Act seminar upload

1. Europa and its water plumes
Hans Huybrighs
hans.huybrighs@esa.int

2. NASA/JPL-Caltech/SSI/CICLOPS/Kevin M. Gill

3. NASA

4. NASA

7. 7
NASA

8. Why interesting?
[Background: NASA/ JUICE: airbus]

9. 9
Observations

12. 12
Magnetosphere
[Corey Cochrane]

13. John Spencer

14. Mia Stålnacke
Lorenz Roth

15. 15
[Roth et al., 2014]
Auroral emissions
200 km high, 1000 kg/s

16. 16[Sparks et al., 2016, 2017, 2019]
Jupiter transits

17. 17
[Sparks et al., 2019]
Two sofia flights
Recent SOFIA observations

18. 18
Renewed interest in Galileo
E12
[Bloecker et al., 2016]
[Jia et al., 2018]
[Arnold et al., 2019]

19. 19
Charged particles
[Corey Cochrane]

20. 20
Deflection of plasma
Photo-ionization
Electron impact
Atmosphere
Ionosphere

21. 21
Deflection of plasma (data)
Closest
approach
Photo-ionization
Electron impact
Atmosphere Ionosphere
[Huybrighs 2018]

22. 22
Coupled interaction plasma and
magnetic field
Plasma flow speed Magnetic field magnitude
[Schilling et al., 2008]
Corotating
plasma

23. [Huybrighs et al., 2020]
Now with plume

24. [Jia et al., 2018]

25. 25
Enceladus’ plumes & magnetic
fields
→ Dougherty et al., 2006

26. 26
Europa plume: falls back

27. 27
Status
Observations
• Aurora Hubble (1x)
• Limb darkening Hubble 5x
• Galileo magnetic field (2 flybys)

28. 28

29. 29
Magnetosphere
[Corey Cochrane]

30. Energetic proton

31. H+ depletions (220 to 550 keV)
Wake
Jupiter
Flow
Europa
Energetic proton depletions
[Huybrighs 2018]

32. 32
Losses of energetic protons
H+
H
Impact
Charge exchange
(ions)

33. Energeticion
Low energy neutral
Energetic
Neutral
Atom
Low energy ion
Charge exchange

34. 34
Losses of energetic particles
H+
H
Impact
Charge exchange
(ions)

35. Particle tracing

36. 36
Electromagnetic field

37. H+ depletions (220 to 550 keV)
Wake
Jupiter
Flow
Europa
Energetic proton depletions
[Huybrighs 2018]

38. Europa flyby E26: plume signature & charge exchange
EPD proton flux (TP1 115-244 keV)
With plume
[Huybrighs et al., 2020]

39. Europa flyby E26: plume signature & charge exchange
EPD proton flux (TP1 115-244 keV)
With plume
[Huybrighs et al., 2020]

40. Europa flyby E26: plume signature & charge exchange
EPD proton flux (TP1 115-244 keV)
With plume
[Huybrighs et al., 2020]

41. Europa flyby E26: plume signature & charge exchange
EPD proton flux (TP1 115-244 keV)
No plume
With plume
[Huybrighs et al., 2020]

42. H+ depletions (220 to 550 keV)
Wake
Jupiter
Flow
Europa
Energetic proton depletions
[Huybrighs 2018]

43. 43
Status
Observations
• Aurora Hubble (1x)
• Limb darkening Hubble 5x
• Galileo flybys 2x
• Magnetic field data & energetic protons

44. 44
The future

45. 45
JUICE
JUpiter ICy moon Eplorer (JUICE)

46. 46
JUICE flybys
[Huybrighs 2018]

47. 47
Particle Environment Package (PEP)
Detection of: ions, neutrals, electrons...

48. 48
[Huybrighs et al., 2017]

49. 49
JUICE has a
chance of detecting
the plumes!
hans.huybrighs@esa.int
@hans_huybrighs