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The 2016 Feb 19 outburst of comet 67P/CG an ESA Rosetta multi-instrument study
- Grun, E. (author)
- Agarwal, J. (author)
- Altobelli, N. (author)
- show more...
- Altwegg, K. (author)
- Bentley, M. S. (author)
- Biver, N. (author)
- Della Corte, V. (author)
- Edberg, Niklas J. T. (author)
- Feldman, P. D. (author)
- Galand, M. (author)
- Geiger, B. (author)
- Goetz, C. (author)
- Grieger, B. (author)
- Guettler, C. (author)
- Henri, P. (author)
- Hofstadter, M. (author)
- Horanyi, M. (author)
- Jehin, E. (author)
- Krueger, H. (author)
- Lee, S. (author)
- Mannel, T. (author)
- Morales, E. (author)
- Mousis, O. (author)
- Mueller, M. (author)
- Opitom, C. (author)
- Rotundi, A. (author)
- Schmied, R. (author)
- Schmidt, F. (author)
- Sierks, H. (author)
- Snodgrass, C. (author)
- Soja, R. H. (author)
- Sommer, M. (author)
- Srama, R. (author)
- Tzou, C. -Y (author)
- Vincent, J. -B (author)
- Yanamandra-Fisher, P. (author)
- A'Hearn, M. F. (author)
- Eriksson, Anders (author)
- Barbieri, C. (author)
- Barucci, M. A. (author)
- Bertaux, J. -L (author)
- Bertini, I. (author)
- Burch, J. (author)
- Colangeli, L. (author)
- Cremonese, G. (author)
- Da Deppo, V. (author)
- Davidsson, Björn (author)
- Debei, S. (author)
- De Cecco, M. (author)
- Deller, J. (author)
- Feaga, L. M. (author)
- Ferrari, M. (author)
- Fornasier, S. (author)
- Fulle, M. (author)
- Gicquel, A. (author)
- Gillon, M. (author)
- Green, S. F. (author)
- Groussin, O. (author)
- Gutierrez, P. J. (author)
- Hofmann, M. (author)
- Hviid, S. F. (author)
- Ip, W. -H (author)
- Ivanovski, S. (author)
- Jorda, L. (author)
- Keller, H. U. (author)
- Knight, M. M. (author)
- Knollenberg, J. (author)
- Koschny, D. (author)
- Kramm, J. -R (author)
- Kuehrt, E. (author)
- Kuppers, M. (author)
- Lamy, P. L. (author)
- Lara, L. M. (author)
- Lazzarin, M. (author)
- Lopez-Moreno, J. J. (author)
- Manfroid, J. (author)
- Epifani, E. Mazzotta (author)
- Marzari, F. (author)
- Naletto, G. (author)
- Oklay, N. (author)
- Palumbo, P. (author)
- Parker, J. Wm. (author)
- Rickman, Hans (author)
- Rodrigo, R. (author)
- Rodriguez, J. (author)
- Schindhelm, E. (author)
- Shi, X. (author)
- Sordini, R. (author)
- Steffl, A. J. (author)
- Stern, S. A. (author)
- Thomas, N. (author)
- Tubiana, C. (author)
- Weaver, H. A. (author)
- Weissman, P. (author)
- Zakharov, V. V. (author)
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- (publisher)
- (publisher)
- 2016
- 2016
- English.
- In: Monthly notices of the Royal Astronomical Society. - 0035-8711. ; 462, S220-S234
- swepub:Mat__t
Abstract
Subject headings
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- On 2016 Feb 19, nine Rosetta instruments serendipitously observed an outburst of gas and dust from the nucleus of comet 67P/Churyumov-Gerasimenko. Among these instruments were cameras and spectrometers ranging from UV over visible to microwave wavelengths, in situ gas, dust and plasma instruments, and one dust collector. At 09: 40 a dust cloud developed at the edge of an image in the shadowed region of the nucleus. Over the next two hours the instruments recorded a signature of the outburst that significantly exceeded the background. The enhancement ranged from 50 per cent of the neutral gas density at Rosetta to factors > 100 of the brightness of the coma near the nucleus. Dust related phenomena (dust counts or brightness due to illuminated dust) showed the strongest enhancements (factors > 10). However, even the electron density at Rosetta increased by a factor 3 and consequently the spacecraft potential changed from similar to-16 V to -20 V during the outburst. A clear sequence of events was observed at the distance of Rosetta ( 34 km from the nucleus): within 15 min the Star Tracker camera detected fast particles (similar to 25 m s(-1)) while 100 mu m radius particles were detected by the GIADA dust instrument similar to 1 h later at a speed of 6 m s(-1). The slowest were individual mm to cm sized grains observed by the OSIRIS cameras. Although the outburst originated just outside the FOV of the instruments, the source region and the magnitude of the outburst could be determined.
Subject headings
- Natural Sciences (hsv)
- Physical Sciences (hsv)
- Astronomy, Astrophysics and Cosmology (hsv)
- Naturvetenskap (hsv)
- Fysik (hsv)
- Astronomi, astrofysik och kosmologi (hsv)
Keyword
- comets: individual: 67P/Churyumov-Gerasimenko
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- By the author/editor
- Grun, E.
- Agarwal, J.
- Altobelli, N.
- Altwegg, K.
- Bentley, M. S.
- Biver, N.
- show more...
- Della Corte, V.
- Edberg, Niklas J ...
- Feldman, P. D.
- Galand, M.
- Geiger, B.
- Goetz, C.
- Grieger, B.
- Guettler, C.
- Henri, P.
- Hofstadter, M.
- Horanyi, M.
- Jehin, E.
- Krueger, H.
- Lee, S.
- Mannel, T.
- Morales, E.
- Mousis, O.
- Mueller, M.
- Opitom, C.
- Rotundi, A.
- Schmied, R.
- Schmidt, F.
- Sierks, H.
- Snodgrass, C.
- Soja, R. H.
- Sommer, M.
- Srama, R.
- Tzou, C. -Y
- Vincent, J. -B
- Yanamandra-Fishe ...
- A'Hearn, M. F.
- Eriksson, Anders
- Barbieri, C.
- Barucci, M. A.
- Bertaux, J. -L
- Bertini, I.
- Burch, J.
- Colangeli, L.
- Cremonese, G.
- Da Deppo, V.
- Davidsson, Björn
- Debei, S.
- De Cecco, M.
- Deller, J.
- Feaga, L. M.
- Ferrari, M.
- Fornasier, S.
- Fulle, M.
- Gicquel, A.
- Gillon, M.
- Green, S. F.
- Groussin, O.
- Gutierrez, P. J.
- Hofmann, M.
- Hviid, S. F.
- Ip, W. -H
- Ivanovski, S.
- Jorda, L.
- Keller, H. U.
- Knight, M. M.
- Knollenberg, J.
- Koschny, D.
- Kramm, J. -R
- Kuehrt, E.
- Kuppers, M.
- Lamy, P. L.
- Lara, L. M.
- Lazzarin, M.
- Lopez-Moreno, J. ...
- Manfroid, J.
- Epifani, E. Mazz ...
- Marzari, F.
- Naletto, G.
- Oklay, N.
- Palumbo, P.
- Parker, J. Wm.
- Rickman, Hans
- Rodrigo, R.
- Rodriguez, J.
- Schindhelm, E.
- Shi, X.
- Sordini, R.
- Steffl, A. J.
- Stern, S. A.
- Thomas, N.
- Tubiana, C.
- Weaver, H. A.
- Weissman, P.
- Zakharov, V. V.
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