Astronomy:ISIS (space probe instrument)

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IS☉IS hardware being prepared for its mission, EPI-Lo harware shown in 2017

Integrated Science Investigation of the Sun, stylized IS☉IS, is an instrument aboard the Parker Solar Probe, a space probe designed to study the Sun.[1] ISOIS is focused on measuring energetic particles from the Sun, including electrons, protons, and ions.[2] The parent spacecraft was launched in early August 2018, and with multiple flybys of Venus will study the heliosphere of the Sun from less that 4 million kilometers or less than 9 solar radii.[3][4]

There is two major detectors part of IS☉IS, EPI-Lo and EPI-Hi corresponding to detection of relatively lower and higher energy particles.[5] EPI-Lo is designed to detect from about 20 keV per nucleon up to 15 MeV total energy, and for electrons from about 25 keV up to 1000 keV.[6] The detector for higher energies, EPI-Hi is designed to measure charged particles from about 1– to 200 MeV per nucleon and electrons from about 0.5 to 6 MeV, according to a paper about the device.[7]

The shortname includes the a symbol of the Sun, a circle with a dot in it.[8]

EPI-HI includes:[9]

  • High Energy Telescope (1)
    • HET has 16 detectors stacked
  • Low Energy Telescopes (2)
    • LET1 is double ended with 9 stacked detectors
    • LET2 is single ended with 7 stacked detectors

The detectors are solid-state devices.[10]

EPI-Hi includes 8 wedge detectors, fed by 80 separate entrances.[11]

EPI-Lo can record differential energy spectra for:[12]

See also

References

  1. ↑ JHUAPL. "Parker Solar Probe Instruments: IS☉IS" (in en). Parker Solar Probe. http://parkersolarprobe.jhuapl.edu/News-Center/Show-Article.php?articleID=86. 
  2. ↑ [1]
  3. ↑ "NASA Solar Probe Flies By Venus on Its Way to 'Touch' the Sun". Space.com. https://www.space.com/42015-nasa-parker-solar-probe-first-venus-flyby.html. 
  4. ↑ JHUAPL. "After Near-Perfect Trajectory Maneuver, Parker Solar Probe On Course To Touch The Sun" (in en). Parker Solar Probe. http://parkersolarprobe.jhuapl.edu/News-Center/Show-Article.php?articleID=96. 
  5. ↑ McComas, D. J.; Alexander, N.; Angold, N.; Bale, S.; Beebe, C.; Birdwell, B.; Boyle, M.; Burgum, J. M. et al. (2014-07-05). "Integrated Science Investigation of the Sun (ISIS): Design of the Energetic Particle Investigation" (in en). Space Science Reviews 204 (1-4): 187–256. doi:10.1007/s11214-014-0059-1. ISSN 0038-6308. https://link.springer.com/article/10.1007/s11214-014-0059-1. 
  6. ↑ McComas, D. J.; Alexander, N.; Angold, N.; Bale, S.; Beebe, C.; Birdwell, B.; Boyle, M.; Burgum, J. M. et al. (2014-07-05). "Integrated Science Investigation of the Sun (ISIS): Design of the Energetic Particle Investigation" (in en). Space Science Reviews 204 (1-4): 187–256. doi:10.1007/s11214-014-0059-1. ISSN 0038-6308. https://link.springer.com/article/10.1007/s11214-014-0059-1. 
  7. ↑ McComas, D. J.; Alexander, N.; Angold, N.; Bale, S.; Beebe, C.; Birdwell, B.; Boyle, M.; Burgum, J. M. et al. (2014-07-05). "Integrated Science Investigation of the Sun (ISIS): Design of the Energetic Particle Investigation" (in en). Space Science Reviews 204 (1-4): 187–256. doi:10.1007/s11214-014-0059-1. ISSN 0038-6308. https://link.springer.com/article/10.1007/s11214-014-0059-1. 
  8. ↑ JHUAPL. "Parker Solar Probe Instruments: IS☉IS" (in en). Parker Solar Probe. http://parkersolarprobe.jhuapl.edu/News-Center/Show-Article.php?articleID=86. 
  9. ↑ [2]
  10. ↑ [3]
  11. ↑ https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110013395.pdf]
  12. ↑ [4]




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