Zobrazeno 1 - 10
of 658
pro vyhledávání: '"Keller, H. U."'
Autor:
Attree, N., Gutiérrez, P., Groussin, O., Bürger, J., Keller, H. U., Kramer, T., Manghi, R. Lasagni, Läuter, M., Lemos, P., Markkanen, J., Marschall, R., Schuckart, C.
Publikováno v:
A&A 690, A82 (2024)
We investigate the ability of a simultaneous fitting of comet 67P/Churyumov-Gerasimenko's non-gravitational forces, torques and total water-outgassing rate, as observed by Rosetta, to constrain complex thermophysical models of cometary material. We e
Externí odkaz:
http://arxiv.org/abs/2408.10877
Autor:
Tubiana, C., Rinaldi, G., Güttler, C., Snodgrass, C., Shi, X., Hu, X., Marschall, R., Fulle, M., Bockelée-Morvan, D., Naletto, G., Capaccioni, F., Sierks, H., Arnold, G., Barucci, M. A., Bertaux, J. -L., Bertini, I., Bodewits, D., Capria, M. T., Ciarniello, M., Cremonese, G., Crovisier, J., Da Deppo, V., Debei, S., De Cecco, M., Deller, J., De Sanctis, M. C., Davidsson, B., Doose, L., Erard, S., Filacchione, G., Fink, U., Formisano, M., Fornasier, S., Gutiérrez, P. J., Ip, W. -H., Ivanovski, S., Kappel, D., Keller, H. U., Kolokolova, L., Koschny, D., Krueger, H., La Forgia, F., Lamy, P. L., Lara, L. M., Lazzarin, M., Levasseur-Regourd, A. C., Lin, Z. -Y., Longobardo, A., López-Moreno, J. J., Marzari, F., Migliorini, A., Mottola, S., Rodrigo, R., Taylor, F., Toth, I., Zakharov, V.
On 27 Apr 2015, when 67P/C-G was at 1.76 au from the Sun and moving towards perihelion, the OSIRIS and VIRTIS-M instruments on Rosetta observed the evolving dust and gas coma during a complete rotation of the comet. We aim to characterize the dust, H
Externí odkaz:
http://arxiv.org/abs/1905.03022
Autor:
Fornasier, S., Feller, C., Hasselmann, P. H., Barucci, M. A., Sunshine, J., Vincent, J. -B., Shi, X., Sierks, H., Naletto, G., Lamy, P. L., Rodrigo, R., Koschny, D., Davidsson, B., Bertaux, J. -L., Bertini, I., Bodewits, D., Cremonese, G., Da Deppo, V., Debei, S., De Cecco, M., Deller, J., Ferrari, S., Fulle, M., Gutierrez, P. J., Güttler, C., Ip, W. -H., Jorda, L., Keller, H. U., Lara, M. L., Lazzarin, M., Moreno, J. J. Lopez, Lucchetti, A., Marzari, F., Mottola, S., Pajola, M., Toth, I., Tubiana, C.
Publikováno v:
A&A 630, A13 (2019)
The southern hemisphere of comet 67P/Churyumov-Gerasimenko (67P) became observable by the Rosetta mission in March 2015, a few months before cometary southern vernal equinox. The Anhur region in the southern part of the comet's larger lobe was found
Externí odkaz:
http://arxiv.org/abs/1903.09017
Our aim is to investigate early activity (July 2014) of 67P/CG with 3D coma and radiative transfer modeling of MIRO measurements, accounting for nucleus shape, illumination, and orientation of the comet. We investigate MIRO line shape information for
Externí odkaz:
http://arxiv.org/abs/1902.10389
Autor:
Feller, C., Fornasier, S., Ferrari, S., Hasselmann, P. H., Barucci, A., Massironi, M., Deshapriya, J. D. P, Sierks, H., Naletto, G., Lamy, P. L., Rodrigo, R., Koschny, D., Davidsson, B. J. R., Bertaux, J. -L., Bertini, I., Bodewits, D., Cremonese, G., Da Deppo, V., Debei, S., De Cecco, M., Fulle, M., Gutiérrez, P. J., Güttler, C., Ip, W. -H., Keller, H. U., Lara, L. M., Lazzarin, M., López-Moreno, J. J., Marzari, F., Shi, X., Tubiana, C., Gaskell, B., La Forgia, F., Lucchetti, A., Mottola, S., Pajola, M., Preusker, F., Scholten, F.
In April 2016, the Rosetta spacecraft performed a low-altitude low-phase-angle flyby over the Imhotep-Khepry transition of 67P/Churyumov-Gerasimenko's nucleus. The OSIRIS/Narrow-Angle-Camera (NAC) acquired 112 images with mainly 3 broadband filters i
Externí odkaz:
http://arxiv.org/abs/1812.09415
Autor:
Fornasier, S., Hoang, V. H., Hasselmann, P. H., Feller, C., Barucci, M. A., Deshapriya, J. D. P., Sierks, H., Naletto, G., Lamy, P. L., Rodrigo, R., Koschny, D., Davidsson, B., Agarwal, J., Barbieri, C., Bertaux, J. -L., Bertini, I., Bodewits, D., Cremonese, G., Da Deppo, V., Debei, S., De Cecco, M., Deller, J., Ferrari, S., Fulle, M., Gutierrez, P. J., Guttler, C., Ip, W. -H., Keller, H. U., Küppers, M., La Forgia, F., Lara, M. L., Lazzarin, M., Lin, Z-Y, Moreno, J. J. Lopez, Marzari, F., Mottola, S., Pajola, M., Shi, X., Toth, I., Tubiana, C.
