Prosiectau fesul blwyddyn
Crynodeb
Sunspots and their dynamics dominate the magnetic topology and evolution
of both the photosphere and the overlying coronal active regions. Thus a
comprehensive understanding of their behaviour is essential to
understanding the solar magnetic field. A new technique is presented for
applying multiple ellipse fits as a method for rotation tracking of
sunspot umbrae. The method is applied to a sunspot in NOAA active region
AR 12158 during an X-class flare event and the resulting rotation rate
correlates well with other measurements from literature. The method also
reveals an apparent difference in rotation rate between the edge and the
innermost region of the sunspot umbra of up to 2 degrees per hour. Such
differential rotation must lead to the large-scale twisting of sunspot
magnetic flux tubes with implications for models of coronal loops and
the build-up of instabilities that may lead to eruptions.
Iaith wreiddiol | Saesneg |
---|---|
Rhif yr erthygl | 87 |
Nifer y tudalennau | 8 |
Cyfnodolyn | Solar Physics |
Cyfrol | 295 |
Rhif cyhoeddi | 6 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 30 Meh 2020 |
Ôl bys
Gweld gwybodaeth am bynciau ymchwil 'Observation of Differential Rotation Within a Sunspot Umbra During an X-Class Flare'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.Proffiliau
Prosiectau
- 2 Wedi Gorffen
-
Solar System Physics at Aberystwyth University
Morgan, H. (Prif Ymchwilydd), Cook, T. (Cyd-ymchwilydd), Gorman, M. (Cyd-ymchwilydd), Li, X. (Cyd-ymchwilydd), Pinter, B. (Cyd-ymchwilydd) & Taroyan, Y. (Cyd-ymchwilydd)
Science & Technology Facilities Council
01 Ebr 2019 → 31 Rhag 2022
Prosiect: Ymchwil a ariannwyd yn allanol
-
STFC Aberystwyth 2015 DTP
Evans, A. (Prif Ymchwilydd)
Science & Technology Facilities Council
01 Hyd 2015 → 31 Maw 2021
Prosiect: Ymchwil a ariannwyd yn allanol