Results 11 to 20 of about 28,762 (292)
Magnetic Structure of Sunspots [PDF]
Living Reviews in Solar Physics, 2011 In this review we give an overview about the current state-of-knowledge of the magnetic field in sunspots from an observational point of view. We start by offering a brief description of tools that are most commonly employed to infer the magnetic field ...
Juan M. Borrero, Kiyoshi Ichimoto
doaj +8 more sources
Can Sunspot Activity Affect the Population Dynamics of Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)? [PDF]
InsectsWhether there is a correlation between sunspots and an impact on insects has long been a subject of debate. As a worldwide pest, the cotton bollworm can feed on a variety of plants and cause great harm to agriculture.
Jian Huang, Xiaojun Wang
doaj +2 more sources
The transition region above sunspots
Geoscience Letters, 2018 Over decades, sunspots and their fine structures have been studied in detail at the photospheric level with different ground-based telescopes, as the surface of the Sun primarily emits light in the visible wavelengths.
Hui Tian, Tanmoy Samanta, Jingwen Zhang
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Oscillations and Waves in Sunspots
Living Reviews in Solar Physics, 2015 A magnetic field modifies the properties of waves in a complex way. Significant advances have been made recently in our understanding of the physics of sunspot waves with the help of high-resolution observations, analytical theories, as well as numerical
Manuel Collados, Elena Khomenko
exaly +2 more sources
Sunspots During the Maunder Minimum From Machina Coelestis by Hevelius [PDF]
Solar Physics, 2015 We revisited the sunspot observations published by Johannes Hevelius in his book Machina Coelestis (1679) corresponding to the period of 1653 – 1675 (just in the middle of the Maunder Minimum).
Víctor Manuel Sánchez Carrasco +1 more
exaly +2 more sources
, 2010 Galileo's telescopic discoveries, and especially his observation of sunspots, caused great debate in an age when the heavens were thought to be perfect and unchanging. Christoph Scheiner, a Jesuit mathematician, argued that sunspots were planets or moons
Reeves, Eileen +3 more
core +2 more sources
Differential Rotation of Individual Sunspots and Pores
The Astrophysical JournalThe analysis of the rotation rate of individual sunspots and pores was performed according to the data from the processing of observations by the Solar Dynamics Observatory/Helioseismic and Magnetic Imager in the period 2010–2024.
Andrey G. Tlatov, Kseniya A. Tlatova
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, 2023 Taking as its starting point the distinctive megalithic remains of the Neolithic and Bronze Age, Sunspots is a carefully edited long-term photographic study of these fragile rural landscapes where the meaning and belonging of everything feels contested.
Arnold, William
core +6 more sources
The Shape of Sunspots and Solar Activity Cycles [PDF]
Solar Physics, 2022 The article presents the results of the analysis of the geometric characteristics of sunspots for the period of 15 – 24 Cycles of activity according to the data of Kislovodsk (1956 – 2021) and Royal Greenwich (1918 – 1972) Observatories.
A. Tlatov
semanticscholar +1 more source