PWS (Plasma Wave Detector and Sounder) onboard the Akebono (EXOS-D) satellite has three sub-systems; i.e. i) a sub-system for natural plasma wave observations (NPW), ii) a sub-system for stimulated plasma wave experiments (SPW) and iii) the instrumentation for measurement of the number density of electron (NEI).

This dataset contains the electron number density data of 30 seconds time resolution derived from the resonance frequency of the upper hybrid resonance (UHR) waves found in the electric field intensity spectrum data.

Data format

The data files are provided in the text format.

Column 1: Modified Julian Date
Column 2: Date   
Column 3: UT     
Column 4: Height [km] 
Column 5: Geomagnetic latitude [degree]
Column 6: Geomagnetic local time [hour] 
Column 7: Dip-L value  
Column 8: Electron number density [/cc]

Data Analysis

Here, you can find a TDAS load procedure file for PWS electric field intensity spectrum data. PWS electric field intensity spectrum data analysis becomes available on TDAS with this load procedure. TDAS (THEMIS Data Analysis Software suite) has been developed by THEMIS project. See TDAS web page for details.

If you have any questions or request for the data, please contact DARTS.

Request for using this data

In any publications, the use of the Akebono data should be acknowledged, for example,

“Akebono/PWS data were provided through DARTS at the Institute of Space and Astronautical Science, JAXA in Japan.”