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We have mapped four regions of the southern Galactic plane at 31 GHz with the Cosmic Background Imager. From the maps, we have extracted the flux densities for six of the brightest \hii regions in the southern sky and compared them with…

We derive the angular power spectra of intensity and polarization of Galactic synchrotron emission in the range 36 < l < 10^3 from the Parkes survey mapping the southern Galactic plane at 2.4 GHz. The polarization spectra of both electric…

Astrophysics · Physics 2009-10-31 M. Tucci , E. Carretti , S. Cecchini , R. Fabbri , M. Orsini , E. Pierpaoli

This study aims to characterise the polarized foreground emission in the ELAIS-N1 field and to address its possible implications for the extraction of the cosmological 21-cm signal from the Low-Frequency Array - Epoch of Reionization…

Astrophysics of Galaxies · Physics 2014-09-05 V. Jelic , A. G. de Bruyn , M. Mevius , F. B. Abdalla , K. M. B. Asad , G. Bernardi , M. A. Brentjens , S. Bus , E. Chapman , B. Ciardi , S. Daiboo , E. R. Fernandez , A. Ghosh , G. Harker , H. Jensen , S. Kazemi , L. V. E. Koopmans , P. Labropoulos , O. Martinez-Rubi , G. Mellema , A. R. Offringa , V. N. Pandey , A. H. Patil , R. M. Thomas , H. K. Vedantham , V. Veligatla , S. Yatawatta , S. Zaroubi , A. Alexov , J. Anderson , I. M. Avruch , R. Beck , M. E. Bell , M. J. Bentum , P. Best , A. Bonafede , J. Bregman , F. Breitling , J. Broderick , W. N. Brouw , M. Bruggen , H. R. Butcher , J. E. Conway , F. de Gasperin , E. de Geus , A. Deller , R. -J. Dettmar , S. Duscha , J. Eisloffel , D. Engels , H. Falcke , R. A. Fallows , R. Fender , C. Ferrari , W. Frieswijk , M. A. Garrett , J. Griessmeier , A. W. Gunst , J. P. Hamaker , T. E. Hassall , M. Haverkorn , G. Heald , J. W. T. Hessels , M. Hoeft , J. Horandel , A. Horneffer , A. van der Horst , M. Iacobelli , E. Juette , A. Karastergiou , V. I. Kondratiev , M. Kramer , M. Kuniyoshi , G. Kuper , J. van Leeuwen , P. Maat , G. Mann , D. McKay-Bukowski , J. P. McKean , H. Munk , A. Nelles , M. J. Norden , H. Paas , M. Pandey-Pommier , G. Pietka , R. Pizzo , A. G. Polatidis , W. Reich , H. Rottgering , A. Rowlinson , A. M. M. Scaife , D. Schwarz , M. Serylak , O. Smirnov , M. Steinmetz , A. Stewart , M. Tagger , Y. Tang , C. Tasse , S. ter Veen , S. Thoudam , C. Toribio , R. Vermeulen , C. Vocks , R. J. van Weeren , R. A. M. J. Wijers , S. J. Wijnholds , O. Wucknitz , P. Zarka

