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Instrument details
Acronym
ESA
Full name
Electrostatic Analyzer
Purpose
To measure thermal electrons and ions to identify and track high-speed flows through the magnetotail and identify pressure pulse
Short description
Measures the number of electrons and ions with a specified energy from a certain direction at a given time (the particle distribution function) over the energy range 0.003-30 keV (electrons) and 0.003-30 keV/n (ions with Z from 1 to 8)
Background
Part of a package of instruments to study the Magnetosphere
Scanning Technique
5 satellites moving to different positions into the Magnetosphere for 3-D field reconstruction
Resolution
N/A
Coverage / Cycle
Full magnetospheric volume
Mass
3 kg
Power
1.7 W
Data Rate
Providing Agency
NASA
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
2007-05-15 to ≥2022
Last update:
2021-12-16
Detailed characteristics
Satellites this instrument is flying on
Note: a red tag indicates satellites no longer operational, a
green tag indicates operational satellites, a blue tag indicates
future satellites
Instrument classification
Solar and space environment monitors Energetic particle spectrometer
WIGOS Subcomponents
Subcomponent 2 Electron sensor [cross magnetosphere] Proton sensor [cross magnetosphere] Alpha-particle sensor [cross magnetosphere] Heavy ion sensor [cross magnetosphere] Subcomponent 3 Heavy ions mass spectrometer [from LEO and HEO]
Mission objectives
Primary mission objectives Alpha particles differential directional flux Electron differential directional flux Heavy ion flux energy and mass spectrum Proton differential directional flux Show all Show fewer
Tentative Evaluation of Measurements
The following list indicates which measurements can typically be
retrieved from this category of instrument. To see a full Gap Analysis by Variable,
click on the respective variable.
Note: table can be sorted by clicking on the column headers
Instrument: ESA