The global shape, density and rotation of Comet 67P/Churyumov-Gerasimenko from preperihelion Rosetta/OSIRIS observations

Autor: Ivano Bertini, S.J. Keihm, Olivier Groussin, Robert Gaskell, Michael Küppers, Horst Uwe Keller, Pedro J. Gutiérrez, K.-P. Wenzel, Sonia Fornasier, Detlef Koschny, Jörg Knollenberg, J.-R. Kramm, Giampiero Naletto, Marco Fulle, Nicolas Thomas, Michael F. A'Hearn, Holger Sierks, Luisa Lara, Rafael Rodrigo, Cecilia Tubiana, Carsten Güttler, G. Faury, Stefano Mottola, Monica Lazzarin, Jean-Baptiste Vincent, B. J. R. Davidsson, Jean-Loup Bertaux, Nilda Oklay, Francesco Marzari, Philippe Lamy, M. De Cecco, Stubbe F. Hviid, V. Da Deppo, F. P. Schloerb, Eric Palmer, Wing-Huen Ip, Laurent Jorda, Josef Ďurech, Cesare Barbieri, J. J. Lopez Moreno, Gabriele Cremonese, M. A. Barucci, C. Jackman, Stefano Debei, Simone Marchi, Ekkehard Kührt, Claire Capanna, Hans Rickman

Publikováno v: Icarus
Icarus, 2016, 277, pp.257-278. ⟨10.1016/j.icarus.2016.05.002⟩
Icarus (N.Y.N.Y. 1962) 277 (2016): 257–278. doi:10.1016/j.icarus.2016.05.002
info:cnr-pdr/source/autori:Jorda, L.; Gaskell, R.; Capanna, C.; Hviid, S.; Lamy, P.; ?urech, J.; Faury, G.; Groussin, O.; Gutiérrez, P.; Jackman, C.; Keihm, S. J.; Keller, H. U.; Knollenberg, J.; Kührt, E.; Marchi, S.; Mottola, S.; Palmer, E.; Schloerb, F. P.; Sierks, H.; Vincent, J. B.; A'Hearn, M. F.; Barbieri, C.; Rodrigo, R.; Koschny, D.; Rickman, H.; Barucci, M. A.; Bertaux, J. L.; Bertini, I.; Cremonese, G.; Da Deppo, V.; Davidsson, B.; Debei, S.; De Cecco, M.; Fornasier, S.; Fulle, M.; Güttler, C.; Ip, W. H.; Kramm, J. R.; Küppers, M.; Lara, L. M.; Lazzarin, M.; Lopez Moreno, J. J.; Marzari, F.; Naletto, G.; Oklay, N.; Thomas, N.; Tubiana, C.; Wenzel, K. P./titolo:The global shape, density and rotation of Comet 67P%2FChuryumov-Gerasimenko from preperihelion Rosetta%2FOSIRIS observations/doi:10.1016%2Fj.icarus.2016.05.002/rivista:Icarus (N.Y.N.Y. 1962)/anno:2016/pagina_da:257/pagina_a:278/intervallo_pagine:257–278/volume:277
Icarus, Elsevier, 2016, 277, pp.257-278. ⟨10.1016/j.icarus.2016.05.002⟩

International audience; The Rosetta spacecraft reached Comet 67P/Churyumov-Gerasimenko (hereafter 67P/C-G) in August 2014 at an heliocentric distance of 3.6 a.u. and was then put in orbit around its nucleus to perform detailed observations. Among the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::252599e640ca3d86dcbb52dc68e0b6c9
http://hdl.handle.net/20.500.12386/24620

MM5 derived ZWDs compared to observational results from VLBI, GPS and WVR

Autor: Antonio Rius, David Pino, Lubomir Gradinarsky, S.J. Keihm, L. Cucurull, D. Behrend, Rüdiger Haas, W. Schwarz

Publikováno v: Physics and Chemistry of the Earth, Parts A/B/C. 27:301-308

Modelled values of zenith wet delay (ZWD) from the non-hydrostatic numerical weather prediction (NWP) model MM5 are compared to estimated values retrieved from observations by geodetic very long baseline interferometry (VLBI), global positioning syst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4e129afa701de0fc31e8de5c3a443324
https://doi.org/10.1016/s1474-7065(02)00004-9

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Measurement of the noise improvement of a 34-meter Cassegrain antenna retrofitted with a low-backscattering strut

Autor: A. Prata, S.J. Keihm, Fernando J. S. Moreira, T.D. King, M.A. Thorburn, C. Stelzried

Publikováno v: IEEE Antennas and Propagation Society International Symposium 1997. Digest.

Large axially-symmetric ground-based dual-reflector antennas are used in a variety of applications simultaneously requiring very high gain and very low noise (e.g., satellite communications, radio astronomy, deep-space communications, and radar). In

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f199400dd1fb2a122c48859ffc64de99
https://doi.org/10.1109/aps.1997.631494

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