A
A. Schoenmakers
Researcher at ASTRON
Publications - 9
Citations - 581
A. Schoenmakers is an academic researcher from ASTRON. The author has contributed to research in topics: LOFAR & Radio telescope. The author has an hindex of 5, co-authored 9 publications receiving 535 citations.
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Journal ArticleDOI
Observing pulsars and fast transients with LOFAR
B. W. Stappers,Jason W. T. Hessels,Jason W. T. Hessels,A. Alexov,Kenneth C. Anderson,T. Coenen,T. E. Hassall,Aris Karastergiou,V. I. Kondratiev,Michael Kramer,Michael Kramer,J. van Leeuwen,J. van Leeuwen,J. D. Mol,A. Noutsos,John W. Romein,Patrick Weltevrede,Rob Fender,Ralph A. M. J. Wijers,L. Bähren,Martin Bell,J. W. Broderick,E. J. Daw,V. S. Dhillon,Jochen Eislöffel,Heino Falcke,Heino Falcke,J. M. Griessmeier,J. M. Griessmeier,Casey J. Law,Casey J. Law,Sera Markoff,James Miller-Jones,James Miller-Jones,Bart Scheers,H. Spreeuw,John D. Swinbank,S. ter Veen,Michael W. Wise,Michael W. Wise,Olaf Wucknitz,Philippe Zarka,J. M. Anderson,Ashish Asgekar,I. M. Avruch,I. M. Avruch,Rainer Beck,P. Bennema,Mark J. Bentum,Philip Best,Joel N. Bregman,Michiel A. Brentjens,R. H. van de Brink,P. C. Broekema,W. N. Brouw,Marcus Brüggen,A. G. de Bruyn,A. G. de Bruyn,Harvey Butcher,Harvey Butcher,B. Ciardi,John Conway,R.-J. Dettmar,A. van Duin,J. van Enst,M. A. Garrett,M. A. Garrett,M. Gerbers,T. Grit,A. W. Gunst,M. P. van Haarlem,J. P. Hamaker,George Heald,Matthias Hoeft,H. A. Holties,A. Horneffer,A. Horneffer,Léon V. E. Koopmans,Gerard H. Kuper,M. Loose,P. Maat,D. McKay-Bukowski,John McKean,George K. Miley,Raffaella Morganti,Raffaella Morganti,R. Nijboer,J. Noordam,M. J. Norden,Hans Olofsson,M. Pandey-Pommier,A. G. Polatidis,Wolfgang Reich,H. J. A. Röttgering,A. Schoenmakers,J. Sluman,Oleg Smirnov,Matthias Steinmetz,C. G. M. Sterks,Michel Tagger,Y. Tang,R. Vermeulen,N. J. Vermaas,C. Vogt,M. de Vos,Stefan J. Wijnholds,Sarod Yatawatta,A. Zensus +107 more
TL;DR: The LOw Frequency ARray (LOFAR) as mentioned in this paper is a radio interferometer operating in the lowest 4 octaves of the ionospheric "radio window": 10-240 MHz, that will greatly facilitate observing pulsars at low radio frequencies.
