| Name: Malay Shukla |
| Affiliation: Indian Institute of Technology, Delhi |
| Conference ID: ASI2026_562 |
| Title: A comparison of G-band brightness as a proxy-magnetometer in various magnetic configurations |
| Abstract Type: Poster |
| Abstract Category: Sun, Solar System, Exoplanets, and Astrobiology |
| Author(s) and Co-Author(s) with Affiliation: Malay Shukla(Indian Institute of Technology, Delhi), Sneha Pandit(IUCAA, Pune), Nitin Yadav(Indian Institute of Technology, Delhi) |
| Abstract: We investigate the diagnostic potential of the G-band intensity at 430.4 nm for probing small-scale magnetic fields in the solar photosphere. Combining three-dimensional MHD simulations from the MURaM code and spectral synthesis via the RH 1.5D code, we evaluate the intensity contrast in the G-band filtergrams by comparing the filter centered at 430.4 nm in comparison to the conventional 430.5 nm. Our results show that filtergrams centered at 430.4 nm provide higher contrast across varying magnetic environments, particularly at narrow filter widths. This enhancement arises from its slightly higher formation height and greater sensitivity to temperature variations in magnetized regions. These findings indicate that G-band filtergrams centered at 430.4 nm could improve the visibility of magnetic bright points and may serve as a better alternative for narrowband imaging in the photosphere, offering improved effectiveness for magnetic field diagnostics. The obtained results are also relevant and suggest potential applications in stellar contexts, where molecular bands are often used as proxies for magnetic activity. |
