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We report on broad instantaneous bandwidth microwave spectrum analysis with hot $^{87}\mathrm{Rb}$ atoms in a microfabricated vapor cell in a large magnetic field gradient. The sensor is a MEMS atomic vapor cell filled with isotopically…

Atomic Physics · Physics 2024-08-13 Yongqi Shi , Thomas Ruster , Melvyn Ho , Sylvain Karlen , Jacques Haesler , Philipp Treutlein

We present the result from a comprehensive laboratory and on-sky characterization of the commercial spectrograph system consisting of a PIXIS 1300BX charge-coupled device (CCD) camera and an IsoPlane 320A spectrograph as part of the…

Instrumentation and Methods for Astrophysics · Physics 2026-03-10 Jiwon Jang , Changsu Choi , Ho Seong Hwang , Haeun Chung , Hyeonguk Bahk , Dongkok Kim , Jae-Woo Kim

Precise measurements of the cosmic microwave background (CMB) are crucial in cosmology, because any proposed model of the universe must account for the features of this radiation. Of all CMB measurements that the scientific community has…

Instrumentation and Methods for Astrophysics · Physics 2013-07-08 Claudia Nones , Stefanos Marnieros , Alain Benoit , Laurent Bergé , Aurelien Bideau , Philippe Camus , Louis Dumoulin , Alessandro Monfardini , Olivier Rigaut

A vectorial analysis of magnetic resonance spectrometers, based on traveling wave resonators and including the reference arm and the automatic control of frequency, has been developed. The proposed model, valid also for stationary wave…

Instrumentation and Detectors · Physics 2015-06-26 G. Annino , M. Cassettari , M. Fittipaldi , M. Martinelli

We have developed a bolometric detector that is intrinsically sensitive to linear polarization which is optimized for making measurements of the polarization of the cosmic microwave background radiation. The receiver consists of a pair of…

Astrophysics · Physics 2020-12-22 W. C. Jones , R. S. Bhatia , J. J. Bock , A. E. Lange

This paper presents the results of a study of the response of a test CMOS sensor with a radiation tolerant pixel cell design to 80 keV and 100 keV electrons. The point spread function is measured to be (13.0+/- 1.7) microns at 100 keV and…

Instrumentation and Detectors · Physics 2009-06-25 Marco Battaglia , Devis Contarato , Peter Denes , Dionisio Doering , Velimir Radmilovic

Spider is a balloon-borne array of six telescopes that will observe the Cosmic Microwave Background. The 2400 antenna-coupled bolometers in the instrument will make a polarization map of the CMB with ~degree resolution at 150 GHz and 95…

Instrumentation and Methods for Astrophysics · Physics 2014-02-12 Sean Bryan

We report an improved measurement of the cosmic microwave background (CMB) $B$-mode polarization power spectrum with the POLARBEAR experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to…

We give an overview of the Grism Lens Amplified Survey from Space (GLASS), a large Hubble Space Telescope program aimed at obtaining grism spectroscopy of the fields of ten massive clusters of galaxies at redshift z=0.308-0.686, including…

We describe the design and performance of a microwave polarimeter used to make precision measurements of polarized astrophysical radiation in three microwave frequency bands spanning 26-36 GHz. The instrument uses cooled HEMT amplifiers in…

We point out that polarization measurements as planned for the upcoming PLANCK mission can significantly enhance the accuracy of cosmic parameter estimation compared to the temperature anisotropy spectrum alone. In order to illustrate this,…

Astrophysics · Physics 2007-05-23 Pavel Naselsky , Jens Schmalzing , Jesper Sommer-Larsen , Steen Hannested

We present a technique for measuring the transverse spatial properties of an optical wavefront. Intensity and phase profiles are recovered by analysis of a series of interference patterns produced by the combination of a scanning X-shaped…