The polarized thermal emission from Galactic dust is the main foreground present in measurements of the polarization of the cosmic microwave background (CMB) at frequencies above 100GHz. We exploit the Planck HFI polarization data from 100…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-10 Planck Collaboration , R. Adam , P. A. R. Ade , N. Aghanim , M. Arnaud , J. Aumont , C. Baccigalupi , A. J. Banday , R. B. Barreiro , J. G. Bartlett , N. Bartolo , E. Battaner , K. Benabed , A. Benoit-Lévy , J. -P. Bernard , M. Bersanelli , P. Bielewicz , A. Bonaldi , L. Bonavera , J. R. Bond , J. Borrill , F. R. Bouchet , F. Boulanger , A. Bracco , M. Bucher , C. Burigana , R. C. Butler , E. Calabrese , J. -F. Cardoso , A. Catalano , A. Challinor , A. Chamballu , R. -R. Chary , H. C. Chiang , P. R. Christensen , D. L. Clements , S. Colombi , L. P. L. Colombo , C. Combet , F. Couchot , A. Coulais , B. P. Crill , A. Curto , F. Cuttaia , L. Danese , R. D. Davies , R. J. Davis , P. de Bernardis , G. de Zotti , J. Delabrouille , J. -M. Delouis , F. -X. Désert , C. Dickinson , J. M. Diego , K. Dolag , H. Dole , S. Donzelli , O. Doré , M. Douspis , A. Ducout , J. Dunkley , X. Dupac , G. Efstathiou , F. Elsner , T. A. Enßlin , H. K. Eriksen , E. Falgarone , F. Finelli , O. Forni , M. Frailis , A. A. Fraisse , E. Franceschi , A. Frejsel , S. Galeotta , S. Galli , K. Ganga , T. Ghosh , M. Giard , Y. Giraud-Héraud , E. Gjerløw , J. González-Nuevo , K. M. Górski , S. Gratton , A. Gregorio , A. Gruppuso , V. Guillet , F. K. Hansen , D. Hanson , D. L. Harrison , G. Helou , S. Henrot-Versillé , C. Hernández-Monteagudo , D. Herranz , E. Hivon , M. Hobson , W. A. Holmes , K. M. Huffenberger , G. Hurier , A. H. Jaffe , T. R. Jaffe , J. Jewell , W. C. Jones , M. Juvela , E. Keihänen , R. Keskitalo , T. S. Kisner , R. Kneissl , J. Knoche , L. Knox , N. Krachmalnicoff , M. Kunz , H. Kurki-Suonio , G. Lagache , J. -M. Lamarre , A. Lasenby , M. Lattanzi , C. R. Lawrence , J. P. Leahy , R. Leonardi , J. Lesgourgues , F. Levrier , M. Liguori , P. B. Lilje , M. Linden-Vørnle , M. López-Caniego , P. M. Lubin , J. F. Macías-Pérez , B. Maffei , D. Maino , N. Mandolesi , A. Mangilli , M. Maris , P. G. Martin , E. Martínez-González , S. Masi , S. Matarrese , P. Mazzotta , A. Melchiorri , L. Mendes , A. Mennella , M. Migliaccio , S. Mitra , M. -A. Miville-Deschênes , A. Moneti , L. Montier , G. Morgante , D. Mortlock , A. Moss , D. Munshi , J. A. Murphy , P. Naselsky , F. Nati , P. Natoli , C. B. Netterfield , H. U. Nørgaard-Nielsen , F. Noviello , D. Novikov , I. Novikov , L. Pagano , F. Pajot , R. Paladini , D. Paoletti , B. Partridge , F. Pasian , G. Patanchon , T. J. Pearson , O. Perdereau , L. Perotto , F. Perrotta , V. Pettorino , F. Piacentini , M. Piat , E. Pierpaoli , D. Pietrobon , S. Plaszczynski , E. Pointecouteau , G. Polenta , N. Ponthieu , L. Popa , G. W. Pratt , S. Prunet , J. -L. Puget , J. P. Rachen , W. T. Reach , R. Rebolo , M. Remazeilles , C. Renault , A. Renzi , S. Ricciardi , I. Ristorcelli , G. Rocha , C. Rosset , M. Rossetti , G. Roudier , B. Rouillé d'Orfeuil , J. A. Rubiño-Martín , B. Rusholme , M. Sandri , D. Santos , M. Savelainen , G. Savini , D. Scott , J. D. Soler , L. D. Spencer , V. Stolyarov , R. Stompor , R. Sudiwala , R. Sunyaev , D. Sutton , A. -S. Suur-Uski , J. -F. Sygnet , J. A. Tauber , L. Terenzi , L. Toffolatti , M. Tomasi , M. Tristram , M. Tucci , J. Tuovinen , L. Valenziano , J. Valiviita , B. Van Tent , L. Vibert , P. Vielva , F. Villa , L. A. Wade , B. D. Wandelt , R. Watson , I. K. Wehus , M. White , S. D. M. White , D. Yvon , A. Zacchei , A. Zonca

Aims: Contamination from bright diffuse Galactic thermal and non-thermal radio emission poses crucial challenges in experiments aiming to measure the 21-cm signal of neutral hydrogen from the Cosmic Dawn and Epoch of Reionization. If not…

