A Measurement of the Angular Power Spectrum of the Microwave Background Made from the High Chilean Andes
| Autor: | J. Puchalla, Mark J. Devlin, T. Herbig, H. T. Tran, Lyman A. Page, M. R. Nolta, W. B. Dorwart, E. Torbet, Amber Miller |
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| Rok vydání: | 1999 |
| Předmět: |
media_common.quotation_subject
Cosmic microwave background FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences law.invention Telescope law 0103 physical sciences Limit (mathematics) Anisotropy 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics media_common Physics 010308 nuclear & particles physics Astrophysics (astro-ph) Astrophysics::Instrumentation and Methods for Astrophysics Spectral density Astronomy and Astrophysics Angular spectrum method Space and Planetary Science Sky Microwave |
| DOI: | 10.48550/arxiv.astro-ph/9905100 |
| Popis: | We report on a measurement of the angular spectrum of the anisotropy of the microwave sky at 30 and 40 GHz between l=50 and l=200 over approximately 600 sq. deg. The data support a rise in the angular spectrum to a maximum with $\delta T_l \approx 85 \mu$K at l=200. We also give a 2-sigma upper limit of $\delta T_l < 122 \mu$K at l=432 at 144 GHz. These results come from the first campaign of the Mobile Anisotropy Telescope (MAT) on Cerro Toco, Chile. To assist in assessing the site, we present plots of the fluctuations in atmospheric emission at 30 and 144 GHz. Comment: 5 pages, 3 figures, 2 tables; revised 10 June. Submitted to ApJL. Website at http://pupgg.princeton.edu/~cmb |
| Databáze: | OpenAIRE |
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