About the Project

This package provides the necessary querying, analysis, and calculation methods to independently derive 'sun-as-a-star' RV variations using SDO/HMI data for any time span since SDO has begun observing.

Scaling factors are provided in order to calculate RVs comparable to magnitudes measured by ground-based spectrographs (HARPS-N and NEID). In addition, there are routines to calculate magnetic observables to compare with RV variations and determine what is driving Solar activity.

A huge thank you to Raphaëlle Haywood for her guidance and support on this project and for her papers that outlined the methodology of calculation.

References

• Ervin et al. (2021) - Accepted
• Milbourne et al. (2019)
• Haywood et al. (2016)
• Based on a technique developed by Meunier, Lagrange & Desort (2010) for SoHO/MDI images.

Want to contribute?

• for any issues or bug fixes, please fill out an issue report on the GitHub page

Contact

Tamar Ervin: tamarervin@gmail.com

Sam Halverson: samuel.halverson@jpl.nasa.gov