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The origin of magnetic fields in the Universe is an open problem in astrophysics and fundamental physics. Polarization observations with the forthcoming large radio telescopes will open a new era in the observation of magnetic fields and…

Current mm/submm interferometers, like the Atacama Large mm/submm Array (ALMA), use receivers that register the sky signal in a linear polarization basis. In the case of observations performed in full-polarization mode (where the…

天体物理仪器与方法 · 物理学 2016-09-21 I. Marti-Vidal , W. H. T. Vlemmings , S. Muller

Cosmic-ray air shower detection with the low-frequency part of the Square Kilometre Array (SKA) radio telescope is envisioned to yield very high precision measurements of the particle composition of cosmic rays between $10^{16}$ and…

高能天体物理现象 · 物理学 2025-06-24 A. Corstanje , S. Buitink , S. Bouma , M. Desmet , J. R. Hörandel , T. Huege , P. Laub , K. Mulrey , A. Nelles , O. Scholten , K. Terveer , S. Thoudam , K. Watanabe

Deep surveys with the SKA1-MID array offer for the first time the opportunity to systematically explore the polarization properties of the microJy source population. Our knowledge of the polarized sky approaching these levels is still very…

Modern radio interferometers enable high-resolution polarization imaging, offering insights into cosmic magnetism through Rotation Measure (RM) synthesis. Traditional 2+1D RM synthesis treats the 2D spatial and 1D spectral transforms…

天体物理仪器与方法 · 物理学 2025-08-27 Victor Gustafsson , Marcus Brüggen , Cyril Tasse , Torsten Enßlin , Shane O'Sullivan , Francesco de Gasperin

We present the third data release of the LOFAR Two-metre Sky Survey (LoTSS-DR3). The survey images cover 88% of the northern sky and were created from 12,950 hrs of data (18.6 PB) accumulated over 10.5 years. The images were produced…

星系天体物理 · 物理学 2026-02-19 T. W. Shimwell , M. J. Hardcastle , C. Tasse , A. Drabent , A. Botteon , W. L. Williams , P. N. Best , H. J. A. Röttgering , M. Brüggen , G. Brunetti , J. R. Callingham , K. T. Chyży , J. E. Conway , F. De Gasperin , M. Haverkorn , C. Horellou , N. Jackson , G. K. Miley , L. K. Morabito , R. Morganti , S. P. O'Sullivan , D. J. Schwarz , D. J. B. Smith , R. J. van Weeren , H. K. Vedantham , G. J. White , A. Ahmadi , L. Alegre , M. Arias , B. Asabere , B. Bahr-Kalus , B. Barkus , M. Bilicki , L. Böhme , M. Brentjens , M. Brienza , D. J. Bomans , A. Bonafede , M. Bonato , E. Bonnassieux , J. M. Boxelaar , S. Camera , R. Cassano , J. Chilufya , M. Cianfaglione , J. H. Croston , V. Cuciti , P. Dabhade , E. De Rubeis , J. M. G. H. J. de Jong , D. Dallacasa , R. J. Dettmar , K. J. Duncan , G. Di Gennaro , H. W. Edler , C. Groeneveld , G. Gürkan , M. Hajduk , C. L. Hale , V. Heesen , D. N. Hoang , M. Hoeft , H. Holties , M. A. Horton , M. Iacobelli , M. Jamrozy , M. J. Jarvis , V. Jelic , M. Kadler , R. Kondapally , M. Kunert-Bajraszewska , M. Loose , M. Magliocchetti , K. Małek , C. Manzano , J. P. McKean , M. Mevius , B. Mingo , A. Miskolczi , A. Misra , J. Moldón , D. G. Nair , S. J. Nakoneczny , E. Orru , M. Pashapour-Ahmadabadi , T. Pasini , J. Petley , J. C. S. Pierce , I. Prandoni , D. Rafferty , K. Rajpurohit , C. J. Riseley , I. D. Roberts , S. Sethi , A. Shulevski , M. Stein , C. Stuardi , F. Sweijen , S. ter Veen , R. Timmerman , M. Vaccari , S. Wijnholds

The Australian SKA Pathfinder (ASKAP) radio telescope has carried out a survey of the entire Southern Sky at 887.5MHz. The wide area, high angular resolution, and broad bandwidth provided by the low-band Rapid ASKAP Continuum Survey…

Faraday Rotation Measure (RM) Synthesis, as a method for analyzing multi-channel observations of polarized radio emission to investigate galactic magnetic fields structures, requires the definition of complex polarized intensity in the…

星系天体物理 · 物理学 2015-05-14 P. Frick , D. Sokoloff , R. Stepanov , R. Beck

The LOFAR Two-metre Sky Survey (LoTSS) will map the complete Northern sky and provide an excellent opportunity to study the distribution and evolution of the large-scale structure of the Universe. We study the completeness of the LoTSS…

We determined Faraday rotation measures (RMs) towards 137 pulsars in the northern sky, using Low-Frequency Array (LOFAR) observations at 110-190 MHz. This low-frequency RM catalogue, the largest to date, improves the precision of existing…

