Average motion of emerging solar active region polarities
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DOI: 10.1051/0004-6361/201937322
Abstract: Context. The tilt of solar active regions described by Joy’s law is essential for converting a toroidal field to a poloidal field in Babcock-Leighton dynamo models. In thin flux tube models the Coriolis force causes… read more here.
Keywords: angle; flux; tilt angle; joy law ... See more keywords
Spectral signature of solar active region in millimetre and submillimetre wavelengths
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DOI: 10.1093/mnras/staa3354
Abstract: Active regions were observed with different instruments covering the spectral band from 17 to 405 GHz. The observations were made with the Nobeyama Radioheliograph (17 GHz), the Atacama Large Millimetre Array (107 and 238 GHz), and the Solar… read more here.
Keywords: spectral signature; 405 ghz; active region; submillimeter ... See more keywords
Estimates of Current Helicity and Tilt of Solar Active Regions and Joy’s Law
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DOI: 10.1134/s0016793220080149
Abstract: The tilt angle, current helicity and twist of solar magnetic fields can be observed in solar active regions. We carried out estimates of these parameters by two ways. Firstly, we consider the model of turbulent… read more here.
Keywords: estimates current; solar active; current helicity; active regions ... See more keywords