D., Sokolova, Z. Ya., Svinkin, D. S., Tsvetkova, A. E., Ulanov, M. V.   +9 more
core   +1 more source

Observations and Interpretations of Energetic Neutral Hydrogen Atoms from the December 5, 2006 Solar Event [PDF]

, 2010
We discuss recently reported observations of energetic neutral hydrogen atoms (ENAs) from an X9 solar flare/coronal mass ejection event on 5 December 2006, located at E79.
Barghouty, A. F., Cohen, C. M. S., Cummings, A. C., Labrador, A. W., Leske, R. A., Mewaldt, R. A., Shih, A. Y., Stone, E. C., von Rosenvinge, T. T., Wiedenbeck, M. E.   +9 more
core   +1 more source

Quasi-periodic Pulsations in the Most Powerful Solar Flare of Cycle 24 [PDF]

, 2018
Quasi-periodic pulsations (QPPs) are common in solar flares and are now regularly observed in stellar flares. We present the detection of two different types of QPP signals in the thermal emission light curves of the X9.3-class solar flare SOL2017-09 ...
D. Kolotkov, C. Pugh, A. Broomhall, V. Nakariakov   +3 more
semanticscholar   +1 more source

The White-light Emissions in Two X-class Flares Observed by ASO-S and CHASE

The Astrophysical Journal Letters
The white-light continuum emissions in solar flares (i.e., white-light flares) are usually observed on the solar disk but, in a few cases, off the limb.
Ying Li, Zhichen Jing, De-Chao Song, Qiao Li, Jun Tian, Xiaofeng Liu, Ya Wang, M. D. Ding, Andrea Francesco Battaglia, Li Feng, Hui Li, Weiqun Gan   +11 more
doaj   +1 more source

Detecting Solar Neutrino Flare in Megaton and km^3 detectors

, 2009
To foresee a solar flare neutrino signal we infer its upper and lower bound. The upper bound was derived since a few years by general energy equipartition arguments on observed solar particle flare.
Daniele Fargion, Fargion, Fargion, Fargion, Grechnev, Kistler, Paola Di Giacomo   +6 more
core   +1 more source

Application of the Deep Convolutional Neural Network to the Forecast of Solar Flare Occurrence Using Full-disk Solar Magnetograms

Astrophysical Journal, 2018
In this study, we present the application of the Convolutional Neural Network (CNN) to the forecast of solar flare occurrence. For this, we consider three CNN models (two pretrained models, AlexNet and GoogLeNet, and one newly proposed model). Our inputs
E. Park, Y. Moon, Seulki Shin, Kangwoo Yi, Daye Lim, Harim Lee, Gyungin Shin   +6 more
semanticscholar   +1 more source

First Quantitative Results on the Response of Green and Red Line Dayglow Emissions to Solar Flares of Different Magnitudes

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Flares originate from the impulsive release of magnetic energy in the solar atmosphere. The rise in X‐ray flux enhances ionization/electron content in the upper atmosphere, modifying the photochemical and dynamical processes that govern the ionosphere‐thermosphere behavior.
Komal, Duggirala Pallamraju
wiley   +1 more source

An overview of solar flare results from COMPTEL [PDF]

, 1994
The COMPTEL experiment on the Compton Gamma Ray Observatory (CGRO) has been operating in orbit since April of 1991. During that time, COMPTEL has observed several large flares, the most notable of which were several X‐class flares which took place in ...
McConnell, Mark L
core   +1 more source

Energy Release and Initiation of Sunquake in C-class Flare

, 2014
We present analysis of C7.0 solar flare of Febrary 17, 2013, revealing a strong helioseismic response (sunquake) caused by a very compact impact in the photosphere. This is the weakest known C-class flare generating a sunquake event.
Kosovichev, A. G., Sharykin, I. N., Zimovets, I. V.   +2 more
core   +1 more source