The aimed high sensitivities and large fields of view of the new generation of interferometers impose to reach high dynamic range of order $\sim$1:$10^6$ to 1:$10^8$ in the case of the Square Kilometer Array. The main problem is the…

天体物理仪器与方法 · 物理学 2015-06-12 C. Tasse , B. van der Tol , J. van Zwieten , Ger van Diepen , S. Bhatnagar

New-generation radio telescopes like LOFAR are conducting extensive sky surveys, detecting millions of sources. To maximise the scientific value of these surveys, radio source components must be properly associated into physical sources…

We present deep polarimetric observations of the European Large Area ISO Survey-North 1 (ELAIS-N1) field using the Low Frequency Array (LOFAR) at 114.9-177.4 MHz. The ELAIS-N1 field is part of the LOFAR Two-metre Sky Survey deep fields data…

We present broadband polarimetric observations of a sample of high Faraday rotation measure (RM) AGN using the VLA telescope from 1 to 2 GHz, and 4 to 12 GHz. The sample (14 sources) consists of compact sources (linear resolution smaller…

Detection of the redshifted 21-cm signal of neutral hydrogen from the Cosmic Dawn and the Epoch of Reionization is one of the final frontiers of modern observational cosmology. The inherently faint signal makes it susceptible to…

We present the final 6'' resolution data release of the ELAIS-N1 field from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey Deep Fields project (LoTSS Deep). The 144MHz images are the most sensitive achieved to date at this frequency…

Deep polarization surveys at low radio frequencies are key to cosmic magnetism studies: Larger catalogs of polarized extragalactic sources and increased precision on Faraday rotation measures (RMs) make it possible to probe the…

Faraday rotation measurements using the current and next generation of low-frequency radio telescopes will provide a powerful probe of astronomical magnetic fields. However, achieving the full potential of these measurements requires…

We present the Multifrequency Snapshot Sky Survey (MSSS), the first northern-sky LOFAR imaging survey. In this introductory paper, we first describe in detail the motivation and design of the survey. Compared to previous radio surveys, MSSS…

天体物理仪器与方法 · 物理学 2015-11-04 G. H. Heald , R. F. Pizzo , E. Orrú , R. P. Breton , D. Carbone , C. Ferrari , M. J. Hardcastle , W. Jurusik , G. Macario , D. Mulcahy , D. Rafferty , A. Asgekar , M. Brentjens , R. A. Fallows , W. Frieswijk , M. C. Toribio , B. Adebahr , M. Arts , M. R. Bell , A. Bonafede , J. Bray , J. Broderick , T. Cantwell , P. Carroll , Y. Cendes , A. O. Clarke , J. Croston , S. Daiboo , F. de Gasperin , J. Gregson , J. Harwood , T. Hassall , V. Heesen , A. Horneffer , A. J. van der Horst , M. Iacobelli , V. Jelić , D. Jones , D. Kant , G. Kokotanekov , P. Martin , J. P. McKean , L. K. Morabito , B. Nikiel-Wroczyński , A. Offringa , V. N. Pandey , M. Pandey-Pommier , M. Pietka , L. Pratley , C. Riseley , A. Rowlinson , J. Sabater , A. M. M. Scaife , L. H. A. Scheers , K. Sendlinger , A. Shulevski , M. Sipior , C. Sobey , A. J. Stewart , A. Stroe , J. Swinbank , C. Tasse , J. Trüstedt , E. Varenius , S. van Velzen , N. Vilchez , R. J. van Weeren , S. Wijnholds , W. L. Williams , A. G. de Bruyn , R. Nijboer , M. Wise , A. Alexov , J. Anderson , I. M. Avruch , R. Beck , M. E. Bell , I. van Bemmel , M. J. Bentum , G. Bernardi , P. Best , F. Breitling , W. N. Brouw , M. Brüggen , H. R. Butcher , B. Ciardi , J. E. Conway , E. de Geus , A. de Jong , M. de Vos , A. Deller , R. J. Dettmar , S. Duscha , J. Eislöffel , D. Engels , H. Falcke , R. Fender , M. A. Garrett , J. Grießmeier , A. W. Gunst , J. P. Hamaker , J. W. T. Hessels , M. Hoeft , J. Hörandel , H. A. Holties , H. Intema , N. J. Jackson , E. Jütte , A. Karastergiou , W. F. A. Klijn , V. I. Kondratiev , L. V. E. Koopmans , M. Kuniyoshi , G. Kuper , C. Law , J. van Leeuwen , M. Loose , P. Maat , S. Markoff , R. McFadden , D. McKay-Bukowski , M. Mevius , J. C. A. Miller-Jones , R. Morganti , H. Munk , A. Nelles , J. E. Noordam , M. J. Norden , H. Paas , A. G. Polatidis , W. Reich , A. Renting , H. Röttgering , A. Schoenmakers , D. Schwarz , J. Sluman , O. Smirnov , B. W. Stappers , M. Steinmetz , M. Tagger , Y. Tang , S. ter Veen , S. Thoudam , R. Vermeulen , C. Vocks , C. Vogt , R. A. M. J. Wijers , O. Wucknitz , S. Yatawatta , P. Zarka