Journal ArticleDOI
Detecting cosmic rays with the LOFAR radio telescope
Pim Schellart,A. Nelles,Stijn Buitink,Arthur Corstanje,J. E. Enriquez,Heino Falcke,Heino Falcke,Heino Falcke,W. Frieswijk,Jörg R. Hörandel,A. Horneffer,C. W. James,Maria Krause,M. Mevius,Olaf Scholten,S. ter Veen,Satyendra Thoudam,M. van den Akker,A. Alexov,J. M. Anderson,I. M. Avruch,L. Bähren,Rainer Beck,Martin Bell,P. Bennema,Mark J. Bentum,Gianni Bernardi,Philip Best,Joel N. Bregman,F. Breitling,Michiel A. Brentjens,J. W. Broderick,Marcus Brüggen,Benedetta Ciardi,A. H. W. M. Coolen,F. de Gasperin,E. de Geus,A. de Jong,M. de Vos,S. Duscha,Jochen Eislöffel,Richard Fallows,Chiara Ferrari,M. A. Garrett,Jean-Mathias Grießmeier,T. Grit,J. P. Hamaker,T. E. Hassall,George Heald,Jason W. T. Hessels,Matthias Hoeft,H. A. Holties,Marco Iacobelli,E. Juette,Aris Karastergiou,Wouter Klijn,J. Kohler,V. I. Kondratiev,Michael Kramer,M. Kuniyoshi,Gerard H. Kuper,P. Maat,Giulia Macario,Gottfried Mann,Sera Markoff,D. McKay-Bukowski,John McKean,James Miller-Jones,J. D. Mol,D. D. Mulcahy,H. Munk,R. Nijboer,M. J. Norden,Emanuela Orru,R. Overeem,H. Paas,M. Pandey-Pommier,R. Pizzo,A. G. Polatidis,A. Renting,John W. Romein,H. J. A. Röttgering,A. Schoenmakers,Dominik J. Schwarz,J. Sluman,Oleg Smirnov,Charlotte Sobey,Ben Stappers,Matthias Steinmetz,John D. Swinbank,Y. Tang,Cyril Tasse,C. Toribio,J. van Leeuwen,R.V. van Nieuwpoort,R. J. van Weeren,N. J. Vermaas,Rene C. Vermeulen,Christian Vocks,C. Vogt,Ralph A. M. J. Wijers,Stefan J. Wijnholds,Michael W. Wise,Olaf Wucknitz,Sarod Yatawatta,Ph. Zarka,A. Zensus +106 more
TL;DR: In this article, the authors describe the dataset, as well as the analysis pipeline, and serve as a reference for future papers based on these data, including removal of radio frequency interference, correcting for the antenna response and identification of the pulsed signal.
Journal ArticleDOI
The LOFAR radio environment
A. R. Offringa,A. R. Offringa,A. G. de Bruyn,A. G. de Bruyn,Saleem Zaroubi,G. van Diepen,O. Martinez-Ruby,Panagiotis Labropoulos,Michiel A. Brentjens,Benedetta Ciardi,S. Daiboo,Geraint Harker,Vibor Jelić,S. Kazemi,Léon V. E. Koopmans,Garrelt Mellema,V. N. Pandey,R. Pizzo,Joop Schaye,Harish Vedantham,V. Veligatla,Stefan J. Wijnholds,Sarod Yatawatta,Ph. Zarka,A. Alexov,J. M. Anderson,Ashish Asgekar,M. Avruch,M. Avruch,Rainer Beck,Martin Bell,Martin Bell,Michael R. Bell,Mark J. Bentum,Gianni Bernardi,Gianni Bernardi,Philip Best,Laura Birzan,Annalisa Bonafede,F. Breitling,J. W. Broderick,Marcus Brüggen,Marcus Brüggen,Harvey Butcher,Harvey Butcher,John Conway,M. de Vos,R.-J. Dettmar,J. Eisloeffel,Heino Falcke,Rob Fender,W. Frieswijk,M. Gerbers,J. M. Griessmeier,J. M. Griessmeier,A. W. Gunst,T. E. Hassall,T. E. Hassall,George Heald,Jason W. T. Hessels,Matthias Hoeft,A. Horneffer,Aris Karastergiou,V. I. Kondratiev,Y. Koopman,M. Kuniyoshi,Gerard H. Kuper,P. Maat,Gottfried Mann,John McKean,H. Meulman,M. Mevius,J. D. Mol,R. Nijboer,J. Noordam,M. J. Norden,H. Paas,M. Pandey,R. Pizzo,A. G. Polatidis,D. A. Rafferty,Steve Rawlings,Wolfgang Reich,Huub Röttgering,A. Schoenmakers,J. Sluman,Oleg Smirnov,Oleg Smirnov,Charlotte Sobey,Ben Stappers,Matthias Steinmetz,John D. Swinbank,Michel Tagger,Y. Tang,Cyril Tasse,A. van Ardenne,A. van Ardenne,W. A. van Cappellen,A. van Duin,M. P. van Haarlem,J. van Leeuwen,R. J. van Weeren,R. J. van Weeren,R. Vermeulen,Christian Vocks,Ralph A. M. J. Wijers,Michael W. Wise,Olaf Wucknitz,Olaf Wucknitz +108 more
TL;DR: In this paper, the spectral occupancy for performing radio astronomy with the Low-Frequency Array (LOFAR), with a focus on imaging observations, was analyzed in two 24-h surveys with Dutch LOFAR stations, covering 30-78 MHz with lowband antennas and 115-163 MHz with high-band antennas.
