Extragalactic infrared backgrounds, polarization, and universal magnetic field

Details Extragalactic infrared backgrounds, polarization, and universal magnetic field Extragalactic infrared backgrounds, polarization, and universal magnetic field

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...340l..45d&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 340, May 15, 1989, p. L45-L48. Research supported by the Agenzia

Astronomy and Astrophysics

Astrophysics

4

Extragalactic Radio Sources, Interstellar Magnetic Fields, Linear Polarization, Relic Radiation, Submillimeter Waves, Universe, Absorption Spectra, Cosmic Dust, Near Infrared Radiation, Stellar Radiation

Scientific paper

A model is developed in which the submillimeter excess recently measured in a rocket experiment is explained as emission from extragalactic dust heated by Population III stars. The linear polarization expected in such a background if a universal magnetic field (UMF) is present in the universe is calculated. This is compared with existing polarization upper limits in order to get information about the UMF. For a wide range of the important parameters, the present strength of the magnetic field should be lower than 5 x 10 to the -10th G.

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