Publikováno v:
A&A 630, A7 (2019)
The Rosetta space probe accompanied comet 67P/Churyumov-Gerasimenko for more than two years, obtaining an unprecedented amount of unique data of the comet nucleus and inner coma. This work focuses identifying the source regions of faint jets and outb
Externí odkaz:
http://arxiv.org/abs/1809.03997
Autor:
Attree, N., Groussin, O., Jorda, L., Nébouy, D., Thomas, N., Brouet, Y., 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., Auger, A. -T., Barucci, M. A., Bertaux, J. -L., Bertini, I., Bodewits, D., Boudreault, S., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Deller, J., El-Maarry, M. R., Fornasier, S., Fulle, M., Gutiérrez, P. J., Güttler, C., Hviid, S., Ip, W. -H, Kovacs, G., Kramm, J. R., Küppers, M., Lara, L. M., Lazzarin, M., Moreno, J. J. Lopez, Lowry, S., Marchi, S., Marzari, F., Mottola, S., Naletto, G., Oklay, N., Pajola, M., Toth, I., Tubiana, C., Vincen, J. -B., Shi, X.
Publikováno v:
A&A 611, A33 (2018)
We directly measure twenty overhanging cliffs on the surface of comet 67P/Churyumov-Gerasimenko extracted from the latest shape model and estimate the minimum tensile strengths needed to support them against collapse under the comet's gravity. We fin
Externí odkaz:
http://arxiv.org/abs/1712.07508
Autor:
Agarwal, J., Della Corte, V., Feldman, P. D., Geiger, B., Merouane, S., Bertini, I., Bodewits, D., Fornasier, S., Gruen, E., Hasselmann, P., Hilchenbach, M., Hoefner, S., Ivanovski, S., Kolokolova, L., Pajola, M., Rotundi, A., Sierks, H., Steffl, A. J., Thomas, N., A'Hearn, M. F., Barbieri, C., Barucci, M. A., Bertaux, J. -L., Boudreault, S., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Deller, J. F., Feaga, L. M., Fischer, H., Fulle, M., Gicquel, A., Groussin, O., Guettler, C., Gutierrez, P. J., Hofmann, M., Hornung, K., Hviid, S. F., Ip, W. -H., Jorda, L., Keller, H. U., Kissel, J., Knollenberg, J., Koch, A., Koschny, D., Kramm, J. -R., Kuehrt, E., Kueppers, M., Lamy, P. L., Langevin, Y., Lara, L. M., Lazzarin, M., Lin, Z. -Y., Moreno, J. J. Lopez, Lowry, S. C., Marzari, F., Mottola, S., Naletto, G., Oklay, N., Parker, J. Wm., Rodrigo, R., Rynoe, J., Shi, X., Stenzel, O., Tubiana, C., Vincent, J. -B., Weaver, H. A., Zaprudin, B.
Publikováno v:
MNRAS 469, S606-S625, 2017
On 3 July 2016, several instruments on board ESA's Rosetta spacecraft detected signs of an outburst event on comet 67P, at a heliocentric distance of 3.32 AU from the sun, outbound from perihelion. We here report on the inferred properties of the eje
Externí odkaz:
http://arxiv.org/abs/1710.10235
Autor:
Keller, H. U., Mottola, S., Hviid, S. F., Agarwal, J., Kührt, E., Skorov, Y., Otto, K., Vincent, J. -B., Oklay, N., Schröder, S. E., Davidsson, B., Pajola, M., Shi, X., Bodewits, D., Toth, I., Preusker, F., Scholten, F., Sierks, H., Barbieri, C., Lamy, P., Rodrigo, R., Koschny, D., Rickman, H., A'Hearn, M. F., Barucci, M. A., Bertaux, J. -L., Bertini, I., Cremonese, G., Da Deppo, V., Debei, S., De Cecco, M., Deller, J., Fornasier, S., Fulle, M., Groussin, O., Gutiérrez, P. J., Güttler, C., Hofmann, M., Ip, W. -H., Jorda, L., Knollenberg, J., Kramm, J. R., Küppers, M., Lara, L. -M., Lazzarin, M., Moreno, J. J. Lopez, Marzari, F., Naletto, G., Tubiana, C., Thomas, N.
Publikováno v:
Monthly Notices of the Royal Astronomical Society stx1726, 13 July 2017
We collect observational evidence that supports the scheme of mass transfer on the nucleus of comet 67P/Churyumov-Gerasimenko. The obliquity of the rotation axis of 67P causes strong seasonal variations. During perihelion the southern hemisphere is f
Externí odkaz:
http://arxiv.org/abs/1707.06812
Autor:
Fornasier, S., Feller, C., Lee, J. C., Ferrari, S., Massironi, M., Hasselmann, P. H., Deshapriya, J. D. P, Barucci, M. A., El-Maarry, M. R., Giacomini, L., Mottola, S., Keller, H. U., Ip, W. H., Lin, Z. Y., Sierks, H., Barbieri, C., Lamy, P. L., Rodrigo, R., Koschny, D., Rickman, H., Agarwal, J., A'Hearn, M., Bertaux, J. -L., Bertini, I., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Deller, J., Fulle, M., Groussin, O., Gutierrez, P. J., Guettler, C., Hofmann, M., Hviid, S. F., Jorda, L., Knollenberg, J ., Kovacs, G., Kramm, R., Kuehrt, E., Kueppers, M., Lara, M. L., Lazzarin, M., Moreno, J. J. Lopez, Marzari, F., Naletto, G., Oklay, N., Pajola, M., Shi, X., Thomas, N., Toth, I., Tubiana, C., Vincent, J. -B.
The Southern hemisphere of the 67P/Churyumov-Gerasimenko comet has become visible from Rosetta only since March 2015. It was illuminated during the perihelion passage and therefore it contains the regions that experienced the strongest heating and er
Externí odkaz:
http://arxiv.org/abs/1707.02945