Abstract After more than two years of successful in-orbit operations, the γ-ray coded aperture SIGMA telescope has accumulated 800 hours of live-time observations of the Galactic Center region, including the remarkable hard source identified with the X-ray source 1E 1740.7–2942. The long-term behavior of the soft γ-ray emission of 1E 1740.7–2942, as determined from the SIGMA survey, supplemented with previously available soft γ-ray data, leads to its identification with a singular radio source, which consists of a double sided radio jet emanating from a compact variable core whose variability is correlated with that of the soft γ-ray source. The compact radio core, which lies well inside the improved soft γ-ray (40–150 keV) error circle (27″ radius) derived from the high-resolution SIGMA survey, is also inside the ROSAT and TTM error circle derived respectively in the soft and hard X-ray bands.


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    Titel :

    1E 1740.7-2942 revisited: Confirmation of its identification with the core of a double sided radio jet structure


    Beteiligte:
    Cordier, B. (Autor:in) / Lebrun, F. (Autor:in) / Mirable, F. (Autor:in) / Paul, J. (Autor:in) / Mandrou, P. (Autor:in) / Bouchet, L. (Autor:in) / Rogues, J.P. (Autor:in) / Vedrenne, G. (Autor:in) / Sunyaev, R. (Autor:in) / Churazov, E. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 13 , 12 ; 611-616


    Erscheinungsdatum :

    1993-01-01


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    1E 1740.7-2942 Revisited: Confirmation of its Identification with the Core of a Double Sided Radio Jet Structure

    Cordier, B. / Lebrun, F. / Mirable, F. et al. | British Library Conference Proceedings | 1993



    Nr. 2942

    DataCite | 1901


    The Great Annihilator 1E1740.7-2942: Molecular Cloud Connection and Coronal Structure

    Vilhu, O. / Hannikainen, D. / Muhli, P. et al. | British Library Online Contents | 1997


    Observations of Hard Galactic Center Source 1E1740.7-2942 with ART-P/Granat

    Grebenev, S. A. / Pavlinsky, M. N. / Sunyaev, R. A. et al. | British Library Conference Proceedings | 1995