The First Fermi-LAT Solar Flare Catalog

Abstract

We present the first Fermi - Large Area Telescope (LAT) solar flare catalog covering the 24 th solar cycle. This catalog contains 45 Fermi -LAT solar flares (FLSFs) with emission in the gamma-ray energy band (30 MeV - 10 GeV) detected with a significance greater than 5 sigma over the years 2010-2018. A subsample containing 37 of these flares exhibit delayed emission beyond the prompt-impulsive hard X-ray phase with 21 flares showing delayed emission lasting more than two hours. No prompt-impulsive emission is detected in four of these flares. We also present in this catalog the observations of GeV emission from 3 flares originating from Active Regions located behind the limb (BTL) of the visible solar disk. We report the light curves, spectra, best proton index and localization (when possible) for all the FLSFs. The gamma-ray spectra is consistent with the decay of pions produced by >300 MeV protons. This work contains the largest sample of high-energy gamma-ray flares ever reported and provides the unique opportunity to perform population studies on the different phases of the flare and thus allowing to open a new window in solar physics.

Published in ApJS

References in corpus (8)

• Fermi-LAT Observations of Two Gamma-Ray Emission Components from the Quiescent Sun
• Gamma-ray emission from the solar halo and disk: a study with EGRET data
• GLE and Sub-GLE Redefinition in the Light of High-Altitude Polar Neutron Monitors
• Fermi-LAT Observations of High-energy Behind-the-limb Solar Flares
• First detection of >100 MeV gamma rays associated with a behind-the-limb solar flare
• Gamma-rays from halos around stars and the Sun
• Soft X-ray Fluxes of Major Flares Far Behind the Limb as Estimated Using STEREO EUV Images
• Comparing Long-Duration Gamma-Ray Flares and High-Energy Solar Energetic Particles

Cited by in corpus (4)

• KW-Sun: The Konus-Wind Solar Flare Database in Hard X-ray and Soft Gamma-ray Ranges
• Catalog of Long-Term Transient Sources in the First 10 Years of Fermi-LAT Data
• The coupling of an EUV coronal wave and ion acceleration in a Fermi-LAT behind-the-limb solar flare
• A study of super-luminous stars with the Fermi Large Area Telescope