1992 (IPP)

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    On the missing interstellar comets
    (2014-11-23) Sen, A.K.; Rana, N. C.
    Comets are supposed to have been born in the outer part of the solar nebula and later thrown into their present location of the Oort cloud by perturbations of the giant planets. This process was inefficient and the majority of the comets were totally lost into the interstellar medium, instead of being trapped in the Oort cloud. Assuming stars in the solar neighbourhood to have formed in the same way as the Sun, one can find the number of interstellar comets and also estimate the expected number of detectable interstellar comets (McGlynn & Chapman 1989). In this work, using our present day knowledge of the local interstellar medium, we first calculate the population of interstellar comets within the past 150 year or so, is therefore nothing unusual and fully consistent with the existing models of the oort cloud and solar system formation.