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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 08549naa a2200997 4500 | |
| 001 | oai:DiVA.org:uu-270619 | |
| 003 | SwePub | |
| 008 | 160101s2015 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2706192 URI |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2015260492 DOI |
| 040 | a (SwePub)uu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Thomas, N.u Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.4 aut |
| 245 | 1 0 | a Redistribution of particles across the nucleus of comet 67P/Churyumov-Gerasimenko |
| 264 | c 2015-10-30 | |
| 264 | 1 | b EDP Sciences,c 2015 |
| 338 | a print2 rdacarrier | |
| 520 | a Context. We present an investigation of the surface properties of areas on the nucleus of comet 67P/Churyumov-Gerasimenko. Aims. We aim to show that transport of material from one part of the cometary nucleus to another is a significant mechanism that influences the appearance of the nucleus and the surface thermal properties. Methods. We used data from the OSIRIS imaging system onboard the Rosetta spacecraft to identify surface features on the nucleus that can be produced by various transport mechanisms. We used simple calculations based on previous works to establish the plausibility of dust transport from one part of the nucleus to another. Results. We show by observation and modeling that "airfall" as a consequence of non-escaping large particles emitted from the neck region of the nucleus is a plausible explanation for the smooth thin deposits in the northern hemisphere of the nucleus. The consequences are also discussed. We also present observations of aeolian ripples and ventifacts. We show by numerical modeling that a type of saltation is plausible even under the rarified gas densities seen at the surface of the nucleus. However, interparticle cohesive forces present difficulties for this model, and an alternative mechanism for the initiation of reptation and creep may result from the airfall mechanism. The requirements on gas density and other parameters of this alternative make it a more attractive explanation for the observations. The uncertainties and implications are discussed. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a space vehicles: instruments | |
| 653 | a comets: individual: 67P/Churyumov-Gerasimenko | |
| 653 | a techniques: image processing | |
| 653 | a hydrodynamics | |
| 700 | 1 | a Davidsson, Björnu Uppsala universitet,Institutionen för fysik och astronomi4 aut0 (Swepub:uu)bjoda312 |
| 700 | 1 | a El-Maarry, M. R.u Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.4 aut |
| 700 | 1 | a Fornasier, S.u Univ Paris Diderot, Univ Paris 06, Observ Paris, LESIA,CNRS, F-92195 Meudon, France.4 aut |
| 700 | 1 | a Giacomini, L.u Univ Padua, Dipartimento Geosci, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Gracia-Berna, A. G.u Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.4 aut |
| 700 | 1 | a Hviid, S. F.u Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch Asteroiden & Kometen, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Ip, W. -H4 aut |
| 700 | 1 | a Jorda, L.u Lab Astrophys Marseille, F-13388 Marseille 13, France.4 aut |
| 700 | 1 | a Keller, H. U.u Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch Asteroiden & Kometen, D-12489 Berlin, Germany.;Tech Univ Carolo Wilhelmina Braunschweig, Inst Geophys & Extraterr Phys, D-38106 Braunschweig, Germany.4 aut |
| 700 | 1 | a Knollenberg, J.u Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch Asteroiden & Kometen, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Kuehrt, E.u Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch Asteroiden & Kometen, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a La Forgia, F.u Dipartimento Fis & Astron G Galilei, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Lai, I. L.u Natl Cent Univ, Grad Inst Astron, Chungli 32054, Taiwan.4 aut |
| 700 | 1 | a Liao, Y.u Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.4 aut |
| 700 | 1 | a Marschall, R.u Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.4 aut |
| 700 | 1 | a Massironi, M.u Univ Padua, Dipartimento Geosci, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Mottola, S.u Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch Asteroiden & Kometen, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Pajola, M.u Univ Padua, Ctr Ateneo Studi & Att Spaziali, Giuseppe Colombo CISAS, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Poch, O.u Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.4 aut |
