Measurements of Anisotropy in the Cosmic Microwave Background Radiation at Degree Angular Scales Near the Stars Sigma Hercules and Iota Draconis

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dc.creatorClapp, A. C.
dc.creatorDevlin, M. J.
dc.creatorGundersen, J. O.
dc.creatorHagmann, C. A.
dc.creatorHristov, V. V.
dc.creatorLange, A. E.
dc.creatorLim, M.
dc.creatorLubin, P. M.
dc.creatorMauskopf, P. D.
dc.creatorMeinhold, P. R.
dc.creatorRichards, P. L.
dc.creatorSmoot, G. F.
dc.creatorTimbie, S. T. Tanaka P. T.
dc.creatorWuensche, C. A.
dc.date1994-04-28
dc.date1994-05-01
dc.date.accessioned2026-07-07T08:58:14Z
dc.date.available2026-07-07T08:58:14Z
dc.descriptionWe present results from two four-frequency observations centered near the stars Sigma Hercules and Iota Draconis during the fourth flight of the Millimeter-wave Anisotropy eXperiment (MAX). The observations were made of 6 x 0.6-degree strips of the sky with 1.4-degree peak to peak sinusoidal chop in all bands. The FWHM beam sizes were 0.55+/-0.05 degrees at 3.5 cm-1 and a 0.75+/-0.05 degrees at 6, 9, and 14 cm-1. Significant correlated structures were observed at 3.5, 6 and 9 cm-1. The spectra of these signals are inconsistent with thermal emission from known interstellar dust populations. The extrapolated amplitudes of synchrotron and free-free emission are too small to account for the amplitude of the observed structures. If the observed structures are attributed to CMB anisotropy with a Gaussian autocorrelation function and a coherence angle of 25', then the most probable values are DT/TCMB = (3.1 +1.7-1.3) x 10^-5 for the Sigma Hercules scan, and DT/TCMB = (3.3 +/- 1.1) x 10^-5 for the Iota Draconis scan (95% confidence upper and lower limits). Finally a comparison of all six MAX scans is presented.
dc.description13 pages, postscript file, 2 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/9404072
dc.identifierhttp://arxiv.org/abs/astro-ph/9404072
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/147243
dc.subjectAstrophysics
dc.titleMeasurements of Anisotropy in the Cosmic Microwave Background Radiation at Degree Angular Scales Near the Stars Sigma Hercules and Iota Draconis
dc.typetext

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