Long-lived hot coronal structures observed with CORONAS-F/SPIRIT in the Mg XII line

  title={Long-lived hot coronal structures observed with CORONAS-F/SPIRIT in the Mg XII line},
  author={V. V. Grechnev and Sergey V. Kuzin and A. M. Urnov and Igor A. Zhitnik and Arkadiy M. Uralov and S. A. Bogachev and Moissei Livshits and O. I. Bugaenko and Vasiliy G. Zandanov and A. P. Ignat’ev and Viktor V. Krutov and S. N. Oparin and Andrei A. Pertsov and Vladimir Slemzin and I. M. Chertok and Alexandr I. Stepanov},
  journal={Solar System Research},
Large-scale hot features were detected and observed several times high in the solar corona in the high-temperature Mg XII line (T = 5–20 MK, Tmax = 10 MK) with the soft X-ray telescope of the SPIRIT instrumentation complex onboard the CORONAS-F spacecraft. These features look like a spider up to 300000 km in size and live up to a few days. Their bright cores observed at heights were from 0.1 to 0.3 solar radii are connected with active regions by darker legs, giant loops. These features are… 
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