2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/Catalog/ACE/Beam-like_electron_events NASA Catalog ACE/EPAM Beam-like electron events 2026-02-02T13:10:21Z 2025-06-18T17:56:14 Only known prior ReleaseDate of the metadata 2026-02-02T13:10:21Z Added MetadataRightsList. Added ResourceType and NamingAuthority. Updated to 2.7.1. ZCB ACE/EPAM "beam-like" electron events refer to a specific type of solar energetic electron event observed by the Electron, Proton, and Alpha Monitor (EPAM) instrument on the Advanced Composition Explorer (ACE) spacecraft. These events are characterized by a strong anisotropy in the electron pitch-angle distribution, meaning the electrons are traveling predominantly in one direction, resembling a beam. These field-aligned electron beams all have velocity-dispersed onsets, indicating that the solar injection of electrons began simultaneously. spase://SMWG/Person/Robert.E.Gold GeneralContact spase://SMWG/Person/Dennis.K.Haggerty Author spase://SMWG/Person/Olga.Y.Uritskaya MetadataContact spase://SMWG/Repository/ACE_SC https://izw1.caltech.edu/ACE/ASC/DATA/level3/epam/BeamElectronEvents.pdf PDF ACE SCIENCE CENTER spase://SMWG/Instrument/ACE/EPAM SolarWindExtreme 1997-09-20T03:48:00 2007-01-13T15:18:00 # Housekeeping year Temporal Date Temporal DOY Day of Year Other hour Temporal Min minutes Temporal cnl channel within the EPAM data Other