Related papers: Apertif - the focal-plane array system for the WSR…

The latest on Apertif

We describe a Phased Array Feed (PAF) system, called Apertif, which will be installed in the Westerbork Synthesis Radio Telescope (WSRT). The aim of Apertif is, at frequencies from 1.0 to 1.7 GHz, to increase the instantaneous field of view…

Instrumentation and Methods for Astrophysics · Physics 2019-08-12 Tom Oosterloo , Marc Verheijen , Wim van Cappellen

APERTIF, a focal plane array for the WSRT

In this paper we describe a focal plane array (FPA) prototype, based on Vivaldi elements, developed for the Westerbork Synthesis Radio Telescope (WSRT) to increase its instantaneous field of view by a factor 25 and double its current…

Astrophysics · Physics 2009-11-13 M. A. W. Verheijen , T. A. Oosterloo , W. A. van Cappellen , L. Bakker , M. V. Ivashina , J. M. van der Hulst

Real-time searches for fast transients with Apertif and LOFAR

With the installation of a new phased array system called Apertif, the instantaneous field of view of the Westerbork Synthesis Radio Telescope (WSRT) has increased to 8.7$\,$deg$^2$. This system has turned the WSRT in to an highly effective…

Instrumentation and Methods for Astrophysics · Physics 2019-11-13 Yogesh Maan , Joeri van Leeuwen

Apertif, Phased Array Feeds for the Westerbork Synthesis Radio Telescope

We describe the APERture Tile In Focus (Apertif) system, a phased array feed (PAF) upgrade of the Westerbork Synthesis Radio Telescope which has transformed this telescope into a high-sensitivity, wide field-of-view L-band imaging and…

Instrumentation and Methods for Astrophysics · Physics 2022-03-14 W. A. van Cappellen , T. A. Oosterloo , M. A. W. Verheijen , E. A. K. Adams , B. Adebahr , R. Braun , K. M. Hess , H. Holties , J. M. van der Hulst , B. Hut , E. Kooistra , J. van Leeuwen , G. M. Loose , R. Morganti , V. A. Moss , E. Orrú , M. Ruiter , A. P. Schoenmakers , N. J. Vermaas , S. J. Wijnholds , A. S. van Amesfoort , M. J. Arts , J. J. Attema , L. Bakker , C. G. Bassa , J. E. Bast , P. Benthem , R. Beukema , R. Blaauw , W. J. G. de Blok , M. Bouwhuis , R. H. van den Brink , L. Connor , A. H. W. M. Coolen , S. Damstra , G. N. J. van Diepen , R. de Goei , H. Dénes , M. Drost , N. Ebbendorf , B. S. Frank , D. W. Gardenier , M. Gerbers , Y. G. Grange , T. Grit , A. W. Gunst , N. Gupta , M. V. Ivashina , G. I. G. Józsa , G. H. Janssen , A. Koster , G. H. Kruithof , S. J. Kuindersma , A. Kutkin , D. M. Lucero , Y. Maan , F. M. Maccagni , J. van der Marel , A. Mika , J. Morawietz , H. Mulder , E. Mulder , M. J. Norden , A. R. Offringa , L. C. Oostrum , R. E. Overeem , Z. Paragi , H. J. Pepping , E. Petroff , D. J. Pisano , A. G. Polatidis , P. Prasad , J. P. R. de Reijer , J. W. Romein , J. Schaap , G. W. Schoonderbeek , R. Schulz , D. van der Schuur , A. Sclocco , J. J. Sluman , R. Smits , B. W. Stappers , S. M. Straal , K. J. C. Stuurwold , J. Verstappen , D. Vohl , K. J. Wierenga , E. E. M. Woestenburg , A. W. Zanting , J. Ziemke

Apercal -- The Apertif Calibration Pipeline

Apertif (APERture Tile In Focus) is one of the Square Kilometre Array (SKA) pathfinder facilities. The Apertif project is an upgrade to the 50-year-old Westerbork Synthesis Radio Telescope (WSRT) using phased-array feed technology. The new…

Instrumentation and Methods for Astrophysics · Physics 2021-12-08 B. Adebahr , R. Schulz , T. J. Dijkema , V. A. Moss , A. R. Offringa , A. Kutkin , J. M. van der Hulst , B. S. Frank , N. P. E. Vilchez , J. Verstappen , E. K. Adams , W. J. G. de Blok , H. Denes , K. M. Hess , D. Lucero , R. Morganti , T. Oosterloo , D. -J. Pisano , M. V. Ivashina , W. A. van Cappellen , L. D. Connor , A. H. W. M. Coolen , S. Damstra , G. M. Loose , Y. Maan , F. M. Maccagni , A. Mika , H. Mulder , L. C. Oostrum , E. Orru , R. Smits , D. van der Schuur , J. van Leeuwen , D. Vohl , S. J. Wijnholds , J. Ziemke

