| Name: | Adithya HN |
| Affiliation: | Manipal Centre for Natural Sciences, Manipal Academy for Higher Education, Manipal |
| Conference ID : | ASI2024_317 |
| Title : | Long-term comparison study of Coronal temperature maps derived using XRT and AIA |
| Authors : | H. N. Adithya 1, P. Sreejith 1
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| Authors Affiliation: | 1. Manipal Centre for Natural Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India |
| Mode of Presentation: | Poster |
| Abstract Category : | Sun, Solar System, Exoplanets, and Astrobiology |
| Abstract : | Corona is the outermost and the hottest layer of the Solar atmosphere. Coronal features do not show a uniform temperature; rather, each feature and activity has different temperatures ranging from 1 to 10 MK. Temperature measurement of all the coronal features such as Active Region (AR), X-ray Bright Points(XBPs), Coronal Hole(CH), and Background(BG) and their time evolution is useful to understand the multi-temperatures behaviour of the corona.
In this study, we used SDO/AIA full disk images to derive a temperature map from May 2010 to the date ( 13 years). The temperature maps are generated using the filter ratio method. This method is good for quickly estimating coronal temperature maps for a long time period instead of time-consuming forward modelling methods. Though AIA data is available with a high cadence, we
have used only one or two per day to generate a temperature map of coronal features. We compare the two near-simultaneous temperature maps from AIA and XRT, using the existing XRT catalogue.. AIA has limitations at higher temperatures and XRT has limitations on the full disk cadence. In this study, we also study the correlation of the Coronal temperature of different features with the corresponding magnetic field complexity in the photosphere. We used HMI/SDO to study the magnetic field complexity corresponding to each bright feature seen in the corona. |
