Related papers: The latest on Apertif

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

Apertif - the focal-plane array system for the WSRT

We describe a focal plane array (FPA) system, called Apertif, that is being developed for the Westerbork Synthesis Radio Telescope (WSRT). The aim of Apertif is to increase the instantaneous field of view of the WSRT by a factor of 37 and…

Instrumentation and Methods for Astrophysics · Physics 2009-12-02 Tom Oosterloo , Marc Verheijen , Wim van Cappellen , Laurens Bakker , George Heald , Marianna Ivashina

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

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

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

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

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

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

Phased Array Feed Calibration, Beamforming and Imaging

Phased array feeds (PAFs) for reflector antennas offer the potential for increased reflector field of view and faster survey speeds. To address some of the development challenges that remain for scientifically useful PAFs, including…

Instrumentation and Methods for Astrophysics · Physics 2015-05-14 Jonathan Landon , Michael Elmer , Jacob Waldron , David Jones , Alan Stemmons , Brian D. Jeffs , Karl F. Warnick , J. Richard Fisher , Roger D. Norrod

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

Testing a modified ASKAP Mark II phased array feed on the 64 m Parkes radio telescope

We present the first installation and characterization of a phased array feed (PAF) on the 64 m Parkes radio telescope. The combined system operates best between 0.8 GHz and 1.74 GHz where the beamformed noise temperature is between 45 K…

Instrumentation and Methods for Astrophysics · Physics 2017-03-08 A. P. Chippendale , R. J. Beresford , X. Deng , M. Leach , J. E. Reynolds , M. Kramer , T. Tzioumis

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

Performance of a highly sensitive, 19-element, dual-polarization, cryogenic L-band Phased Array Feed on the Green Bank Telescope

A new 1.4 GHz 19-element, dual-polarization, cryogenic phased array feed (PAF) radio astronomy receiver has been developed for the Robert C. Byrd Green Bank Telescope (GBT) as part of FLAG (Focal L-band Array for the GBT) project.…

Instrumentation and Methods for Astrophysics · Physics 2018-05-02 D. Anish Roshi , W. Shillue , B. Simon , K. F. Warnick , B. Jeffs , D. J. Pisano , R. Prestage , S. White , J. R. Fisher , M. Morgan , R. Black , M. Burnett , J. Diao , M. Ruzindana , V. van Tonder , L. Hawkins , P. Marganian , T. Chamberlin , J. Ray , N. M. Pingel , K. Rajwade , D. R. Lorimer , A. Rane , J. Castro , W. Groves , L. Jensen , J. D. Nelson , T. Boyd , A. J. Beasley

Australian Square Kilometre Array Pathfinder: I. System Description

In this paper we describe the system design and capabilities of the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope at the conclusion of its construction project and commencement of science operations. ASKAP is one of…

Instrumentation and Methods for Astrophysics · Physics 2021-07-01 A. W. Hotan , J. D. Bunton , A. P. Chippendale , M. Whiting , J. Tuthill , V. A. Moss , D. McConnell , S. W. Amy , M. T. Huynh , J. R. Allison , C. S. Anderson , K. W. Bannister , E. Bastholm , R. Beresford , D. C. -J. Bock , R. Bolton , J. M. Chapman , K. Chow , J. D. Collier , F. R. Cooray , T. J. Cornwell , P. J. Diamond , P. G. Edwards , I. J. Feain , T. M. O. Franzen , D. George , N. Gupta , G. A. Hampson , L. Harvey-Smith , D. B. Hayman , I. Heywood , C. Jacka , C. A. Jackson , S. Jackson , K. Jeganathan , S. Johnston , M. Kesteven , D. Kleiner , B. S. Koribalski , K. Lee-Waddell , E. Lenc , E. S. Lensson , S. Mackay , E. K. Mahony , N. M. McClure-Griffiths , R. McConigley , P. Mirtschin , A. K. Ng , R. P. Norris , S. E. Pearce , C. Phillips , M. A. Pilawa , W. Raja , J. E. Reynolds , P. Roberts , D. N. Roxby , E. M. Sadler , M. Shields , A. E. T. Schinckel , P. Serra , R. D. Shaw , T. Sweetnam , E. R. Troup , A. Tzioumis , M. A. Voronkov , T. Westmeier

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

A Model for Phased Array Feed

In this report we present a model for phased array feed (PAF) and compare the model predictions with measurements. A theory for loss-less PAF is presented first. To develop the theory we ask the question -- what is the best…

Instrumentation and Methods for Astrophysics · Physics 2019-02-06 D. Anish Roshi , J. Richard Fisher

Commissioning of FLAG: A phased array feed for the GBT

Phased Array Feed (PAF) technology is the next major advancement in radio astronomy in terms of combining high sensitivity and large field of view. The Focal L-band Array for the Green Bank Telescope (FLAG) is one of the most sensitive PAFs…

Instrumentation and Methods for Astrophysics · Physics 2018-08-22 K. M. Rajwade , N. M. Pingel , R. A. Black , M. Ruzindana , M. Burnett , B. Jeffs , K. Warnick , D. J. Pisano , D. R. Lorimer , R. M. Prestage , L. Hawkins , J. Ray , P. Marganian , T. Chamberlin , J. Ford , W. Shillue , D. A. Roshi

Observing Pulsars with a Phased Array Feed at the Parkes Telescope

During February 2016, CSIRO Astronomy and Space Science and the Max-Planck-Institute for Radio Astronomy installed, commissioned and carried out science observations with a phased array feed (PAF) receiver system on the 64m diameter Parkes…

Instrumentation and Methods for Astrophysics · Physics 2017-07-19 X. Deng , A. P. Chippendale , G. Hobbs , S. Johnston , S. Dai , D. George , M. Kramer , R. Karuppusamy , M. Malenta , L. Spitler , T. Tzioumis , G. Wieching

Multi-beaming propertieis of reflector antennas used in radio telescopes with wide field of view

The given work is devoted to the modern developments in the field of radio astronomy instrumentation. In particular, the sensitivity of the multi-beam reflector radio telescope which is fed by phased array (PAF) is considered. Using PAF as…

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