Abstract A large data base of near nucleus images of Comet Halley in white light, Kodak wratten filters and IHW filters was built up using an image intensifier camera and a 35 cm aperture f/11 telescope at Gurushikhar, Mt.Abu., India (24°39′N, 72°43′E, Alt.1700 m) during 1985–1986. The images taken on January 8.590 and 8.632 UT (R∼0.9 AU, Δ ∼ 1.29 AU) show distinct condensation region in the tail direction. From the relative position of the condensation region in two frames, its velocity was inferred as ∼ 37±3 km/s in the anti-sunward direction. The wide field photographic study shows this feature to be the precursor of the disconnection event observed on 10th Jan 1986. Based on the Near Nucleus photographs obtained by us and wide field photographs from other sources, it is shown that there is a strong correlation of nuclear activity with the tail disturbances observed on 31st Dec 1985, 8th and 10th Jan 1986.


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    Titel :

    Observations on near nucleus activity in comet Halley during January 1986


    Beteiligte:
    Debi Prasad, C. (Autor:in) / Chandrasekhar, T. (Autor:in) / Desai, J.N. (Autor:in) / Ashok, N.M. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1989-01-01


    Format / Umfang :

    4 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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