Enceladus Jet Sources |
Enceladus Jet Sources |
Oct 10 2007, 05:20 PM
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#1
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
New press release by the imaging team:
Cassini Pinpoints Hot Sources of Jets on Enceladus October 10, 2007 (Source: Space Science Institute) CICLOPS link to the release here. One thing I was curious about tiger stripe naming - why didn't they switch "Baghdad" and "Cairo" so we have a nice A,B,C,D progression? I can only imagine it was done on purpose, but why? -------------------- |
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Oct 11 2010, 12:51 PM
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#2
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Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
So, it does seem to be something physical, not optical. From a gut feeling sort of thing, I would expect stuff that would hang around Enceladus to be more dense near the moon itself and not be so neatly uniformly distributed with such a sharp edge. Some (dynamical) simulations people have done for Enceladus (for those with access :S ) seem to show something similar :
http://www.scienceonline.org/cgi/reprint/311/5766/1416.pdf http://www.sciencedirect.com/science?_ob=A...mp;searchtype=a http://www.lpi.usra.edu/meetings/lpsc2010/pdf/2635.pdf (free) So, something else might be going on as well? weirdness stays |
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Oct 11 2010, 01:27 PM
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#3
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
So, it does seem to be something physical, not optical. On the other hand, there's a problem with this conclusion. I would expect Cassini's sensitive fields and particles instruments to pick up this change in perceived optical density as well if it was an actual density gradient. Also, wouldn't UVIS occultations pick up this enrichment in material - although it's possible measurements typically started closer in than about 2 Enceladus radii? -------------------- |
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