| 700 | 1 | a Pommerol, A.u Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.4 aut |
| 700 | 1 | a Preusker, F.u Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch Asteroiden & Kometen, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Scholten, F.u Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch Asteroiden & Kometen, D-12489 Berlin, Germany.4 aut |
| 700 | 1 | a Su, C. C.u Natl Chiao Tung Univ, Dept Mech Engn, Hsinchu 30010, Taiwan.4 aut |
| 700 | 1 | a Wu, J. S.u Natl Chiao Tung Univ, Dept Mech Engn, Hsinchu 30010, Taiwan.4 aut |
| 700 | 1 | a Vincent, J. -B4 aut |
| 700 | 1 | a Sierks, H.u Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Barbieri, C.u Dipartimento Fis & Astron G Galilei, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Lamy, P. L.u Lab Astrophys Marseille, F-13388 Marseille 13, France.4 aut |
| 700 | 1 | a Rodrigo, R.u Int Space Sci Inst, CH-3012 Bern, Switzerland.;CSIC INTA, Ctr Astrobiol, Madrid 28850, Spain.4 aut |
| 700 | 1 | a Koschny, D.u European Space Agcy, Sci Support Off, NL-2201 Noordwijk, Netherlands.4 aut |
| 700 | 1 | a Rickman, Hansu Uppsala universitet,Institutionen för fysik och astronomi,PAS Space Res Ctr, PL-00716 Warsaw, Poland.4 aut0 (Swepub:uu)hansrick |
| 700 | 1 | a A'Hearn, M. F.u Univ Maryland, Dept Astron, College Pk, MD 20742 USA.4 aut |
| 700 | 1 | a Barucci, M. A.u Univ Paris Diderot, Univ Paris 06, Observ Paris, LESIA,CNRS, F-92195 Meudon, France.4 aut |
| 700 | 1 | a Bertaux, J. -L4 aut |
| 700 | 1 | a Bertini, I.u Dipartimento Fis & Astron G Galilei, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Cremonese, G.u INAF Osservatorio Astron Padova, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Da Deppo, V.u CNR IFN UOS Padova LUXOR, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Debei, S.u Univ Padua, Dept Mech Engn, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a de Cecco, M.u Univ Trento, UNITN, I-38100 Trento, Italy.4 aut |
| 700 | 1 | a Fulle, M.u INAF Osservatorio Astrofis, I-34014 Trieste, Italy.4 aut |
| 700 | 1 | a Groussin, O.u Lab Astrophys Marseille, F-13388 Marseille 13, France.4 aut |
| 700 | 1 | a Gutierrez, P. J.u Inst Astrofis Andalucia CSIC, Granada 18008, Spain.4 aut |
| 700 | 1 | a Kramm, J. -R4 aut |
| 700 | 1 | a Kueppers, M.u European Space Astron Ctr ESA, Sci Operat Dept, Madrid 28691, Spain.4 aut |
| 700 | 1 | a Lara, L. M.u Inst Astrofis Andalucia CSIC, Granada 18008, Spain.4 aut |
| 700 | 1 | a Lazzarin, M.u Dipartimento Fis & Astron G Galilei, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Lopez Moreno, J. J.u Inst Astrofis Andalucia CSIC, Granada 18008, Spain.4 aut |
| 700 | 1 | a Marzari, F.u Dipartimento Fis & Astron G Galilei, I-35122 Padua, Italy.4 aut |
| 700 | 1 | a Michalik, H.u Inst Datentech & Kommunikat Netze, D-38106 Braunschweig, Germany.4 aut |
| 700 | 1 | a Naletto, G.u Univ Padua, Ctr Ateneo Studi & Att Spaziali, Giuseppe Colombo CISAS, I-35131 Padua, Italy.;INAF Osservatorio Astron Padova, I-35122 Padua, Italy.;CNR IFN UOS Padova LUXOR, I-35131 Padua, Italy.4 aut |
| 700 | 1 | a Agarwal, J.u Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Guettler, C.u Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Oklay, N.u Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.4 aut |
| 700 | 1 | a Tubiana, C.u Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany.4 aut |
| 710 | 2 | a Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.b Institutionen för fysik och astronomi4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 583q 583x 0004-6361x 1432-0746 |
| 856 | 4 | u https://www.aanda.org/articles/aa/pdf/2015/11/aa26049-15.pdf |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-270619 |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/201526049 |
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- Keller, H. U.
- Knollenberg, J.
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- La Forgia, F.
- Lai, I. L.
- Liao, Y.
- Marschall, R.
- Massironi, M.
- Mottola, S.
- Pajola, M.
- Poch, O.
- Pommerol, A.
- Preusker, F.
- Scholten, F.
- Su, C. C.
- Wu, J. S.
- Vincent, J. -B
- Sierks, H.
- Barbieri, C.
- Lamy, P. L.
- Rodrigo, R.
- Koschny, D.
- Rickman, Hans
- A'Hearn, M. F.
- Barucci, M. A.
- Bertaux, J. -L
- Bertini, I.
- Cremonese, G.
- Da Deppo, V.
- Debei, S.
- de Cecco, M.
- Fulle, M.
- Groussin, O.
- Gutierrez, P. J.
- Kramm, J. -R
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- Lara, L. M.
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- Lopez Moreno, J. ...
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