Results 121 to 130 of about 11,539 (164)

Magnetic fields on the quiet Sun [PDF]

open access: yesCentral European Astrophysical Bulletin, 2011
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Acute effects of Tai Chi with different practice emphasis on autonomic activity. [PDF]

open access: yesFront Sports Act Living
Duan D, Huang H, Li W, Xiao C, Wang D.
europepmc   +1 more source

The fine structure of the quiet Sun

Solar Physics, 1985
The observed properties of the small-scale features visible in the quiet photosphere — the granulation, of convective origin, and the network bright points, associated with kG magnetic fields — are described. The known properties of the magnetic flux tubes associated with network bright points are also presented.
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An Extra Quiet Sun

Scientific American, 2010
The article discusses the solar cycle which is an eleven-year period in which the Sun's activity fluctuates. According to the author, sunspots, which are magnetic markers on the Sun's surface, provide helioseismologists with visual cues to the cycle's evolution.
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Activity in the quiet Sun

Solar Physics, 1979
Macrospicules have been observed in Hα and He i D3, on the disk and above the limb. In 1975, a rate of 1400 (A⊙day)−1 is inferred, and the ratio of equatorial to polar rates ≲ 2. D3 intensities are a few × 10−3 of the disk center, and do not decrease in coronal holes. The ratio of Hα to D3 intensities is ≈ 10.
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The Quiet-Sun Corona

2019
Total solar eclipses provide a unique view of the faint solar corona, without the bright over-powering emission from the solar disk, enabling us to explore the electron density, temperature, thermodynamics, and related fundamental physics (Habbal et al. 2010a, 2011, 2013).
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Radio Observations of the Quiet Sun

2004
While radio observations of the Sun have mostly focused on active region phenomena, they also contribute unique data to our knowledge of the quiet Sun, in particular through accurate measurements of the temperature as a function of height in the atmosphere and through the measurement of nonthermal emissions from chromospheric and coronal heating events.
Christoph U. Keller, Säam Krucker
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The Quiet Sun

Physics Today, 1974
An up-to-date textbook of solar physics is presented. The solar structure and processes, and the interior are described along with the photosphere, the chromosphere, and the corona. The strongest Fraunhofer lines, visible coronal lines, and coronal UV, XUV, and X-ray lines are listed.
Edward G. Gibson, Robert D. Chapman
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