Characterising the Apertif primary beam response

Context. Phased Array Feeds (PAFs) are multi element receivers in the focal plane of a telescope that make it possible to form simultaneously multiple beams on the sky by combining the complex gains of the individual antenna elements.…

Instrumentation and Methods for Astrophysics · Physics 2022-11-09 H. Dénes , K. M. Hess , E. A. K. Adams , A. Kutkin , R. Morganti , J. M. van der Hulst , T. A. Oosterloo , V. A. Moss , B. Adebahr , W. J. G. de Blok , M. V. Ivashina , A. H. W. M. Coolen , S. Damstra , B. Hut , G. M. Loose , D. M. Lucero , Y. Maan , Á. Mika , M. J. Norden , L. C. Oostrum , D. J. Pisano , R. Smits , W. A. van Cappellen , R. van den Brink , D. van der Schuur , G. N. J. van Diepen , J. van Leeuwen , D. Vohl , S. J. Wijnholds , J. Ziemke

Modeling and optimization of the antenna system with focal plane array for the new generation radio telescopes with wide field of view

The model of the reflector antenna system with focal plane array, low-noise amplifier and beamformer is developed in the work. The beamformer strategy is suggested to reduce the receiving sensitivity ripple inside field of view of the…

Instrumentation and Methods for Astrophysics · Physics 2016-02-16 O. Iupikov

The Apertif Radio Transient System (ARTS): Design, Commissioning, Data Release, and Detection of the first 5 Fast Radio Bursts

Fast Radio Bursts must be powered by uniquely energetic emission mechanisms. This requirement has eliminated a number of possible source types, but several remain. Identifying the physical nature of Fast Radio Burst (FRB) emitters arguably…

High Energy Astrophysical Phenomena · Physics 2023-04-12 Joeri van Leeuwen , Eric Kooistra , Leon Oostrum , Liam Connor , J. E. Hargreaves , Yogesh Maan , Inés Pastor-Marazuela , Emily Petroff , Daniel van der Schuur , Alessio Sclocco , Samayra M. Straal , Dany Vohl , Stefan J. Wijnholds , Elizabeth A. K. Adams , Björn Adebahr , Jisk Attema , Cees Bassa , Jeanette E. Bast , Anna Bilous , W. J. G. de Blok , Oliver M. Boersma , Wim A. van Cappellen , Arthur H. W. M. Coolen , Sieds Damstra , Helga Dénes , Ger N. J. van Diepen , David W. Gardenier , Yan G. Grange , André W. Gunst , Kelley M. Hess , Hanno Holties , Thijs van der Hulst , Boudewijn Hut , Alexander Kutkin , G. Marcel Loose , Danielle M. Lucero , Ágnes Mika , Klim Mikhailov , Raffaella Morganti , Vanessa A. Moss , Henk Mulder , Menno J. Norden , Tom A. Oosterloo , Emaneula Orrú , Zsolt Paragi , Jan-Pieter R. de Reijer , Arno P. Schoenmakers , Klaas J. C. Stuurwold , Sander ter Veen , Yu-Yang Wang , Alwin W. Zanting , Jacob Ziemke

An interference detection strategy for Apertif based on AOFlagger 3

Context. Apertif is a multi-beam receiver system for the Westerbork Synthesis Radio Telescope that operates at 1.1-1.5 GHz, which overlaps with various radio services, resulting in contamination of astronomical signals with radio-frequency…

Instrumentation and Methods for Astrophysics · Physics 2023-02-22 A. R. Offringa , B. Adebahr , A. Kutkin , E. A. K. Adams , T. A. Oosterloo , J. M. van der Hulst , H. Dénes , C. G. Bassa , D. L. Lucero , W. J. G. Blok , K. M. Hess , J. van Leeuwen , G. M. Loose , Y. Maan , L. C. Oostrum , E. Orrú , D. Vohl , J. Ziemke

LOFAR and APERTIF surveys of the radio sky: probing shocks and magnetic fields in galaxy clusters

