When dark is light enough - Measuring the extragalactic background light

Details When dark is light enough - Measuring the extragalactic background light When dark is light enough - Measuring the extragalactic background light

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988msngr..51...34m&link_type=abstract

ESO Messenger (ISSN 0722-6691), March 1988, p. 34-37.

Physics

Background Radiation, Extraterrestrial Radiation, Intergalactic Media, Light (Visible Radiation), Cosmic Dust, Luminosity, Nebulae, Opacity, Thermal Radiation

Scientific paper

A method for the measurement of extragalactic background light (EBL), which utilizes the screening effect of a dark nebula on the background light, is described. It is shown how the spectral energy distribution of the observable surface brightness difference (dark nebula minus surroundings) changes for different assumed values of the EBL intensity. For the relationship between the optical and IR brightness in L 1642, the optical albedo of the dust was derived as well as the ratio of visual to 100-micron opacity.

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