SOLER Open-Source Python Tools for the Analysis of Energetic Solar Eruptions

The Energetic Solar Eruptions: Data and Analysis Tools (SOLER) project presents a wide array of software tools to help in the analysis of solar energetic particle (SEP) events. The current heliospheric fleet of spacecraft, which has expanded significantly in recent years, offers an unprecedented number of simultaneous vantage points and, as such, uniquely extensive data on solar eruptions and their effects throughout the heliosphere. In an effort to utilize this data to its full potential, SOLER provides software tools in the form of easy-to-use open-source Python Jupyter Notebooks. The tools are designed such that even users with limited programming experience can get the most out of them, allowing one to focus on what matters most: the science. They are available online and require no installation by the user.

The tools cover a wide range of functionalities. They include automatized data loaders that handle downloading from the web and enable visualization of SEP intensity-time profiles and other in-situ measurements made by various instruments aboard the heliospheric fleet. Additional tools assist in determining the Pitch-Angle Distributions (PAD) and capabilities for background-subtraction of SEPs and first-order anisotropies, their energy spectra, including the ability to fit the spectra using a variety of mathematical models. The final set of tools is dedicated to the determination of SEP event onset times and related analysis. These tools offer a linear regression method designed to identify the times at which SEP intensities change rapidly as well as a novel combination of a modified Poisson-CUSUM scheme, statistical bootstrapping, and methodological time-averaging to estimate the most probable onset time along with the associated confidence intervals.

This project has received funding from the European Union's Horizon Europe research and innovation programme under grant agreement No 101134999 (SOLER). Views and opinions expressed are those of the authors only and do not necessarily reflect those of the European Union or HaDEA. Neither the European Union nor the granting authority can be held responsible for them.