Sunspots and their cycle
نویسندگان
چکیده
These dark blemishes on stars are key to understanding the interaction of strong magnetic fields and dynamic plasma.
منابع مشابه
Skin Cancer, Irradiation, and Sunspots: The Solar Cycle Effect
Skin cancer is diagnosed in more than 2 million individuals annually in the United States. It is strongly associated with ultraviolet exposure, with melanoma risk doubling after five or more sunburns. Solar activity, characterized by features such as irradiance and sunspots, undergoes an 11-year solar cycle. This fingerprint frequency accounts for relatively small variation on Earth when compar...
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Aims. In this paper we investigate the dependence of umbral core brightness, as well as the mean umbral and penumbral brightness on the phase of the solar cycle and on the size of the sunspot. Methods. Albregtsen & Maltby (1978) reported an increase in umbral core brightness from the early to the late phase of solar cycle from the analysis of 13 sunspots which cover solar cycles 20 and 21. Here...
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ژورنال
عنوان ژورنال: Physics Today
سال: 2023
ISSN: ['0031-9228', '1945-0699']
DOI: https://doi.org/10.1063/pt.3.5183