Abstract Observations in the far ultraviolet and soft x-ray bands suggest that the interstellar medium contains several components of high temperature gas and should be emitting in the extreme ultraviolet. Indeed diffuse radiation has been detected in the extreme ultraviolet with photometric instruments, but no spectral measurements exist below 520Å. We have designed a unique grazing incidence spectrometer to study the diffuse emission between 80 and 650Å with 10 to 20Å resolution. The instrument was launched on a Black Brant sounding rocket from White Sands Missile Range on April 22, 1986. Our preliminary analysis shows the expected geocoronal and interplanetary HeI 584Å emission, and possibly other features which may originate in the hot ionized interstellar gas. Flux limits to these possible emission lines are compatible with previous broad band measurements.


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    Title :

    Spectroscopy of the extreme ultraviolet background radiation


    Contributors:

    Published in:

    Publication date :

    1986-01-01


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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