At very low frequencies, the new pan-European radio telescope LOFAR is opening the last unexplored window of the electromagnetic spectrum for astrophysical studies. The revolutionary APERTIF phased arrays that are about to be installed on…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-13 Huub Rottgering , Jose Afonso , Peter Barthel , Fabien Batejat , Philip Best , Annalisa Bonafede , Marcus Bruggen , Gianfranco Brunetti , Krzysztof Chyzy , John Conway , Francesco De Gasperin , Chiara Ferrari , Marijke Haverkorn , George Heald , Matthias Hoeft , Neal Jackson , Matt Jarvis , Louise Ker , Matt Lehnert , Giulia Macario , John McKean , George Miley , Raffaella Morganti , Tom Oosterloo , Emanuela Orru , Roberto Pizzo , David Rafferty , Alexander Shulevski , Cyril Tasse , Ilse van Bemmel , Bas van der Tol , Reinout van Weeren , Marc Verheijen , Glenn White , Michael Wise

First release of Apertif imaging survey data

(Abridged) Apertif is a phased-array feed system for WSRT, providing forty instantaneous beams over 300 MHz of bandwidth. A dedicated survey program started on 1 July 2019, with the last observations taken on 28 February 2022. We describe…

Instrumentation and Methods for Astrophysics · Physics 2022-11-23 Elizabeth A. K. Adams , B. Adebahr , W. J. G. de Blok , H. Denes , K. M. Hess , J. M. van der Hulst , A. Kutkin , D. M. Lucero , R. Morganti , V. A. Moss , T. A. Oosterloo , E. Orru , R. Schulz , A. S. van Amesfoort , A. Berger , O. M. Boersma , M. Bouwhuis , R. van den Brink , W. A. van Cappellen , L. Connor , A. H. W. M. Coolen , S. Damstra , G. N. J. van Diepen , T. J. Dijkema , N. Ebbendorf , Y. G. Grange , R. de Goei , A. W. Gunst , H. A. Holties , B. Hut , M. V. Ivashina , G. I. G. Jozsa , G. M. Loose , J. van Leeuwen , Y. Maan , M. Mancini , A. Mika , H. Mulder , M. J. Norden , A. R. Offringa , L. C. Oostrum , I. Pastor-Marazuela , D. J. Pisano , A. A. Ponomareva , J. W. Romein , M Ruiter , A. P. Schoenmakers , D. van der Schuur , J. J. Sluman , R. Smits , K. J. C Stuurwold , J. Verstappen , N. P. E Vilchez , D. Vohl , K. J. Wierenga , S. J. Wijnholds , E. E. M. Woestenburg , A. W. Zanting , J. Ziemke

A Deep WSRT 1.4 GHz Radio Survey of the Spitzer Space Telescope FLSv Region

The First Look Survey (FLS) is the first scientific product to emerge from the Spitzer Space Telescope. A small region of this field (the verification strip) has been imaged very deeply, permitting the detection of cosmologically distant…

Astrophysics · Physics 2009-11-10 R. Morganti , M. A. Garrett , S. Chapman , W. Baan , G. Helou , T. Soifer

Repeating fast radio bursts with WSRT/Apertif

Repeating fast radio bursts (FRBs) present excellent opportunities to identify FRB progenitors and host environments, as well as decipher the underlying emission mechanism. Detailed studies of repeating FRBs might also hold clues to the…

High Energy Astrophysical Phenomena · Physics 2020-03-11 L. C. Oostrum , Y. Maan , J. van Leeuwen , L. Connor , E. Petroff , J. J. Attema , J. E. Bast , D. W. Gardenier , J. E. Hargreaves , E. Kooistra , D. van der Schuur , A. Sclocco , R. Smits , S. M. Straal , S. ter Veen , D. Vohl , E. A. K. Adams , B. Adebahr , W. J. G. de Blok , R. H. van den Brink , W. A. van Cappellen , A. H. W. M. Coolen , S. Damstra , G. N. J. van Diepen , B. S. Frank , K. M. Hess , J. M. van der Hulst , B. Hut , M. V. Ivashina , G. M. Loose , D. M. Lucero , Á. Mika , R. H. Morganti , V. A. Moss , H. Mulder , M. J. Norden , T. A. Oosterloo , E. Orrú , J. P. R. de Reijer , M. Ruiter , N. J. Vermaas , S. J. Wijnholds , J. Ziemke

The Northern High Time Resolution Universe pulsar survey: II. Single-pulse search set-up and simulations

The High Time Resolution Universe (HTRU) survey is an all-sky survey looking for pulsars and other radio transients. A new single-pulse (SP) search pipeline is presented, tailored to the northern part of the HTRU survey collected with the…

Instrumentation and Methods for Astrophysics · Physics 2026-03-04 L. J. M. Houben , H. Falcke , L. G. Spitler , E. D. Barr , M. Berezina , D. J. Champion , R. Karuppusamy , M. Kramer

