Constraining models of activity on comet 67P/Churyumov-Gerasimenko with Rosetta trajectory, rotation, and water production measurements

Autor: Attree, Nicholas, Jorda, Laurent, Groussin, Olivier, Mottola, Stefano, Thomas, Nick, Brouet, Yann, Kührt, Ekkehard, Knapmeyer, Martin, Preusker, Frank, Scholten, Frank, Knollenberg, Jorg, Hviid, Stubbe, Hartogh, Paul, Rodrigo, Rafael

Publikováno v: A&A 630, A18 (2019)

Aims. We use four observational data sets, mainly from the Rosetta mission, to constrain the activity pattern of the nucleus of comet 67P/Churyumov-Gerasimenko. Methods. We develop a numerical model that computes the production rate and non-gravitati

Externí odkaz: http://arxiv.org/abs/1901.02806

Tensile strength of 67P/Churyumov–Gerasimenko nucleus material from overhangs

Autor: Attree, Nicholas, Groussin, Olivier, Jorda, Laurent, Nébouy, David, Thomas, Nicolas, Brouet, Yann, Kührt, Ekkehard, Preusker, Frank, Scholten, Frank, Knollenberg, Jörg, Hartogh, Paul, Sierks, Holger, Barbieri, Cesare, Lamy, Philippe, Rodrigo, Rafael

We directly measured twenty overhanging cliffs on the surface of comet 67P/Churyumov–Gerasimenko extracted from the latest shape model and estimated the minimum tensile strengths needed to support them against collapse under the comet’s gravity.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::db30fe6c5e45b45281c9bd4bce6d5dcd
http://dspace.stir.ac.uk/bitstream/1893/27790/1/aa32155-17.pdf

Tensile strength of 67P/Churyumov-Gerasimenko nucleus material from overhangs

Autor: Attree, N., Groussin, O., Jorda, L., Nébouy, D., Thomas, Nicolas, Brouet, Yann, Kührt, E., Preusker, F., Scholten, F., Knollenberg, J., Hartogh, P., Sierks, H., Barbieri, C., Lamy, P., Rodrigo, R., Koschny, D., Rickman, H., Keller, H. U., A'Hearn, M. F.

Publikováno v: Attree, N.; Groussin, O.; Jorda, L.; Nébouy, D.; Thomas, Nicolas; Brouet, Yann; Kührt, E.; Preusker, F.; Scholten, F.; Knollenberg, J.; Hartogh, P.; Sierks, H.; Barbieri, C.; Lamy, P.; Rodrigo, R.; Koschny, D.; Rickman, H.; Keller, H. U.; A'Hearn, M. F. (2018). Tensile strength of 67P/Churyumov-Gerasimenko nucleus material from overhangs. Astronomy and astrophysics, 611(A33), A33. EDP Sciences 10.1051/0004-6361/201732155

We directly measured twenty overhanging cliffs on the surface of comet 67P/Churyumov-Gerasimenko extracted from the latest shape model and estimated the minimum tensile strengths needed to support them against collapse under the comet’s gravity. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15d733f1f49d430d385beb249bb31c64
https://boris.unibe.ch/112204/1/aa32155-17.pdf

Characterization of the permittivity of controlled porous water ice-dust mixtures to support the radar exploration of icy bodies

Autor: Brouet, Yann, Neves, Luisa, Sabouroux, Pierre, Levasseur-Regourd, Anny Chantal, Poch, Olivier, Encrenaz, Pierre, Pommerol, Antoine, Thomas, Nicolas, Kofman, Wlodek

Publikováno v: Journal of Geophysical Research. Planets
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2016, 121 (12), pp.2426-2443. ⟨10.1002/2016je005045⟩
Journal of Geophysical Research. Planets, 2016, 121 (12), pp.2426-2443. ⟨10.1002/2016JE005045⟩
Brouet, Y.; Neves, L.; Sabouroux, P.; Levasseur-Regourd, A. C.; Poch, O.; Encrenaz, P.; Pommerol, Antoine; Thomas, N.; Kofman, W. (2016). Characterization of the permittivity of controlled porous water ice-dust mixtures to support the radar exploration of icy bodies. Journal of Geophysical Research: Planets, 121(12), pp. 2426-2443. Wiley 10.1002/2016JE005045
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2016, 121 (12), pp.2426-2443. ⟨10.1002/2016JE005045⟩

The internal properties of porous and icy bodies in the solar system can be investigated by ground-penetrating radars (GPRs), like the COmet Nucleus Sounding Experiment by Radiowave Transmission instrument on board the Rosetta spacecraft which has so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c940d42f5431b0bf83523b77f79f142a
https://hal-insu.archives-ouvertes.fr/insu-01413105

Contribution to the determination of the permittivity of the cometary nuclei and asteroids

Autor: Brouet, Yann

Publikováno v: Astrophysique [astro-ph]. Université Pierre & Marie Curie-Paris 6, 2013. Français

Rosetta, the European cornerstone in the exploration of small Solar System bodies, is planned to rendezvous with comet 67P/Churyumov-Gerasimenko (67P/C-G) in May 2014, after a 10 years long cruise including the flybys of asteroids 2867 Steins and 21

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::478ba3df09ecc7ccbc82ddee38bab5ca
https://hal.archives-ouvertes.fr/tel-01429116/file/Yann_Brouet_these.pdf