Thermal and Compositional Diagnostics of Solar Flares Using Aditya-L1/SoLEXS: A Comparative Study of X1.3 and X7.1 Events

🧪 Objectives of the Project

1. Select two well-documented flare events :
   • One associated with a CME .
   • One that is confined (no CME).
2. Use SoLEXS soft X-ray spectral data to derive:
   • Plasma temperature (T) ,
   • Emission measure (EM) ,
   • Possibly, elemental abundance ratios (if resolution allows).
3. Analyze and compare the temporal evolution of these parameters during both events.
4. Draw conclusions about how the presence or absence of a CME affects the thermal behavior of flares.

📚 Step-by-Step Workflow

1. Event Selection

• Use HEK (Heliophysics Event Knowledgebase) or NOAA SWPC reports to identify flare events.
• Confirm CME association via SOHO/LASCO , STEREO/COR , or SolarMonitor .
• Choose events observed by Aditya-L1 SoLEXS .

2. Data Retrieval

• Download SoLEXS Level 1 spectral data from the official repository.
• Use Fitsviewer or Python scripts to read FITS files.

3. Light Curve & Spectral Analysis

• Extract time-resolved light curves from different energy bands.
• Perform spectral fitting (e.g., using XSPEX or Sherpa) to get T and EM at multiple time steps.

4. Thermal Parameter Extraction

• Derive temperature (MK) and emission measure (cm⁻³) over time.