LINDA captures Auroral oval during a Day/Night crossing!
This data set, showing plasma density, was captured during Orbit 97 on 17 december 1998 starting at about 15:29:00 UT. The measurement was done in real time as the Astrid-2 passed from dayside to nightside and then into the auroral oval. The plot clearly shows how the plasma density drops as the satellite passes from dayside to nightside. When Astrid-2 moves into the auroral oval the density fluctuations increases most significantly.
 

Figure 1: Density (tm-units) vs. time (s).

 
S/C name  ASTRID2
Orbit  97
Groundstation  Solna satellite station
Elset epoch 1998-12-14 04:56:34 (348.2059549)
EAOS 1998-12-17 15:29:50 (17882.645726)
CLO 1998-12-17 15:34:00 (17882.648611)
CLC 1998-12-17 15:40:00 (17882.652778)
ELOS 1998-12-17 15:43:56 (17882.655517)
Antenna switch 1998-12-17 15:36:56 (17882.650656)
Antenna order 1/2
Duration  000:00:14:06
Peak elevation 15.0 degrees
Rise time Azim 269.06
Set time Azim 19.20
Ground track North crossing g/s longitude
Attitude used 0.30671363,-0.94396749,-0.12186934)
AOS  1998-12-17 15:29:52
LOS  1998-12-17 15:36:55
Data filename 25430929.SSS
Available FTP YES
Formats saved 53812