Anisotropy of the hectometer cosmic radio background
| Autor: | Yu. V. Tokarev, G. N. Boiko, P. V. Gustov, M. L. Kaiser |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Solar minimum
Physics COSMIC cancer database Opacity Spacecraft business.industry Astrophysics::High Energy Astrophysical Phenomena Ecliptic Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 500 kHz law.invention Space and Planetary Science law Physics::Space Physics Astrophysics::Earth and Planetary Astrophysics Dipole antenna Anisotropy business |
| Zdroj: | Astronomy Letters. 26:553-557 |
| ISSN: | 1562-6873 1063-7737 |
| DOI: | 10.1134/1.1307888 |
| Popis: | 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 ~1.5×106 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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