Soft X-ray irradiance study
using Hinode/XRT synoptic composite images

Aki Takeda at HJC on 20 October, 2021

   Sample pages from the XRT Synoptic Composite Image Archive (SCIA)
  (http://solar.physics.montana.edu/HINODE/XRT/SCIA/)


Hinode 14 / IRIS 11 Joint Science Meeting 2021

1. Introduction




2. Method of Analysis



3. Calibration challenges and difficulties

Irradiance study assumes uniform quality of data throughout the mission, but the instruments are aging:

4. Results

4.1 Mission-long XRT irradiance (5-60A), filter-ratio Te and EM

4.2 Comparison with GOES/XRS


4.3 Comparison with Yohkoh/SXT


4.4 Use of spatial information



5. Summary