Rosetta scientific results |
Rosetta scientific results |
Sep 11 2015, 09:48 AM
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#61
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Junior Member Group: Members Posts: 27 Joined: 2-December 14 Member No.: 7359 |
Three papers on arXiv :
Gravitational slopes, geomorphology, and material strengths of the nucleus of comet 67P/Churyumov-Gerasimenko from OSIRIS observations http://arxiv.org/abs/1509.02707 Temporal morphological changes in the Imhotep region of comet 67P/Churyumov-Gerasimenko http://arxiv.org/abs/1509.02794 (nice OSIRIS pictures) http://arxiv.org/abs/1509.03179 Rapid temperature changes and the early activity on comet 67P/Churyumov-Gerasimenko |
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Sep 12 2015, 03:21 PM
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#62
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
QUOTE (nice OSIRIS pictures) Has any of the OSIRIS made it to a public archive yet? QUOTE Rapid temperature changes and the early activity... Interesting idea, but I was reflecting the other day how the near- and post-perihelion activity has shifted from the neck region to the plains on the two lobes. --Bill EDIT And a new paper out on “Temporal morphological changes in the Imhotep region of comet 67P/Churyumov-Gerasimenko” to be published in Astronomy & Astrophysics: http://dx.doi.org/10.1051/0004-6361/201527020 authored by Olivier Groussin, et al. http://blogs.esa.int/rosetta/2015/09/18/co...-rosettas-eyes/ And an announcement that Rosetta is to be taking station at 1500Km from the nucleus in late September http://blogs.esa.int/rosetta/2015/09/18/ro...-coma-at-large/ . Mebbe they are expecting a big Kerblooie? Or just simply want the opportunity to get a series of wide coma images? -b -------------------- |
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Sep 19 2015, 07:27 AM
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#63
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
new blog post and OSIRIS images: Comet surface changes before Rosetta's eyes
be sure to check also the free access A&A paper it refers to: Temporal morphological changes in the Imhotep region of comet 67P/Churyumov-Gerasimenko |
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Sep 20 2015, 04:13 PM
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#64
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Junior Member Group: Members Posts: 93 Joined: 21-January 13 Member No.: 6845 |
After hearing two good talks about the Rosina Zoo of organic molecule at the Rosetta Science Meeting I wait for the publication of the newly found molecules. Nice compounds which will create a lot of dicussions on how they are formed and how they can survive on a comet.
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Sep 20 2015, 05:44 PM
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#65
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
QUOTE Organic molecules on comets: Philae's first results from Churi prove surprising Date: July 30, 2015 Source: CNRS Summary: Organic molecules never previously observed in comets, a relatively varied structure on the surface but a fairly homogeneous interior, organic compounds forming agglomerates rather than being dispersed in the ice: these are just some of first results provided by Philae on the surface of comet Churi. These in situ findings, which contain a wealth of completely new information, reveal several differences in comparison with previous observations of comets and current models... http://www.sciencedaily.com/releases/2015/...50730172518.htm Is it from this work or from later data? There will no doubt be fascinating geochemistry based on temperatures and pressures _over the time period involved_ that would be impossible to duplicate in the lab. --Bill -------------------- |
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Sep 20 2015, 06:48 PM
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#66
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Junior Member Group: Members Posts: 93 Joined: 21-January 13 Member No.: 6845 |
http://www.sciencedaily.com/releases/2015/...50730172518.htm Is it from this work or from later data? There will no doubt be fascinating geochemistry based on temperatures and pressures _over the time period involved_ that would be impossible to duplicate in the lab. --Bill Sorry, but on this paper I am one of the coauthors, so this is not "new" for me. But the Rosina material is another teams data and so I have to wait for the meetings to get an update. The Zoo is large and the amount of compounds which can be still in the data and not yet identified might be large. I liked the groups made up by Kathrin Altwegg. The large ones and the small and flying ones an so on. I hope for a nice paper from ROSINA soon. |
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Sep 20 2015, 10:42 PM
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#67
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
I'll (we'll) be looking forward to the new paper then. There is so much new ground being covered in this mission that we (y'all) will be working with it for years to come. And it all ties in with accretionary processes and the primordial solar nebula, which is quite mind-boggling.
