| Autor: |
A. A. Klypin, I. A. Strukov, D. P. Skulachev |
| Rok vydání: |
1988 |
| Předmět: |
|
| Zdroj: |
Acta Astronautica. 17:903-907 |
| ISSN: |
0094-5765 |
| Popis: |
We carried out the first satellite experiment for searching the anisotropies of the microwave background. The main goal of the experiment was to obtain a radio brightness map of the sky at 8 mm wavelength band. The experiment gives the direction and amplitude (TD) of the dipole component at 90% confidence level α = 11h17m ± 10m; δ = −7.5 ± 2.5°; TD = 3.16 ± 0.12 mK. The variance analysis gives the most stringent constraints on fluctuations of the relic background. For the models with the Zeldovich spectrum of primordial fluctuations we found an upper limit on the quadrupole as 1.6 × 10−5 at 95% confidence level. We are the first to obtain model-independent estimates of the first fifteen multipole components. We obtained upper limits on correlation function of angular fluctuations 〈ΔT1ΔT2〉 ≤ 0.005 mK2 for the angular range from 20 to 160°. Intense galactic emission was observed over longitude interval from 90 to 270° and latitudes ±5°. The total flux from this longitude interval is approx. 56,000 Jy. The experimental studies confirmed that a space experiment gives a possibility to reach sensitivities high enough to estimate an anisotropy that is less than the values predicted by modern cosmological models. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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