Results 91 to 100 of about 18,154 (212)

Variations in $p$-Mode Parameters with Changing Onset-Time of a Large Flare

, 2009
It is expected that energetic solar flares releasing large amount of energy at the photosphere may be able to excite the acoustic ($p$-) modes of oscillations.
A. Ambastha, Abramenko, Ambastha, Braun, Corbard, Donea, Duvall, Haber, Hill, Howe, Komm, Komm, Komm, Leibacher, Mason, R. A. Maurya, Rajaguru, S. C. Tripathy, Yang, Zhao   +19 more
core   +1 more source

A note on the dosimetric interpretation of rigidity spectra for solar particle beams [PDF]

Dosimetric interpretation of flux/rigidity spectra for solar flare corpuscular ...
Schaefer, H. J.
core   +1 more source

Two Distinctly Different Characteristics of Flare-driven Coronal Rain Revealed from High-resolution Spectroscopic Imaging Observations with FISS/GST

The Astrophysical Journal
We report on a flare-driven coronal rain event observed along postflare loops during the decay phase of an X1.6-class solar flare. Although high-resolution studies of flare-driven coronal rain have been conducted, imaging spectroscopic studies are rare ...
Donguk Song, Eun-Kyung Lim, Jongchul Chae, Maria S. Madjarska, Masahito Kubo, Hannah Kwak, Juhyung Kang, Ryohtaroh T. Ishikawa, Kyoung-Sun Lee   +8 more
doaj   +1 more source

Helios 1 energetic particle observations of the solar gamma ray flare events of 7, 21 June 1980 and 3 June 1982 [PDF]

The observed characteristics of the energetic particles associated with the solar gamma-ray events of 3, 21 June 1980 and 3 June 1982 differ in several important aspects from the typical solar particle increases.
Mcdonald, F. B., Trainor, J. H., Vanhollebeke, M. A. I.   +2 more
core   +1 more source

Directionality of Solar Flare Accelerated Protons and Alpha Particles from Gamma-Ray Line Measurements

, 2002
The energies and widths of gamma-ray lines emitted by ambient nuclei excited by flare-accelerated protons and alpha particles provide information on the ions directionality and spectra, and on the characteristics of the interaction region.
Gerald H. Share, Jurgen Kiener, Nicolas de Sereville, Ronald J. Murphy, Share G. H., Werntz C.   +5 more
core   +3 more sources

Flares on TRAPPIST-1 Reveal the Spectrum of Magnetic Features on Its Surface

The Astrophysical Journal Letters
TRAPPIST-1 is an M8 dwarf hosting seven known exoplanets and is currently one of the most frequently observed targets of the James Webb Space Telescope (JWST).
Valeriy Vasilyev, Nadiia Kostogryz, Alexander I. Shapiro, Astrid M. Veronig, Benjamin V. Rackham, Christoph Schirninger, Julien de Wit, Ward Howard, Jeff Valenti, Adina D. Feinstein, Olivia Lim, Sara Seager, Laurent Gizon, Sami K. Solanki   +13 more
doaj   +1 more source

Parameterizations of Chromospheric Condensations in dG and dMe Model Flare Atmospheres

, 2017
The origin of the near-ultraviolet and optical continuum radiation in flares is critical for understanding particle acceleration and impulsive heating in stellar atmospheres. Radiative-hydrodynamic simulations in 1D have shown that high energy deposition
Allred, Joel C., Kowalski, Adam F.
core   +1 more source

Rising Near-ultraviolet Spectra in Stellar Megaflares

The Astrophysical Journal
Flares from M dwarf stars can attain energies up to 10 ^4 times larger than solar flares but are generally thought to result from similar processes of magnetic energy release and particle acceleration.
Adam F. Kowalski, Rachel A. Osten, Yuta Notsu, Isaiah I. Tristan, Antigona Segura, Hiroyuki Maehara, Kosuke Namekata, Shun Inoue   +7 more
doaj   +1 more source

The variation of solar proton energy spectra size distribution with heliolongitude [PDF]

A statistical study of the initial phases of 185 solar particle events was carried out using the data from cosmic ray experiments on IMP 4 and IMP 5. Special emphasis was placed on the identification of the associated solar flare, as the parent flare can
Masung, L. S., Mcdonald, F. B., Vanhollebeke, M. A. I.   +2 more
core   +1 more source

Multiwavelength imaging and spectroscopy of chromospheric evaporation in an M-class solar flare

, 2010
We study spectroscopic observations of chromospheric evaporation mass flows in comparison to the energy input by electron beams derived from hard X-ray data for the white-light M2.5 flare of 2006 July 6.
Baumgartner, D., Berkebile-Stoiser, S., Gömöry, P., Otruba, W., Pötzi, W., Rybak, J., Temmer, M., Veronig, A. M., Vrsnak, B.   +8 more
core   +1 more source