Dynamcis and magnetic properties in coronal holes using high-resolution multi-instrument solar observations
Abstract
Using high-resolution solar observations from the Hinode Instruments SOT/SP, EIS and XRT as well as IRIS from a coronal hole on the 26th of September 2017, we are investigating the dynamics within the coronal hole visible on the specified date. Further satellite data support is given by full disc images from SDO with the AIA and HMI instruments. EIS and IRIS data provide us with crucial information about the plasma and energy flow from the Sun's chromosphere into the corona using the EUV and UV spectra and images. Investigating the magnetic configuration as well as the dynamics and changes within the coronal hole by using the SOT/SP data will give us additional crucial insights about the physical processes leading to the corresponding changes in the higher atmosphere. We compare the Hinode data with AIA and HMI data to get a firm comprehensive picture about the connection from high resolved photospheric fields and its dynamics within the higher layer. Within the timeframe of the analysed EIS dataset two microflare events associated with a solar jet were captured, originating inside the coronal hole under investigation. We believe that it is totally worthwhile to study these features in full detail as not so much attention was paid to high energy processes within coronal holes and their basic relationship to the harboring coronal hole and they show surprisingly high downflows in the Fe XII iron line (up to 140 km/s). In the current proceeding we will outline the state of the art of this investigation and give an overview of the further steps necessary. The mentioned data were obtained during a recent GREGOR campaign with the joint support of IRIS and Hinode (HOP 338).
- Publication:
-
Tenth Workshop on Solar Influences on the Magnetosphere, Ionosphere and Atmosphere
- Pub Date:
- August 2018
- DOI:
- 10.31401/WS.2018.proc
- Bibcode:
- 2018simi.conf...31K