Optics · Physics 2015-06-15 David T. Lloyd , Kevin O'Keeffe , Simon M. Hooker

The Low Frequency Instrument (LFI) of the "Planck Surveyor" ESA mission will perform high-resolution imaging of the Cosmic Microwave Background anisotropies at four frequencies in the 30-100 GHz range. We review the LFI main scientific…

Astrophysics · Physics 2019-08-14 N. Mandolesi , M. Bersanelli , C. Burigana , F. Villa

[Abridged] The measurement of the polarization of the Cosmic Microwave Background radiation is one of the current frontiers in cosmology. In particular, the detection of the primordial B-modes, could reveal the presence of gravitational…

Instrumentation and Methods for Astrophysics · Physics 2021-08-10 The LSPE collaboration , G. Addamo , P. A. R. Ade , C. Baccigalupi , A. M. Baldini , P. M. Battaglia , E. S. Battistelli , A. Baù , P. de Bernardis , M. Bersanelli , M. Biasotti , A. Boscaleri , B. Caccianiga , S. Caprioli , F. Cavaliere , F. Cei , K. A. Cleary , F. Columbro , G. Coppi , A. Coppolecchia , F. Cuttaia , G. D'Alessandro , G. De Gasperis , M. De Petris , V. Fafone , F. Farsian , L. Ferrari Barusso , F. Fontanelli , C. Franceschet , T. C. Gaier , L. Galli , F. Gatti , R. Genova-Santos , M. Gerbino , M. Gervasi , T. Ghigna , D. Grosso , A. Gruppuso , R. Gualtieri , F. Incardona , M. E. Jones , P. Kangaslahti , N. Krachmalnicoff , L. Lamagna , M. Lattanzi , C. H. López-Caraballo , M. Lumia , R. Mainini , D. Maino , S. Mandelli , M. Maris , S. Masi , S. Matarrese , A. May , L. Mele , P. Mena , A. Mennella , R. Molina , D. Molinari , G. Morgante , U. Natale , F. Nati , P. Natoli , L. Pagano , A. Paiella , F. Panico , F. Paonessa , S. Paradiso , A. Passerini , M. Perez-de-Taoro , O. A. Peverini , F. Piacentini , L. Piccirillo , G. Pisano , D. Poletti , G. Presta , S. Realini , N. Reyes , J. A. Rubino-Martin , M. Sandri , S. Sartor , F. Pezzotta , G. Polenta , A. Rocchi , A. Schillaci , G. Signorelli , B. Siri , M. Soria , F. Spinella , V. Tapia , A. Tartari , A. C. Taylor , L. Terenzi , M. Tomasi , E. Tommasi , C. Tucker , D. Vaccaro , D. M. Vigano , F. Villa , G. Virone , N. Vittorio , A. Volpe , R. E. J. Watkins , A. Zacchei , M. Zannoni

Fluctuations in the temperature of the cosmic microwave background have now been detected over a wide range of angular scales, and a consistent picture seems to be emerging. This article describes some of the implications for cosmology.…

Astrophysics · Physics 2009-10-28 Douglas Scott , Joe Silk , Martin White

We describe BOOMERANG; a balloon-borne microwave telescope designed to map the Cosmic Microwave Background (CMB) at a resolution of 10' from the Long Duration Balloon (LDB) platform. The millimeter-wave receiver employs new technology in…

The Cosmic Linear Anisotropy Solving System (CLASS) is a new accurate Boltzmann code, designed to offer a more user-friendly and flexible coding environment to cosmologists. CLASS is very structured, easy to modify, and offers a rigorous…

Instrumentation and Methods for Astrophysics · Physics 2011-05-17 Julien Lesgourgues

The CMB polarization is the Everest in the quest to characterize the earliest photons from the Universe. After a long list of ever-decreasing upper limits, a detection of polarization was made in 2002 by the DASI team at ell =~ 500. The…

Instrumentation and Methods for Astrophysics · Physics 2024-11-28 Denis Barkats