Variation in sunspot properties between 1999 and 2014
R. RezaeiKiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, 79104 Freiburg, GermanyC. BeckNational Solar Observatory (NSO), 3010 Coronal Loop, Sunspot, NM 88349, USAA. LaggMax-Planck Institute for Solar System Research, 37077 Göttingen, GermanyJ. M. BorreroKiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, 79104 Freiburg, GermanyW. SchmidtKiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, 79104 Freiburg, GermanyM. ColladosDepartamento de Astrofísica, Universidad de La Laguna, 38205, La Laguna, Tenerife, Spain
2015en
ABI
Annotatsiya
Aims. We study the variation in the magnetic field strength, area, and continuum intensity of umbrae in solar cycles 23 and 24.
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