Instrumentation and Methods for Astrophysics · Physics 2022-06-29 B. K. Gehlot , L. V. E. Koopmans , A. R. Offringa , H. Gan , R. Ghara , S. K. Giri , M. Kuiack , F. G. Mertens , M. Mevius , R. Mondal , V. N. Pandey , A. Shulevski , R. A. M. J. Wijers , S. Yatawatta

We present 3D models of the Galactic magnetic field including regular and turbulent components, and of the distribution of matter in the Galaxy including relativistic electrons and dust grains. By integrating along the line of sight, we…

Astrophysics of Galaxies · Physics 2013-03-26 L. Fauvet , J. F. Macías-Pérez , F. X. Désert

The Galactic interstellar medium hosts a significant magnetic field, which can be probed through the synchrotron emission produced from its interaction with relativistic electrons. Linearly polarized synchrotron emission is generated…

We present the detection and characterization of fluctuations in linearly polarized emission from the atmosphere above the South Pole. These measurements make use of data from the SPT-3G receiver on the South Pole Telescope in three…

We present new measurements of the cosmic microwave background (CMB) polarization from the final season of the Cosmic Anisotropy Polarization MAPper (CAPMAP). The data set was obtained in winter 2004-2005 with the 7 m antenna in Crawford…

Measurements of the Galactic synchrotron emission is relevant for the 21-cm studies from the Epoch of Reionization. The study of the synchrotron emission is also useful to quantify the fluctuations in the magnetic field and the cosmic ray…

Cosmology and Nongalactic Astrophysics · Physics 2021-01-13 Samir Choudhuri , Abhik Ghosh , Nirupam Roy , Somnath Bharadwaj , Huib. T. Intema , Sk. Saiyad Ali

The Galactic synchrotron emission is expected to be the most relevant source of astrophysical contamination in cosmic microwave background polarization measurements, at least at frequencies < 100 GHz and at angular scales > 30'. We present…

Astrophysics · Physics 2009-11-11 Laura La Porta , Carlo Burigana

We report on sensitive 21cm and 11cm polarization surveys of the Galactic plane carried out with the Effelsberg 100-m telescope at arcmin angular resolution and some related work. Highly structured polarized emission is seen along the…

Astrophysics · Physics 2014-10-13 W. Reich , E. Fuerst , P. Reich , R. Wielebinski , M. Wolleben

The B-modes of polarization at frequencies ranging from 50-1000 GHz are produced by Galactic dust, lensing of primordial E-modes in the cosmic microwave background (CMB) by intervening large scale structure, and possibly by primordial…

Cosmology and Nongalactic Astrophysics · Physics 2017-05-31 Jason Poh , Scott Dodelson

We present a new approach in modelling the polarized Galactic synchrotron emission in the microwave range (20-100 GHz), where this radiation is expected to play the leading role in contaminating the Cosmic Microwave Background (CMB) data.…

Astrophysics · Physics 2009-11-07 G. Bernardi , E. Carretti , R. Fabbri , C. Sbarra , S. Poppi , S. Cortiglioni

We study the polarisation properties of extragalactic sources at 95 and 150 GHz in the SPTpol 500 deg$^2$ survey. We estimate the polarised power by stacking maps at known source positions, and correct for noise bias by subtracting the mean…

We present observations with the new 11 GHz radiometer of the COSMOSOMAS experiment at the Teide Observatory (Tenerife). The sky region between 0 deg <= RA <= 360 deg and 26 deg <= DEC 49 deg (ca. 6500 square degrees) was observed with an…

We present tensor-to-scalar ratio forecasts for GreenPol, a hypothetical ground-based B-mode experiment aiming to survey the cleanest regions of the Northern Galactic Hemisphere at five frequencies between 10 and 44 GHz. Its primary science…

Cosmology and Nongalactic Astrophysics · Physics 2024-04-19 U. Fuskeland , A. Kaplan , I. K. Wehus , H. K. Eriksen , P. R. Christensen , S. von Hausegger , H. Liu , P. M. Lubin , P. R. Meinhold , P. Naselsky , H. Thommesen , A. Zonca