Results 91 to 100 of about 1,559,234 (209)
The Daniel K. Inouye Solar Telescope Captures Ambient Shock Waves Ignited by Magnetic Vortices
The Astrophysical JournalOne of the first high-cadence chromospheric image sequences recorded with the recently commissioned Daniel K. Inouye Solar Telescope (DKIST) has revealed propagating arc-shaped bright fronts of a few hundred kilometers width. These bright fronts maintain
Catherine E. Fischer +14 more
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Forward modeling solar spectra onto Doppler images of λ And
Astronomy & AstrophysicsContext. Due to their high chromospheric activity and photometric variability, RS CVn-type binaries are ideal laboratories for studying stellar surface structures and the corresponding stellar activity relations.
Adebali Ö., Pietrow A. G. M.
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The Astrophysical JournalUniversal small-scale solar activity in the quiet region is suggested to be a potential source of solar wind and the upper solar atmosphere. Here, with the high-resolution 174 Å imaging observations from the Solar Orbiter/Extreme Ultraviolet Imager, we ...
Yadan Duan +4 more
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CHROMOSPHERIC HEATING by ACOUSTIC WAVES COMPARED to RADIATIVE COOLING [PDF]
, 2016 Acoustic and magnetoacoustic waves are among the possible candidate mechanisms that heat the upper layers of the solar atmosphere. A weak chromospheric plage near the large solar pore NOAA 11005 was observed on 2008 October 15, in the Fe I 617.3 nm and ...
Jurcak J. +5 more
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The Effect of the Chromospheric Temperature on Coronal Heating
, 2022 Recent observational and numerical studies show a variety of thermal structures in the solar chromosphere. Given that the thermal interplay across the transition region is a key to coronal heating, it is worth investigating how different thermal ...
Suzuki, Takeru K. +2 more
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Passive solar space and water heating systems
, 1990 The performance of three types of passive solar feature has been studied; fifteen Roof-Space Collectors on an estate of low energy houses at the Milton Keynes Energy Park, 101m2 of Thermosyphoning Air Panels at a county primary school in Nazeing ...
Lo, S. N. G.
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The Astrophysical JournalAccurately assessing the balance between acoustic wave energy fluxes and radiative losses is critical for understanding how the solar chromosphere is thermally regulated.
J. M. da Silva Santos +5 more
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Constraining magnetic heating in the solar chromosphere
, 2022 The chromospheric and coronal heating problems remain one of the foremost open questions in solar and stellar physics: how are the outer layers of the Sun heated from a few thousand kelvin in the photosphere to the million-degree corona? Radiation alone is not capable of transporting the required energy to explain observations from the inner layers ...
openaire +1 more source
Self-heating and its possible relationship to chromospheric heating in slowly rotating stars [PDF]
, 2010 The efficiency of non-modal self-heating by acoustic wave perturbations is examined. Considering different kinds of kinematically complex velocity patterns, we show that non-modal instabilities arising in these inhomogeneous flows may lead to significant
Osmanov, Zaza +2 more
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Energy Transport and Heating by Nonthermal Electrons in a Turbulent Solar Flare Environment
The Astrophysical JournalThe impulsive phase of a solar flare is known to generate strong turbulence and to transfer magnetic energy into accelerated electrons. Recognizing the importance of angular diffusion on the dynamics of the accelerated electrons, we extend previous ...
A. Gordon Emslie, Eduard P. Kontar
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