We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Anomalous polarization features of the cyclotron radiation source in the NOAA 7123 active region: The structure, dynamics, and reasons of occurrence.
- Authors
Peterova, N. G.; Topchilo, N. A.; Opeikina, L. V.; Agalakov, B. V.; Borisevich, T. P.; Lubyshev, B. I.
- Abstract
The research results of the unique NOAA 7123 active region (April 1992) are presented; its anomalous polarization features (long-term predominance of O-mode radiation above the central part of the main sunspot) were previously revealed by VLA observations with a resolution of (2–4)” at wavelengths of 3.6 and 6.4 cm (Vourlidas et al., 1997). Additional observations in a wider band of electromagnetic radiation, including, in particular, spectrum-polarization observations performed with the RATAN-600 and SSRT radio telescopes, are considered. The analysis of these data allowed for the conclusion that the anomaly was caused by the presence of a cold substance in the upper coronal layers, starting from the height where (6–7) cm radiation was generated. A possible transportation agent of this substance—Hα filament—one of the bases of which fell on the sunspot’s umbra-penumbra boundary, was found.
- Subjects
SUNSPOTS; SOLAR magnetic fields; SOLAR active regions; SOLAR wind; CYCLOTRONS
- Publication
Geomagnetism & Aeronomy, 2013, Vol 53, Issue 7, p1000
- ISSN
0016-7932
- Publication type
Article
- DOI
10.1134/S0016793213080185