A Model of the Diffuse Ultraviolet Radiation Field

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Session 35 -- ISM: Abundances and Dust
Display presentation, Wednesday, June 14, 1995, 9:20am - 6:30pm

[35.16] A Model of the Diffuse Ultraviolet Radiation Field

J. Murthy, R. C. Henry (JHU)

We have developed a model to predict the intensity of the diffuse ultraviolet radiation field from any direction in the sky as a function of the scattering parameters of interstellar dust the albedo and the phase function and of a possible extragalact ic component. We have applied this model to a restricted set of archival data between 1250 and 2000 , placing limits of 0.3 0.6 on the albedo of the dust grains and 100 - 400 photons cm-2 s-1 sr-1 -1 on the intensity of an extragalactic background.

We plan to extend and apply this model to the far ultraviolet (900 - 1600 A) where we have hundreds of Voyager observations over the entire sky.

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