Results 1 to 10 of about 5,860 (269)
Solar-Terrestrial Physics, 2018 The aim of this paper is to structure and extend the knowledge of solar chromospheric sources of oscillations in the solar wind and their relationships with pulsations registered in the magnetosphere.
Chelpanov A.A. +3 more
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Where are Sunspots? The Practical Method of Galileo as an example of Mental Model
Zagadnienia Filozoficzne w Nauce, 2019 After the publication of Sidereus Nuncius, in the controversy with Ch. Scheiner, Galileo developed several arguments on behalf of the hypothesis that sunspots are contiguous to the surface of the Sun, and presented them in his Istoria e dimostrazioni ...
Tadeusz Sierotowicz
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Deciphering Solar Magnetic Activity: Spotting Solar Cycle 25
Frontiers in Astronomy and Space Sciences, 2017 We present observational signatures of solar cycle 25 onset. Those signatures are visibly following a migratory path from high to low latitudes. They had starting points that are asymmetrically offset in each hemisphere at times that are 21–22 years ...
Scott W. McIntosh, Robert J. Leamon
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Exploring spatial and temporal patterns across solar cycles: Focusing on active longitudes
Astronomy & AstrophysicsContext. Active longitudes (ALs) are proposed behavioural patterns on the Sun, whereby certain solar phenomena tend to appear at preferred longitudes, with these longitudes shifting over time on a scale of a few Carrington rotations (CRs).
Császár K. +3 more
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Modelling solar radial velocities and photometric variability with SOAP
Astronomy & AstrophysicsContext. Stellar activity remains one of the main limitations in the detection of Earth-like planets using radial velocity (RV) measurements. The Sun, as the only star for which surface features can be spatially resolved, offers a unique testbed for ...
Barka A. +7 more
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Magnetic structure of coronal dark halos
Astronomy & AstrophysicsContext. At low coronal temperatures around or below 1 MK distinct areas in the surroundings of active regions (ARs) show emission at a level significantly below the emission coming from the quiet Sun (QS). These areas are referred to as dark halos, dark
Nölke J. D. +7 more
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In-flight calibration of RADEM, the JUICE mission radiation monitor
Astronomy & AstrophysicsContext. The RADiation-hard Electron Monitor (RADEM) aboard the JUpiter ICy moons Explorer (JUICE) mission, launched on April 14, 2023, measures high-energy protons and electrons during the cruise phase and will continue to do so during the nominal ...
Pinto M. +9 more
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The magneto-convective nature of dark striations and moving bright grains at the edge of pores
Astronomy & AstrophysicsContext. High-resolution observations of the Sun reveal a multitude of small-scale striations throughout the photosphere. While these features are well observed in broad-band intensity images, spectropolarimetric observations remain rare. Aims.
Hölken J. +10 more
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The Hearth of the World: The Sun before Astrophysics
UniverseThis paper presents a historical overview of conceptions about the Sun in Western astronomical and cosmological traditions before the advent of spectroscopy and astrophysics. Rather than studying general cultural ideas, we focus on the concepts developed
Gábor Kutrovátz
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Turbulent convection as a significant hidden provider of magnetic helicity in solar eruptions. [PDF]
Sci Rep, 2023 Toriumi S, Hotta H, Kusano K.
europepmc +1 more source