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ACE/EPAM Beam-like electron events

ResourceID
spase://NASA/Catalog/ACE/Beam-like_electron_events

Description
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.

Metadata Rights
CC0-1.0: Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.

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Details

Version:2.7.1

Catalog

ResourceID
spase://NASA/Catalog/ACE/Beam-like_electron_events
NamingAuthority
NASA
ResourceType
Catalog
ResourceHeader
ResourceName
ACE/EPAM Beam-like electron events
ReleaseDate
2026-02-02 13:10:21Z
RevisionHistory
RevisionEvent
ReleaseDate
2025-06-18 17:56:14
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2026-02-02 13:10:21Z
Note
Added MetadataRightsList. Added ResourceType and NamingAuthority. Updated to 2.7.1. ZCB
Description
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.
Contacts
Role Person StartDate StopDate Note
1. GeneralContact spase://SMWG/Person/Robert.E.Gold
2. Author spase://SMWG/Person/Dennis.K.Haggerty
3. MetadataContact spase://SMWG/Person/Olga.Y.Uritskaya

AccessInformation
RepositoryID
spase://SMWG/Repository/ACE_SC
AccessURL
URL
https://izw1.caltech.edu/ACE/ASC/DATA/level3/epam/BeamElectronEvents.pdf
Format
PDF
ProviderName
ACE SCIENCE CENTER
InstrumentIDs
spase://SMWG/Instrument/ACE/EPAM
PhenomenonType
SolarWindExtreme
TimeSpan
StartDate
1997-09-20 03:48:00
StopDate
2007-01-13 15:18:00
Parameter #1
Name
#
Support
SupportQuantity
Housekeeping
Parameter #2
Name
year
Support
SupportQuantity
Temporal
Parameter #3
Name
Date
Support
SupportQuantity
Temporal
Parameter #4
Name
DOY
Description
Day of Year
Support
SupportQuantity
Other
Parameter #5
Name
hour
Support
SupportQuantity
Temporal
Parameter #6
Name
Min
Description
minutes
Support
SupportQuantity
Temporal
Parameter #7
Name
cnl
Description
channel within the EPAM data
Support
SupportQuantity
Other
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SPDF re3data ID
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Last Updated: 2026-02-02