Double Star Spectrograms (for HIA team)

Energy-time ion spectrograms from the HIA experiment onboard the Double Star TC-1 spacecraft:

Spectrogram units are in corrected-for-detection-efficiency counts per sec. (c/s). Density plot units are in ions/cm³. Velocity plot units are in km/s.

Each plot contains (from top to bottom):

• HIA mode (in black) and MCP High Voltage (in magenta).
• HIA spectrograms (4) for data from the "high G" (high-sensitivity) side: ions arriving in the 90° x 180° sector with a field-of-view pointing in the sun, dusk, tail, and dawn direction respectively.
• Omnidirectional HIA spectrogram for data from the "high G" (high-sensitivity) side.
• Ion velocity measured by HIA (GSE system).
• Ion density measured by HIA.
• Spacecraft coordinates (GSE system) and geocentric distance, in RE.

For caveats about the HIA data, cf. the Data Caveats page.

These plots are not for publication, and the users should contact the PI.

Science plots
Housekeeping plots