The QMAP and MAT/TOCO Experiments for Measuring Anisotropy in the Cosmic Microwave Background

  title={The QMAP and MAT/TOCO Experiments for Measuring Anisotropy in the Cosmic Microwave Background},
  author={A. D. Miller and Joseph N. Beach and Stuart Bradley and Robert R. Caldwell and H. Chapman and Mark J. Devlin and W. B. Dorwart and Thomas Herbig and D. Jones and Glen Pickslay Monnelly and Calvin Barth Netterfield and Michael R. Nolta and Lyman A. Page and Jason L. Puchalla and Tony Robertson and E. B. Torbet and Huan T. Tran and William E. Vinje},
  journal={The Astrophysical Journal Supplement Series},
  pages={115 - 141}
We describe two related experiments that measured the anisotropy in the cosmic microwave background (CMB). QMAP was a balloon-borne telescope that flew twice in 1996, collecting data on degree angular scales with an array of six high electron mobility transistor-based amplifiers (HEMTs). QMAP used an interlocking scan strategy to directly produce high signal-to-noise ratio CMB maps over a limited region of sky. The QMAP gondola was then refitted for ground-based work as the MAT/TOCO experiment… 
A 145-GHz Interferometer for Measuring the Anisotropy of the Cosmic Microwave Background
This thesis presents the design, construction, testing, and preliminary data analysis of MINT, the Millimeter INTerferometer. MINT is a 145-GHz, four-element interferometer designed to measure the
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Beam Profiles and Window Functions
Knowledge of the beam profiles is of critical importance for interpreting data from cosmic microwave background experiments. In this paper, we present the characterization of the in-flight optical
We report on the design, first observing season, and analysis of data from a new prototype millimeter-wave interferometer, MINT. MINT consists of four 145 GHz SIS mixers operating in double-sideband
Detector Characterization, Optimization, and Operation for ACTPol
Measurements of the temperature anisotropies of the Cosmic Microwave Background (CMB) have provided the foundation for much of our current knowledge of cosmology. Observations of the polarization of
Modeling, Systems Engineering, and Project Management for Astronomy IV
The Cosmic Microwave Background (CMB) is a relict of the early universe. Its perfect 2.725K blackbody spectrum demonstrates that the universe underwent a hot, ionized early phase; its anisotropy
Planck2018 results
We present full-sky maps of the cosmic microwave background (CMB) and polarized synchrotron and thermal dust emission, derived from the third set ofPlanckfrequency maps. These products have
Large Millimeter Bolometric Arrays on ACT for Cosmic Microwave Background Observations
Two upgraded cameras on the Atacama Cosmology Telescope (ACT), the ACT Polarimeter (ACTPol) and the Advanced ACTPol, have made and will make measurements of the temperature and polarization in the
Measurement of Arcminute-Scale Cosmic Microwave Background Anisotropy with the Berkeley-Illinois-Maryland Association Array
We report the results of our continued study of arcminute-scale anisotropy in the cosmic microwave background (CMB) with the Berkeley-Illinois-Maryland Association array. The survey consists of 10
Studying the Cosmic Microwave Background with Spider’s First Flight
Gravitational waves are a prediction of many early Universe models. These waves generate a divergence-free polarization component, called B-modes, of the cosmic microwave background (CMB). Spider is


A Spin-Modulated Telescope to Make Two-Dimensional Cosmic Microwave Background Maps
We describe the HEMT Advanced Cosmic Microwave Explorer (HACME), a balloon-borne experiment designed to measure subdegree-scale cosmic microwave background anisotropy over hundreds of deg2, using a
Anisotropy in the Microwave Sky: Results from the First Flight of the Balloon-borne Anisotropy Measurement (BAM)
Results are reported from the first flight of a new balloon-borne instrument, BAM (Balloon-borne Anisotropy Measurement), designed to search for cosmic microwave background (CMB) anisotropy. The
Anisotropy in the Cosmic Microwave Background at Degree Angular Scales: Python V Results
Observations of the microwave sky using the Python telescope in its fifth season of operation at the Amundsen-Scott South Pole Station in Antarctica are presented. The system consists of a 0.75 m
A Measurement of Anisotropy in the Cosmic Microwave Background on 7'–22' Scales
We report a measurement of anisotropy in the cosmic microwave background radiation (CMBR) on 7'–22' scales. Observations of 36 fields near the North Celestial Pole (NCP) were made at 31.7 and 14.5
Degree-Scale Anisotropy in the Cosmic Microwave Background: SP94 Results
We present results from two observations of the cosmic microwave background (CMB) performed from the South Pole during the 1993-1994 austral summer. Each observation employed a 3 deg peak-to-peak
Millimetric Ground-Based Observation of Cosmic Microwave Background Radiation Anisotropy at δ = +28°
Results from the third campaign of a ground-based multiband observation of the millimeter emission of the sky from Tenerife (Canary Islands) are presented. The instrument consists of a 0.45 m
A High Spatial Resolution Analysis of the MAXIMA-1 Cosmic Microwave Background Anisotropy Data
We extend the analysis of the MAXIMA-1 cosmic microwave background data to smaller angular scales. MAXIMA, a bolometric balloon-borne experiment, mapped a 124 deg2 region of the sky with 10'
Mapping the CMB II: the second flight of the QMAP experiment
We report the results from the second flight of QMAP, an experiment to map the cosmic microwave background near the North Celestial Pole. We present maps of the sky at 31 and 42 GHz as well as a
Galactic Microwave Emission at Degree Angular Scales
We cross-correlate the Saskatoon Ka- and Q-band cosmic microwave background (CMB) data with different maps to quantify possible foreground contamination. We detect a marginal correlation (≳2 σ) with
The Spectrum of the Cosmic Microwave Background Anisotropy from the Combined COBE FIRAS and WMAP Observations
The cosmic microwave background (CMB) anisotropy data from the COBE Far Infrared Absolute Spectrophotometer (FIRAS) is reanalyzed in light of the Wilkinson Microwave Anisotropy Probe (WMAP)