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We present the first section of a radio continuum and polarization survey at medium Galactic latitudes carried out with the Effelsberg 100-m telescope at 1.4 GHz. Four large fields have been observed, which all together cover an area of…

Astrophysics · Physics 2009-10-31 B. Uyaniker , E. Fuerst , W. Reich , P. Reich , R. Wielebinski

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…

Astrophysics of Galaxies · Physics 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

Following the detection of polarized diffuse Galactic emission in 1962 a number of surveys were undertaken at low frequencies in the following years resulting in important insights on the local magnetic field, polarization of the giant…

Astrophysics · Physics 2007-05-23 Wolfgang Reich

We present the first Faraday rotation measure (RM) grid study of an individual low-mass cluster -- the Fornax cluster -- which is presently undergoing a series of mergers. Exploiting commissioning data for the POlarisation Sky Survey of the…

Synchrotron emission, its polarization and its Faraday rotation at radio frequencies of 0.2-10 GHz are powerful tools to study the strength and structure of cosmic magnetic fields. The observational results are reviewed for spiral, barred…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Rainer Beck

We present preliminary results from mapping the high-latitude Galactic polarization with the Effelsberg Telescope at $\lambda$21 cm. Structures on the resulting maps are mostly on the scale of several degrees. The results show detection of…

Astrophysics · Physics 2007-05-23 Z. Zainal Abidin , J. P. Leahy , A. Wilkinson , P. Reich , W. Reich , R. Wielebinski

We investigate how the imprint of Faraday rotation on radio spectra can be used to determine the geometry of radio sources and the strength and structure of the surrounding magnetic fields. We model spectra of Stokes Q and U for frequencies…

Astrophysics of Galaxies · Physics 2015-05-27 D. H. F. M. Schnitzeler , J. K. Banfield , K. J. Lee

Diagnostics of polarized emission provide us with valuable information on the Galactic magnetic field and the state of turbulence in the interstellar medium, which cannot be obtained from synchrotron intensity alone. In Paper I (Herron et…

We present the first degree-scale tomography map of the dusty magnetized interstellar medium (ISM) from stellar polarimetry and distance measurements. We used the RoboPol polarimeter at Skinakas Observatory to conduct a survey of starlight…

Magnetic fields permeate the entire Galaxy and are essential to, for example, the regulation of several stages of the star formation process and cosmic ray transportation. Unraveling its properties, such as intensity and topology, is an…

There is evidence that magnetized material along the line of sight to distant quasars is detectable in the polarization properties of the background sources. The polarization properties appear to be correlated with the presence of…

Astrophysics of Galaxies · Physics 2016-10-05 Kwang Seong Kim , Simon J. Lilly , Francesco Miniati , M. L. Bernet , Rainer Beck , S. P. O'Sullivan , B. M. Gaensler

Considering the spatially separated polarization radiation and Faraday rotation regions to simulate complex interstellar media, we study synchrotron polarization gradient techniques' measurement capabilities. We explore how to trace the…

High Energy Astrophysical Phenomena · Physics 2021-07-14 Ru-Yue Wang , Jian-Fu Zhang , Alex Lazarian , Hua-Ping Xiao , Fu-Yuan Xiang

We present multi-frequency polarization observations of the diffuse radio synchrotron background modulated by Faraday rotation, in two directions of positive latitude. No extended total intensity I is observed, which implies that total…

Astrophysics · Physics 2014-10-13 M. Haverkorn , P. Katgert , A. G. de Bruyn

Faraday tomography (or rotation measure synthesis) is a procedure to convert linear polarization spectra into the Faraday dispersion function, which provides us with unique information of magneto-ionic media along the line of sight.…

Instrumentation and Methods for Astrophysics · Physics 2018-12-03 Kazunori Akiyama , Takuya Akahori , Yoshimitsu Miyashita , Shinsuke Ideguchi , Ryosuke Yamaguchi , Shiro Ikeda , Keitaro Takahashi

Cosmological simulations predict that an intergalactic magnetic field (IGMF) pervades the large scale structure (LSS) of the Universe. Measuring the IGMF is important to determine its origin (i.e. primordial or otherwise). Using data from…

Radio polarimetry at decimetre wavelengths is the principal source of information on the Galactic magnetic field. The diffuse polarized emission is strongly influenced by Faraday rotation in the magneto-ionic medium and rotation measure is…

Instrumentation and Methods for Astrophysics · Physics 2015-05-18 M. Wolleben , T. L. Landecker , G. J. Hovey , R. Messing , O. S. Davison , N. L. House , K. H. M. S. Somaratne , I. Tashev

Faraday tomography is a novel method to probe 3-dimensional structure of magnetic fields of polarized radio sources. In this paper, we investigate Faraday dispersion function (FDF) of disk galaxies extending a simple analytic model of…

Astrophysics of Galaxies · Physics 2020-09-16 Haruya Eguchi , Masaki Suzuki , Yoshimitsu Miyashita , Shinsuke Ideguchi , Keitaro Takahashi

Wide-band radio polarization observations offer the possibility to recover information about the magnetic fields in synchrotron sources, such as details of their three-dimensional configuration, that has previously been inaccessible. The…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Cathy Horellou , Andrew Fletcher

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…

We describe a Faraday-rotation structure in the Interstellar Medium detected through polarimetric imaging at 1420 MHz from the Canadian Galactic Plane Survey (CGPS). The structure, at l=91.8, b=-2.5, has an extent of ~2 degree, within which…

Astrophysics · Physics 2009-11-07 B. Uyaniker , T. L. Landecker
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