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The White Mountain Polarimeter Telescope and an Upper Limit on CMB Polarization
Alan R. Levy, Rodrigo Leonardi, Markus Ansmann +18
The White Mountain Polarimeter (WMPol) is a dedicated ground-based microwave telescope and receiver system for observing polarization of the Cosmic Microwave Background. WMPol is l…
The 2.3 GHz continuum survey of the GEM project
C. Tello, T. Villela, S. Torres +11
We present a partial-sky survey of the radio continuum at 2.3 GHz within the scope of the Galactic Emission Mapping (GEM) project, an observational program conceived and developed…
The Cosmic Foreground Explorer (COFE): A balloon-borne microwave polarimeter to characterize polarized foregrounds
Rodrigo Leonardi, Brian Williams, Marco Bersanelli +8
The COsmic Foreground Explorer (COFE) is a balloon-borne microwave polarime- ter designed to measure the low-frequency and low-l characteristics of dominant diffuse polarized foreg…
Angular power spectrum of the FastICA CMB component from BEAST data
S. Donzelli, D. Maino, M. Bersanelli +9
We present the angular power spectrum of the CMB component extracted with FastICA from the Background Emission Anisotropy Scanning Telescope (BEAST) data. BEAST is a 2.2 meter off-…
Galactic foreground contribution to the BEAST CMB Anisotropy Maps
Jorge Mejía, Marco Bersanelli, Carlo Burigana +17
We report limits on the Galactic foreground emission contribution to the Background Emission Anisotropy Scanning Telescope (BEAST) Ka- and Q-band CMB anisotropy maps. We estimate t…
Imaging the first light: experimental challenges and future perspectives in the observation of the Cosmic Microwave Background Anisotropy
A. Mennella, C. Baccigalupi, A. Balbi +17
Measurements of the cosmic microwave background (CMB) allow high precision observation of the Last Scattering Surface at redshift 1100. After the success of the NASA satelli…
The CMB Power Spectrum from the Background Emission Anisotropy Scanning Telescope (BEAST) Experiment
Ian J. O'Dwyer, Marco Bersanelli, Jeffrey Childers +19
The Background Emission Anisotropy Scanning Telescope (BEAST) is a 2.2m off-axis telescope with an 8 element mixed Q (38-45GHz) and Ka (26-36GHz) band focal plane, designed for bal…
Current Status and Perspectives of Cosmic Microwave Background Observations
Marco Bersanelli, Davide Maino, Aniello Mennella
Measurements of the cosmic microwave background (CMB) radiation provide a unique opportunity for a direct study of the primordial cosmic plasma at redshift z ~1000. The angular pow…
The Low Frequency Instrument in the ESA Planck mission
A. Mennella, M. Bersanelli, B. Cappellini +8
Measurements of the cosmic microwave background (CMB) allow high precision observation of the cosmic plasma at redshift z~1100. After the success of the NASA satellite COBE, that i…
Optimized in-flight absolute calibration for extended CMB surveys
B. Cappellini, D. Maino, G. Albetti +4
Accurate measurements of the Cosmic Microwave Background (CMB) anisotropy call for high precision and reliability of the in-flight calibration. For extended surveys the CMB dipole…
Offset balancing in pseudo-correlation radiometers for CMB measurements
Aniello Mennella, Marco Bersanelli, Michael Seiffert +4
Radiometeric CMB measurements need to be highly stable and this stability is best obtained with differential receivers. The residual 1/f noise in the differential output is strongl…
High Performances Corrugated Feed Horns for Space Applications at Millimetre Wavelengths
F. Villa, M. Sandri, N. Mandolesi +11
We report on the design, fabrication and testing of a set of high performance corrugated feed horns at 30 GHz, 70 GHz and 100 GHz, built as advanced prototypes for the Low Frequenc…
Advanced pseudo-correlation radiometers for the Planck-LFI instrument
A. Mennella, M. Bersanelli, R. C. Butler +34
The LFI (Low Frequency Instrument) on board the ESA Planck satellite is constituted by an array of radiometric detectors actively cooled at 20 K in the 30-70 GHz frequency range in…
Trade-off between angular resolution and straylight contamination in CMB anisotropy experiments. I. Pattern simulations
M. Sandri, F. Villa, R. Nesti +3
The study of Cosmic Microwave Background (CMB) anisotropies represents one of the most powerful Cosmological tools. After the great success of the two NASA's satellite missions COB…
Planck Low Frequency Instrument: Beam Patterns
M. Sandri, M. Bersanelli, C. Burigana +8
The Low Frequency Instrument on board the ESA Planck satellite is coupled to the Planck 1.5 meter off-axis dual reflector telescope by an array of 27 corrugated feed horns operatin…
Advanced simulation techniques for straylight prediction of high performance mm-wave reflecting telescope
M. Sandri, F. Villa, M. Bersanelli +3
The prediction of the antenna radiation pattern can be extremely complex for antenna system composed of several reflector surfaces. Typically, at mm-wavelengths, telescopes are com…
PLANCK/LFI: an Advanced Multi-beam High Performance mm-wave Optics for Space Applications
F. Villa, M. Sandri, M. Bersanelli +5
The Low Frequency Instrument (LFI) is one of the two instruments onboard the ESA PLANCK satellite foreseen to be launched in 2007. The LFI will image the Cosmic Microwave Backgroun…
The effect of signal digitisation in CMB experiments
M. Maris, D. Maino, C. Burigana +3
Signal digitisation may produce significant effects in balloon - borne or space CMB experiments, since the limited bandwidth for downlink of data requires imposes a large quantisat…
Trade-off between angular resolution and straylight contamination in CMB anisotropy experiments. II. Straylight evaluation
C. Burigana, M. Sandri, F. Villa +5
Satellite CMB anisotropy missions and new generation of balloon-borne and ground experiments, make use of complex multi-frequency instruments at the focus of a meter class telescop…
A Map of the Cosmic Microwave Background from the BEAST Experiment
Peter R. Meinhold, Marco Bersanelli, Jeffrey Childers +24
We present the first sky maps from the BEAST (Background Emission Anisotropy Scanning Telescope) experiment. BEAST consists of a 2.2 meter off axis Gregorian telescope fed by a cry…
Full Sky Study of Diffuse Galactic Emission at Decimeter Wavelengths
P. Platania, C. Burigana, D. Maino +4
A detailed knowledge of the Galactic radio continuum is of high interest for studies of the dynamics and structure of the Galaxy as well as for the problem of foreground removal in…
A radio catalog of Galactic HII regions for applications from decimeter to millimeter wavelengths
R. Paladini, C. Burigana, R. D. Davies +5
By collecting the information from 24 previously published lists and catalogs, we produce a comprehensive catalog (Master Catalog) of 1442 Galactic HII regions. For each object, we…
Anisotropies of the Cosmic Microwave Background
M. Bersanelli, D. Maino, A. Mennella
We review the present status of Cosmic Microwave Background (CMB) anisotropy observations and discuss the main related astrophysical issues, instrumental effects and data analysis…
1/f noise and other systematic effects in the Planck-LFI radiometers
Michael Seiffert, Aniello Mennella, Carlo Burigana +4
We use an analytic approach to study the susceptibility of the Planck Low Frequency Instrument radiometers to various systematic effects. We examine the effects of fluctuations in…