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    Perturbation of the Mars atmosphere by the near-collision with Comet C/2013 A1 (Siding Spring)

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    Yelle(2014).pdf (1.144Mb)
    Authors
    Yelle, R.V.
    Mahieux, A.
    Morrison, S.
    Vuitton, V.
    Hörst, S.M.
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    Discipline
    Physical sciences
    Subject
    Atmospheres, structure
    Comets
    Mars
    Audience
    Scientific
    Date
    2014
    Metadata
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    Description
    The martian upper atmosphere could be strongly perturbed by the near collision with Comet C/2013 A1 (Siding Spring). Significant mass and energy will be deposited in the upper atmosphere of Mars if the comet coma is sufficiently dense. We predict that comet H2O production rates larger than 1028 molecules/s would produce temperature increases exceeding 30K and the H density in the upper atmosphere will approximately double. The temperature perturbation will persist for several hours and the increased H density for tens of hours. Drag on orbiting spacecraft may increase by substantial factors, depending upon comet activity, because of the thermal perturbation to the atmosphere. Observation of these perturbations may provide insight into the thermal and chemical balances of the atmosphere.
    Citation
    Yelle, R.V.; Mahieux, A.; Morrison, S.; Vuitton, V.; Hörst, S.M. (2014). Perturbation of the Mars atmosphere by the near-collision with Comet C/2013 A1 (Siding Spring). , Icarus, Vol. 237, 202-210, DOI: 10.1016/j.icarus.2014.03.030.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/2845
    doi: http://dx.doi.org/10.1016/j.icarus.2014.03.030
    scopus: 2-s2.0-84900792053
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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