Journal ArticleDOI
KAIRA: The Kilpisjärvi Atmospheric Imaging Receiver Array—System Overview and First Results
D. McKay-Bukowski,Juha Vierinen,Ilkka Virtanen,Richard Fallows,Markku Postila,Thomas Ulich,Olaf Wucknitz,Michiel A. Brentjens,Nico Ebbendorf,Carl-Fredrik Enell,Marchel Gerbers,T. Grit,Peter Gruppen,Antti Kero,Toivo Iinatti,Markku Lehtinen,Henri Meulman,M. J. Norden,Mikko Orispää,Tero Raita,Jan Pieter de Reijer,Lassi Roininen,A. Schoenmakers,Klaas Stuurwold,Esa Turunen +24 more
TL;DR: An overview of KAIRA, its principal hardware and software components, and its main science objectives are given and the applicability of the radio astronomy technology to geoscience application is demonstrated.
Journal ArticleDOI
LOFAR detections of low-frequency radio recombination lines towards Cassiopeia A
Ashish Asgekar,J. B. R. Oonk,Sarod Yatawatta,Sarod Yatawatta,R. J. van Weeren,R. J. van Weeren,R. J. van Weeren,John McKean,Glenn J. White,Glenn J. White,Neal Jackson,J. M. Anderson,I. M. Avruch,I. M. Avruch,I. M. Avruch,F. Batejat,Rainer Beck,Martin Bell,Martin Bell,Michael R. Bell,I. van Bemmel,Mark J. Bentum,Gianni Bernardi,Philip Best,Laura Birzan,Annalisa Bonafede,Robert Braun,F. Breitling,R. H. van de Brink,J. W. Broderick,W. N. Brouw,W. N. Brouw,Marcus Brüggen,Harvey Butcher,Harvey Butcher,W. A. van Cappellen,B. Ciardi,John Conway,F. de Gasperin,E. de Geus,A. de Jong,M. de Vos,S. Duscha,Jochen Eislöffel,Heino Falcke,Heino Falcke,Richard Fallows,Chiara Ferrari,Wilfred Frieswijk,M. A. Garrett,M. A. Garrett,Jean-Mathias Grießmeier,T. Grit,A. W. Gunst,T. E. Hassall,T. E. Hassall,George Heald,Jason W. T. Hessels,Jason W. T. Hessels,Matthias Hoeft,Marco Iacobelli,Huib Intema,Huib Intema,E. Juette,Aris Karastergiou,J. Kohler,V. I. Kondratiev,V. I. Kondratiev,M. Kuniyoshi,G. Kuper,Casey J. Law,Casey J. Law,J. van Leeuwen,J. van Leeuwen,P. Maat,Giulia Macario,Gottfried Mann,Sera Markoff,D. McKay-Bukowski,D. McKay-Bukowski,Maaijke Mevius,Maaijke Mevius,James Miller-Jones,James Miller-Jones,J. D. Mol,Raffaella Morganti,Raffaella Morganti,D. D. Mulcahy,H. Munk,M. J. Norden,Emanuela Orrú,Emanuela Orrú,H. Paas,M. Pandey-Pommier,V. N. Pandey,R. Pizzo,A. G. Polatidis,Wolfgang Reich,H. J. A. Röttgering,Bart Scheers,Bart Scheers,A. Schoenmakers,J. Sluman,Oleg Smirnov,Oleg Smirnov,Charlotte Sobey,Matthias Steinmetz,Michel Tagger,Y. Tang,C. Tasse,R. Vermeulen,Christian Vocks,Ralph A. M. J. Wijers,Michael W. Wise,Michael W. Wise,Olaf Wucknitz,Olaf Wucknitz,P. Zarka +117 more
TL;DR: In this paper, the authors used the low-band antennas of the LOw Frequency ARray (LOFAR) with high spectral resolution to search for radio recombination lines (RRLs) along the line-of-sight to the source.