New CMB Power Spectrum Constraints from MSAMI

Abstract

We present new cosmic microwave background (CMB) anisotropy results from the combined analysis of the three flights of the first Medium Scale Anisotropy Measurement (MSAM1). This balloon-borne bolometric instrument measured about 10 square degrees of sky at half-degree resolution in 4 frequency bands from 5.2 icm to 20 icm with a high signal-to-noise ratio. Here we present an overview of our analysis methods, compare the results from the three flights, derive new constraints on the CMB power spectrum from the combined data and reduce the data to total-power Wiener-filtered maps of the CMB. A key feature of this new analysis is a determination of the amplitude of CMB fluctuations at $\ell \sim 400$. The analysis technique is described in a companion paper by Knox.

9 pages, 6 included figures

References in corpus (3)

• Radical Compression of Cosmic Microwave Background Data
• An Efficient Technique to Determine the Power Spectrum from Cosmic Microwave Background Sky Maps
• Comparing Cosmic Microwave Background Datasets

Cited by in corpus (15)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
• The Microwave Anisotropy Probe (MAP) Mission
• The CMB power spectrum out to l=1400 measured by the VSA
• The Optical Design and Characterization of the Microwave Anisotropy Probe
• Binned Cosmic Microwave Background Anisotropy Power Spectra: Peak Location
• Characterizing the Peak in the CMB Angular Power Spectrum
• Bayesian `Hyper-Parameters' Approach to Joint Estimation: The Hubble Constant from CMB Measurements
• The QMAP and MAT/TOCO Experiments for Measuring Anisotropy in the Cosmic Microwave Background
• Analysis of cosmic microwave background data on an incomplete sky
• Harmonic analysis of cosmic microwave background data II: from ring-sets to the sky
• Cosmic Microwave Background Anisotropy Measurement From Python V
• A measurement at the first acoustic peak of the CMB with the 33 GHz interferometer
• Testing CMB polarization data using position angles
• Testing the CMB Data for Systematic Effects