Analysis of the Impulsive Phase of Solar Flares with Pass 8 LAT data

TL;DR

This paper analyzes high-energy gamma-ray emissions during the impulsive phase of solar flares using Pass 8 LAT data, demonstrating improved analysis capabilities over Pass 7 due to better event selection and pile-up mitigation.

Contribution

It introduces a new Pass 8 data analysis method that enhances the study of solar flare gamma-ray emissions during the impulsive phase.

Findings

Pass 8 data enables standard analysis during impulsive phase

Pass 8 reduces pile-up effects compared to Pass 7

Improved gamma-ray emission characterization during solar flares

Abstract

We show the results of analyses performed on high-energy gamma-ray emission during the impulsive phase of solar flares detected by the LAT using Pass 8 data. We compare results obtained with Pass 7 and Pass 8 data sets, using both LAT Low Energy and standard data classes. With a dedicated event selection, Pass 8 allows standard analysis during the impulsive phase: it has been designed to be less susceptible to pile-up in the LAT Anti-Coincidence Detector caused by the intense hard X-ray emission at early times.