Speaker
Description
First Name: Jesper
Last Name: Schou
Affiliation: MPS
All Authors: Jesper Schou
Abstract: Helioseismology suffers from a number of difficult to understand effects. Among these are the so-called surface term and center-to-limb variations of travel times, both likely caused by the interaction of the waves with the near surface convection. With the ability to observe the same location on the Sun from two vantage points and the high spatial resolution of SO/PHI HRT it is now possibly to observe some of these interaction more directly, as done by Schou+ (2023) and Schou (2024). Unfortunately the datasets used in those studies were limited and the calibration not yet complete, limiting the results that could be obtained. Here I will revisit these issues using more and better calibrated SO/PHI data.