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Estimating high-energy electron fluxes by intercalibrating Reimei optical and particle measurements using an ionospheric model

Estimating high-energy electron fluxes by intercalibrating Reimei optical and particle measurements using an ionospheric model
Estimating high-energy electron fluxes by intercalibrating Reimei optical and particle measurements using an ionospheric model
This paper describes a technique for intercalibrating particle and optical measurements from the Reimei microsatellite using an ionospheric model. Reimei has three auroral cameras (“MAC”), together with electron and ion energy spectrum analysers (“ESA/ISA”). The maximum electron energy measured is 12 keV, which means that during high-energy events, the particle data are often missing an important part of the energy flux. Although the total electron energy flux can be estimated from the optical measurements, the MAC data must be accurately calibrated, which is complicated by an unknown and variable background from sources such as the moon and snow reflection. Using unsaturated ESA measurements of the complete electron spectrum as input for an ionospheric model, the coincident camera observations can be calibrated, allowing estimates to be made of the total electron energy flux at other times during the same event, when the maximum energy is well above that measured by ESA
1364-6826
8-17
Whiter, D.K.
9a30d7b6-ea41-44fb-bd52-3ff1964eca5c
Lanchester, B.S.
e864533e-eea0-471f-a3f9-7c70c25be55b
Sakanoi, T.
44a03e54-756d-4c6a-a695-50083076fb7c
Asamura, K.
737920eb-36d1-49d2-98ad-a8eabe6121b1
Whiter, D.K.
9a30d7b6-ea41-44fb-bd52-3ff1964eca5c
Lanchester, B.S.
e864533e-eea0-471f-a3f9-7c70c25be55b
Sakanoi, T.
44a03e54-756d-4c6a-a695-50083076fb7c
Asamura, K.
737920eb-36d1-49d2-98ad-a8eabe6121b1

Whiter, D.K., Lanchester, B.S., Sakanoi, T. and Asamura, K. (2012) Estimating high-energy electron fluxes by intercalibrating Reimei optical and particle measurements using an ionospheric model. Journal of Atmospheric and Solar-Terrestrial Physics, 89, 8-17. (doi:10.1016/J.JASTP.2012.06.014).

Record type: Article

Abstract

This paper describes a technique for intercalibrating particle and optical measurements from the Reimei microsatellite using an ionospheric model. Reimei has three auroral cameras (“MAC”), together with electron and ion energy spectrum analysers (“ESA/ISA”). The maximum electron energy measured is 12 keV, which means that during high-energy events, the particle data are often missing an important part of the energy flux. Although the total electron energy flux can be estimated from the optical measurements, the MAC data must be accurately calibrated, which is complicated by an unknown and variable background from sources such as the moon and snow reflection. Using unsaturated ESA measurements of the complete electron spectrum as input for an ionospheric model, the coincident camera observations can be calibrated, allowing estimates to be made of the total electron energy flux at other times during the same event, when the maximum energy is well above that measured by ESA

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More information

Accepted/In Press date: 2 June 2012
Published date: 7 July 2012
Organisations: Astronomy Group

Identifiers

Local EPrints ID: 397227
URI: http://eprints.soton.ac.uk/id/eprint/397227
ISSN: 1364-6826
PURE UUID: c8f8caab-81d4-4443-8178-2a6cbf67e4ee
ORCID for D.K. Whiter: ORCID iD orcid.org/0000-0001-7130-232X

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Date deposited: 24 Jun 2016 10:39
Last modified: 07 Aug 2019 00:39

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