AbstractWe present a high-resolution (24″) study of the HI interstellar gas distribution around the radio-quiet neutron star Geminga. Based on very large array and MPIfR Effelsberg telescope data, we analyzed a 40′×40′ field around Geminga. These observations have revealed the presence of a neutral gas shell, 0.4pc in radius, with an associated HI mass of 0.8M⊙, which surrounds Geminga at a radial velocity compatible with the kinematical distance of the neutron star. In addition, morphological agreement is observed between the internal face of the HI shell and the brightest structure of Geminga’s tail observed in X-rays. We explore the possibility that this morphological agreement is the result of a physical association.


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    Title :

    The neutral gas in the environs of the Geminga gamma-ray pulsar


    Contributors:
    Giacani, E. (author) / Reynoso, E.M. (author) / Dubner, G. (author) / Goss, W.M. (author) / Green, A.J. (author) / Johnston, S. (author)

    Published in:

    Advances in Space Research ; 35 , 6 ; 1070-1073


    Publication date :

    2005-02-14


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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