Rocket observations of the diffuse ultraviolet background

Details Rocket observations of the diffuse ultraviolet background Rocket observations of the diffuse ultraviolet background

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...139..481j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 139, no. 2, Oct. 1984, p. 481-495. Research sponsored by the Bundesministerium

Computer Science

Sound

25

Background Radiation, Interstellar Matter, Rocket Sounding, Ultraviolet Astronomy, Astronomical Photometry, Broadband, Cosmic Dust, Focal Plane Devices, Galactic Radiation, Gas Density, Photometers

Scientific paper

The objective of the experiment reported here was to obtain additional information on the absolute intensity level and spatial variation of the diffuse ultraviolet background and thereby gain insight into the origin of this radiation. The experiment used three ultraviolet sensitive photometers placed in the focal plane of a 95-cm, f/2.8 normal incidence telescope flown on board an Aries sounding rocket. The measured intensities clearly refute the hypothesis of an isotropic background, the intensities of the high galactic latitude being definitely lower than the intensities seen at intermediate latitudes. Moreover, the count rates in all three channels along the slow scan exhibit local enhancements as well as an overall trend. In general, the spatial variations exhibited by the data correlate with the line of sight of neutral hydrogen column density as determined from 21-cm radio observations. This fact demonstrates that there is a galactic component to the diffuse ultraviolet radiation field.

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