| Name: | B.S. Bharath Saiguhan |
| Affiliation: | Physical Research Laboratory |
| Conference ID : | ASI2024_371 |
| Title : | Solar Flare Statistics with Chandrayaan-2 XSM |
| Authors : | B.S. Bharath Saiguhan1, N.P.S. Mithun1, Santosh Vadawale1, C.S. Vaishnava1, Aveek Sarkar1 |
| Authors Affiliation: | 1 Physical Research Laboratory, Ahmedabad, Gujarat, India |
| Mode of Presentation: | Oral |
| Abstract Category : | Sun, Solar System, Exoplanets, and Astrobiology |
| Abstract : | The Solar X-ray Monitor (XSM) instrument on-board Chandrayaan-2 has been observing the Sun-as-a-Star since 2019, providing soft X-ray spectral measurements every second with an energy resolution of >180 eV (at 5.9 keV). XSM has seen sub-A class to X-class solar flares, and data from XSM provides a great opportunity for the statistical analysis of solar flare parameters. Of particular interest is the occurrence frequency distribution of solar flares, which stems from the understanding that the power law tail of this distribution dictates the degree to which ‘nanoflares’ contribute toward the heating of the Solar Corona (Parker, 1988; Hudson, 1991).
Using a semi-automated algorithm, solar flares were detected in the 1–15 keV XSM light curves, and their parameters computed. The distributions of flare parameters (such as flare duration, asymmetry etc.) over a wide range of flare intensities have been probed. We present the results of the statistical studies undertaken and discuss the implications derived regarding the Solar coronal heating problem. We also describe further studies that could be carried out with the help of the Flare Parameter Database constructed as a product of this work. This data product is planned to be made available on the XSM website and regularly updated along with additional flare metadata from other sources. |
