Anisotropy of the Hectometer Cosmic Radio Background

Details Anisotropy of the Hectometer Cosmic Radio Background Anisotropy of the Hectometer Cosmic Radio Background

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000astl...26..553t&link_type=abstract

Astronomy Letters, vol. 26, p. 553-557 (2000)

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The angular anisotropy of cosmic radio emission at frequencies of 260, 512, 772, and 1028 kHz was studied on the WIND spacecraft when it moved to a distance of about 1.5 x 10^6 km from the Earth at the deepest phase of the last solar minimum. The modulation index of the temperature of the spacecraft dipole antenna rotating in the plane of the ecliptic was found to have an indistinct frequency dependence with a maximum of 17% near 500 kHz. This result modifies significantly the conclusions of the only similar experiment on the IMP-6 spacecraft carried out under less favorable observing conditions. Existing ideas about the causes of the radio-background anisotropy in the opacity region of the Galactic gas disk are briefly reviewed.

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