And 1-day summaries for greater detail:
Spectrum Analyzer Mode:
Wideband Mode: (This is mostly irrelevant since little or no wideband data will be obtained in the Magnetospheric Survey--only occasional fill data)
Spectrum Analyzer Mode:
Wideband Mode: (This is mostly irrelevant since little or no wideband data will be obtained in the Survey--only occasional fill data and data which is automatically recorded with remote sensing recorded observations)
The rationale for this observation is to explore the region of broadband electrostatic noise (BEN) in the middle magnetosphere at the edges of the plasma sheet as identified by Barbosa et al. [JGR, 86, 8357, 1981]. Barbosa et al. used the presence of BEN to argue that these field lines were the location of field-aligned beams and currents, indicative of acceleration processes, and were likely connected to the the high-latitude aurora. Recently, Connerney et al. [Science, 262, 1035, 1993] lent credence to this view by showing that most of the H3+ auroral emission is on field lines which thread the magnetosphere well beyond the orbit of Io, and perhaps on the "last closed field line", not inconsistent with the edge of the plasma sheet ~20 Rj. Therefore, we use the geometry of the Barbosa et al. observations to target a ~40 minute observation in this region. Perhaps Earth-based observations can be coordinated with this, hence, both dayside and nightside as well as north and south traversals of the Barbosa et al. region have been selected as possible intervals. Record LPW for ~40 minutes beginning at about 0703 on day 310 at a distance of ~ 19 Rj. Here is an illustration of the TAR geometry.
Spectrum Analyzer Mode:
Wideband Mode:
Playback Strategy:
Return LPW (Golay) wideband data at rate of 4:1 by returning every 4th waveform snapshot.
Record LPW for ~45 minutes beginning at about 13:10 on Nov. 4, day 309. Here is the associated geometry for the wake passage.
Spectrum Analyzer Mode:
Wideband Mode:
Playback Strategy:
Return LPW (Golay) wideband data at a rate of 2:1 by sending back every other waveform snapshot for ~20 minutes centered on closest approach and at a rate of 4:1 for the outer portions of the interval. Because of reduced downlink capabilities, it is anticipated that all wideband data for this observation will be returned at 4:1 compression.
