The creation of blue-shifted regions in an active region that lead to the onset of a radio nise storm.
Abstract
On 31st March 2019, a new simple bipolar active region emerged in the NE of the Sun. This region formed from a small bright point, and developed through expansion. For the first time, we observe the development and expansion of the loops with time, and with magnetic modelling see how the region at the edge of the active region form an increasing number of open magnetic field lines. We see the development of the region where blue-shifts form. These blue-shifted regions are always seen at the edges of active regions as observed by the Hinode EUV Imagining Spectrometer (EIS), and we discuss how they are formed. Alongside these observations, Parker Solar Probe observed a radio noise storm. We track how the blue-shifted and the radio data increase as the active region develops in its first few days of life. The blue-shifted regions on the active region seems to be the source of the radio noise storm, confirming their importance as a contributor to the solar wind.
- Publication:
-
43rd COSPAR Scientific Assembly. Held 28 January - 4 February
- Pub Date:
- January 2021
- Bibcode:
- 2021cosp...43E.958H