| Name: kiran kumar Kalisetti |
| Affiliation: U R Rao Satellite Centre |
| Conference ID: ASI2026_670 |
| Title: A Multi-Instrument Study of Energy Flow in Two Successive M-Class Solar Flares using HEL1OS/Adithya-L1, XRS/GOES, AIA&HMI/SDO |
| Abstract Type: Poster |
| Abstract Category: Sun, Solar System, Exoplanets, and Astrobiology |
| Author(s) and Co-Author(s) with Affiliation: Kiran Kumar Kalisetti(U R Rao Satellite Centre, Bangalore -560037, india), Manju Sudhakar(U R Rao Satellite Center, Bangalore - 560037, india) |
| Abstract: On Dec 15, 2023, two successive GOES M-class flares (M-6.7 & M-6.97) were observed from the
same active region (AR-13514) located at N05W64, occurring in immediate succession. Despite
originating from the same active region and belonging to the same class, both flares exhibit different
behaviors. We observed that the first flare follows the Neupert effect, while the second flare does not.
The free magnetic energy density in the flaring region decreases during the first flare, which is
expected. However, during the second flare, it increases. In addition, flare ribbon motion is more
prominent during the first flare compared to the second flare.
In this study, we investigate energy flow in the solar atmosphere during these two successive solar
flares. HEL1OS (High Energy L1 Orbiting X-Ray Spectrometer) spectral and timing data along with
GOES X-ray Sensors timing data are used to verify the Neupert effect and diagnose the evolution of
thermal and non-thermal plasma. AIA (Atmospheric Imaging Assembly) multi-wavelength data are
used to trace spatial and temporal evolution of flare emission across the chromosphere and corona. In
addition, HMI (Heliosesimic and Magnetic Imager) photosphere magnetic field data are used to
estimate free magnetic energy and reconnection rates from flare ribbons brightening. These
observations suggest that the first flare may have influenced the evolution of the second flare. |