Apertif 1.4 GHz continuum observations of the Bo\"otes field and their combined view with LOFAR

We present a new image of a 26.5 square degree region in the Bo\"otes constellation obtained at 1.4 GHz using the Aperture Tile in Focus (Apertif) system on the Westerbork Synthesis Radio Telescope. We use a newly developed processing…

Instrumentation and Methods for Astrophysics · Physics 2023-08-09 A. M. Kutkin , T. A. Oosterloo , R. Morganti , A. R. Offringa , E. A. K. Adams , B. Adebahr , H. Dénes , K. M. Hess , J. M. van der Hulst , W. J. G. de Blok , A. Bozkurt , W. A. van Cappellen , A. W. Gunst , H. A. Holties , J. van Leeuwen , G. M. Loose , L. C. Oostrum , D. Vohl , S. J. Wijnholds , J. Ziemke

The Westerbork HI Survey of Spiral and Irregular Galaxies II. R-Band Surface Photometry of Late-type Dwarf Galaxies

R-band surface photometry is presented for 171 late-type dwarf and irregular galaxies. For a subsample of 46 galaxies B-band photometry is presented as well. We present surface brightness profiles as well as isophotal and photometric…

Astrophysics · Physics 2009-11-07 R. A. Swaters , M. Balcells

Real-Time RFI Mitigation for the Apertif Radio Transient System

Current and upcoming radio telescopes are being designed with increasing sensitivity to detect new and mysterious radio sources of astrophysical origin. While this increased sensitivity improves the likelihood of discoveries, it also makes…

Instrumentation and Methods for Astrophysics · Physics 2020-01-17 Alessio Sclocco , Dany Vohl , Rob V. van Nieuwpoort

The MPIfR-MeerKAT Galactic Plane survey I -- System setup and early results

Galactic plane radio surveys play a key role in improving our understanding of a wide range of astrophysical phenomena. Performing such a survey using the latest interferometric telescopes produces large data rates necessitating a shift…

High Energy Astrophysical Phenomena · Physics 2023-06-22 P. V. Padmanabh , E. D. Barr , S. S. Sridhar , M. R. Rugel , A. Damas-Segovia , A. M. Jacob , V. Balakrishnan , M. Berezina , M. C. i Bernadich , A. Brunthaler , D. J. Champion , P. C. C. Freire , S. Khan , H. -R. Klöckner , M. Kramer , Y. K. Ma , S. A. Mao , Y. P. Men , K. M. Menten , S. Sengupta , V. Venkatraman Krishnan , O. Wucknitz , F. Wyrowski , M. C. Bezuidenhout , S. Buchner , M. Burgay , W. Chen , C. J. Clark , L. Künkel , L. Nieder , B. Stappers , L. S. Legodi , M. M. Nyamai

A deep radio survey of the AKARI North Ecliptic Pole Field - WSRT 20 cm Radio survey description, observations and data reduction

The Westerbork Radio Synthesis Telescope, WSRT, has been used to make a deep radio survey of an ~ 1.7 sq degree field coinciding with the AKARI North Ecliptic Pole Deep Field. The observations, data reduction and source count analysis are…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Glenn J. White , Chris Pearson , Robert Braun , Stephen Serjeant , Hideo Matsuhara , Toshinobu Takagi , Takao Nakagawa , Russell Shipman , Peter Barthel , Narae Hwang , Hyung Mok Lee , Myung Gyoon Lee , Myungshin Im , Takehiko Wada , Shinki Oyabu , Soojong Pak , Moo-Young Chun , Hitoshi Hanami , Tomotsugu Goto , Seb Oliver

The PALFA Survey: Going to great depths to find radio pulsars

The on-going PALFA survey is searching the Galactic plane (|b| < 5 deg., 32 < l < 77 deg. and 168 < l < 214 deg.) for radio pulsars at 1.4 GHz using ALFA, the 7-beam receiver installed at the Arecibo Observatory. By the end of August 2012,…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 P. Lazarus , B. Allen , N. D. R. Bhat , S. Bogdanov , A. Bouchard , A. Brazier , F. Camilo , F. Cardoso , S. Chatterjee , J. M. Cordes , F. Crawford , J. S. Deneva , G. Desvignes , P. C. C. Freire , J. W. T. Hessels , F. A. Jenet , V. M. Kaspi , B. Knispel , J. van Leeuwen , D. R. Lorimer , R. Lynch , A. G. Lyne , M. A. McLaughlin , D. J. Nice , S. M. Ransom , P. Scholz , X. Siemens , I. H. Stairs , B. W. Stappers , K. Stovall , J. Swiggum