Long-term monitoring of comet 67P/Churyumov-Gerasimenko’s jets with OSIRIS onboard Rosetta - Archive ouverte HAL Access content directly
Journal Articles Monthly Notices of the Royal Astronomical Society Year : 2017

Long-term monitoring of comet 67P/Churyumov-Gerasimenko’s jets with OSIRIS onboard Rosetta

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M. I. Schmitt
  • Function : Author
  • PersonId : 1014687
Jean-Loup Bertaux
  • Function : Author
  • PersonId : 914210
Pedro J. Gutiérrez
  • Function : Author
  • PersonId : 880386
Laurent Jorda
Michael Küppers
Maurizio Pajola

Abstract

We used the OSIRIS camera system onboard the Rosetta spacecraft to monitor jet activity of comet 67P/Churyumov-Gerasimenko. With a monthly cadence, we covered an epoch from December 2014 to October 2015, thereby including the first equinox and the perihelion passage. Jet features were measured in individual images, which were used to perform a statistical inversion. The study provides maps for the locations of likeliest sources of jet activity on the comet’s surface as a function of time. The sources follow the sub-solar latitude, show clustering and a broadening of the activity band with time in the Northern hemisphere. On the Southern hemisphere they are not clustered but show a broader spread over all longitudes which is either related to the north-south dichotomy of the comet’s topography or due to a higher insolation during southern summer.
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Dates and versions

insu-01574684 , version 1 (13-11-2020)

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M. I. Schmitt, Cécilia Tubiana, Carsten Güttler, Holger Sierks, Jean-Baptiste Vincent, et al.. Long-term monitoring of comet 67P/Churyumov-Gerasimenko’s jets with OSIRIS onboard Rosetta. Monthly Notices of the Royal Astronomical Society, 2017, 469 (Suppl_2), pp.S380-S385. ⟨10.1093/mnras/stx1780⟩. ⟨insu-01574684⟩
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