Astronomy Letters

, Volume 40, Issue 8, pp 510–518 | Cite as

Investigation of the evolution of coronal bright points and magnetic field topology

  • E. P. MinenkoEmail author
  • N. V. Karachik
  • I. Sattarov
  • A. A. Pevtsov


Our investigation has been carried using the instruments onboard the Solar Dynamics Observatory (SDO) providing a high resolution of images (AIA photographs and HMI magnetograms). We have investigated the structure and magnetic evolution of several coronal bright points and small scale N-S polarity magnetic fluxes closely associated with them. We also compare the evolution of the magnetic polarities of elementary isolated sources of positive and negative fluxes (magnetic bipoles) and coronal bright points. Tiny (“elementary”) coronal bright points have been detected. A standard coronal bright point is shown to be a group of “elementary” coronal bright points that flare up sequentially. Our investigation shows that a change in the magnetic fluxes of opposite polarities is observed before the flare of a coronal bright point. We show that not all cases of the formation of coronal bright points are described by the magnetic reconnection model. This result has not been considered previously and has not been pointed out by other authors.


Sun coronal bright points magnetic field 


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Copyright information

© Pleiades Publishing, Inc. 2014

Authors and Affiliations

  • E. P. Minenko
    • 1
    Email author
  • N. V. Karachik
    • 2
  • I. Sattarov
    • 2
  • A. A. Pevtsov
    • 3
  1. 1.Ulugh Beg Astronomical InstituteAcademy of Sciences of UzbekistanTashkentUzbekistan
  2. 2.Tashkent State Pedagogical UniversityTashkentUzbekistan
  3. 3.National Solar Observatory, Sacramento PeakSunspotUSA

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