Probing the Sun's Near Surface Shear Layer using HMI Spherical Harmonic Coefficients

Autor:	Tripathy, Sushanta C., Jain, Kiran, Kholikov, Shukurijon, Komm, Rudolf
Rok vydání:	2023
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	We have measured zonal and meridional components of subsurface flows up to a depth of 30 Mm below the solar surface by applying the technique of ring diagram on Dopplergrams which are constructed from the spherical harmonic (SH) coefficients. The SH coefficients are obtained from the Helioseismic and Magnetic Imager (HMI) full-disk Dopplergrams. We find a good agreement and some differences between the flows obtained in this study with those from the traditional methods using direct Dopplergrams. Comment: 6 pages and 4 figures; Proceedings of the IAU Symposium 365 - Dynamics of Solar and Stellar Convection Zones and Atmospheres, 2023 August 21-25, Yerevan, Armenia
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2312.11699 Zobrazit plný text záznamu View this record from Arxiv