Abstract The first map of O vi λ1035 emission of the Cygnus Loop has now been obtained with Voyager. The first good spectra of the sub-Lyα region in the Cygnus Loop and in the LMC remnant N49 have been obtained with the Hopkins Ultraviolet Telescope. The lines detected below 1200 Å include S vi λλ933,945, C iii λ977, N iii λ991, and O vi λλ1032, 1038. The O vi luminosities of the Cygnus Loop and of N49 exceed their soft X-ray luminosities. There is O vi emission at the primary shock front in the Cygnus Loop and from the bright optical filaments. The HUT spectra of the Cygnus Loop can be interpreted in terms of shocks with velocities of 170–190 km s−1; the differences between the two spectra are due to the time since the beginning of the shock-cloud encounter.


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    Title :

    Sub-Lyman-α observations of supernova remnants


    Contributors:
    Long, K.S. (author)

    Published in:

    Publication date :

    1993-01-01


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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