--Bill -------------------- |
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Sep 23 2015, 05:45 PM
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#68
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
in this week's Nature: The diurnal cycle of water ice on comet 67P/Churyumov–Gerasimenko
and ESA's release http://www.esa.int/Our_Activities/Space_Sc...water-ice_cycle |
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Sep 26 2015, 09:15 AM
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#69
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Junior Member Group: Members Posts: 27 Joined: 2-December 14 Member No.: 7359 |
http://blogs.esa.int/rosetta/2015/09/25/ro...t-comet-67pc-g/
ROSINA detects argon at Comet 67P The noble gas argon has been detected in the coma of Comet 67P/Churyumov-Gerasimenko for the first time, thanks to the ROSINA mass spectrometer on-board Rosetta. Its detection is helping scientists to understand the processes at work during the comet’s formation, and adds to the debate about the role of comets in delivering various ‘ingredients’ to Earth |
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Sep 28 2015, 04:59 PM
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#70
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
On the ESA site http://blogs.esa.int/rosetta/ --
Delving into the accretionary history of 67P-- blogs.esa.int/rosetta/2015/09/28/how-rosettas-comet-got-its-shape/ Rosetta presentations at EPSC-- http://blogs.esa.int/rosetta/2015/09/28/ro...riefing-online/ Lots of good science. --Bill And Another paper announced: “The "Dark Side" of 67P/Churyumov-Gerasimenko in Aug-Oct 2014 – MIRO/Rosetta continuum observations of polar night in the Southern regions,” by M. Choukroun et al, accepted for publication in Astronomy and Astrophysics. http://blogs.esa.int/rosetta/2015/10/01/ro...ets-south-pole/ --b and a Dust Jet anaglyph: http://blogs.esa.int/rosetta/2015/10/09/comet-jet-in-3d/ a how-to-deconstruct-an-anaglyph poster: http://univ.smugmug.com/Sample-Gallery/i-9...construct-L.png --b Wisdom from Dr. Matteo Massironi: http://blogs.esa.int/rosetta/2015/10/12/in...-got-its-shape/ --b -------------------- |
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Oct 28 2015, 06:18 PM
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#71
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Member Group: Members Posts: 334 Joined: 11-December 12 From: The home of Corby Crater (Corby-England) Member No.: 6783 |
Sitting by the fireside single malt in one hand, gently stroking long beard with the other.
Molecular oxygen in a comet eh? ..mmmm!? https://t.co/Mpqe21Dt57 |
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Oct 30 2015, 08:32 AM
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#72
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
Molecular Oxygen, and primordial, too. That Solar Nebula was a happening place, no?
http://blogs.esa.int/rosetta/2015/10/28/fi...gen-at-a-comet/ Kicking back next to the Quartz heater with a cup o'hot cocoa with the Laptop... --Bill A fall of comet dust and a field of boulders http://blogs.esa.int/rosetta/2015/11/09/a-...ld-of-boulders/ New papers of note: "Redistribution of particles across the nucleus of comet 67P/Churyumov-Gerasimenko" http://www.aanda.org/articles/aa/abs/2015/...aa26049-15.html "Size-frequency distribution of boulders ≥7 m on comet 67P/Churyumov-Gerasimenko" http://www.aanda.org/articles/aa/abs/2015/...aa25975-15.html -------------------- |
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Oct 31 2015, 07:17 AM
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#73
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
an entire issue of Astronomy & Astrophysics dedicated to Rosetta pre-perihelion results!
http://www.aanda.org/articles/aa/abs/2015/...s/contents.html many articles are in open access, others may require a (free) subscription |
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Nov 2 2015, 04:52 PM
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#74
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Member Group: Members Posts: 244 Joined: 2-March 15 Member No.: 7408 |
Am I missing something, or are all but one of the start times wrong for Figure 3 in Table A.1 of Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development? I don't read as many papers as a lot of you probably do, so I'm wondering if I'm somehow misinterpreting the table.
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Nov 11 2015, 11:29 AM
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#75
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
New paper and ESA Blog post:
The ups and downs of a comet’s surface http://blogs.esa.int/rosetta/2015/11/11/th...comets-surface/ "Geomorphology and Spectrophotometry of Philae's Landing Site on Comet 67P Churyumov-Gerasimenko" http://www.aanda.org/articles/aa/abs/2015/...aa25983-15.html And a year's perspective: this was an initial geomorph assessment that I presented in ESA Blog Posts last year: Geomorphology Gallery: http://univ.smugmug.com/Rosetta-Philae-Mis...-Geomorphology/ The first image is " The Geomorphology of the Agilkia landing site" http://univ.smugmug.com/Rosetta-Philae-Mis...semap_res-L.png The following features will be discussed in separate image poster-presentations: Landing site "Effusive" deposits Residual scree Plumed deposits Pitted terrain Deflated Terrain Agilkia Geomorphology Map http://univ.smugmug.com/Rosetta-Philae-Mis...ap--annot-L.png Landing Site Map http://univ.smugmug.com/Rosetta-Philae-Mis...ding_site-L.png Effusive Deposits http://univ.smugmug.com/Rosetta-Philae-Mis.../effusive-L.png Scree Deposits http://univ.smugmug.com/Rosetta-Philae-Mis...0/L/scree-L.png Plumed Deposits http://univ.smugmug.com/Rosetta-Philae-Mis.../L/plumed-L.png Pitted Terrain http://univ.smugmug.com/Rosetta-Philae-Mis.../L/pitted-L.png Deflated Terrain http://univ.smugmug.com/Rosetta-Philae-Mis...L/deflate-L.png --Bill -------------------- |
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