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Journal of Astrophysics and Astronomy

, Volume 32, Issue 4, pp 557–566 | Cite as

LOFAR and APERTIF Surveys of the Radio Sky: Probing Shocks and Magnetic Fields in Galaxy Clusters

  • Huub RöttgeringEmail author
  • Jose Afonso
  • Peter Barthel
  • Fabien Batejat
  • Philip Best
  • Annalisa Bonafede
  • Marcus Brüggen
  • Gianfranco Brunetti
  • Krzysztof Chyży
  • 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 Orrù
  • Roberto Pizzo
  • David Rafferty
  • Alexander Shulevski
  • Cyril Tasse
  • Ilse van Bemmel
  • Bas van der Tol
  • Reinout van Weeren
  • Marc Verheijen
  • Glenn White
  • Michael Wise
Article

Abstract

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 the Westerbork radio telescope (WSRT) will dramatically increase the survey speed for the WSRT. Combined surveys with these two facilities will deeply chart the northern sky over almost two decades in radio frequency from ∼15 up to 1400 MHz. Here we briefly describe some of the capabilities of these new facilities and what radio surveys are planned to study fun-damental issues related to the formation and evolution of galaxies and clusters of galaxies. In the second part we briefly review some recent observational results directly showing that diffuse radio emission in clusters traces shocks due to cluster mergers. As these diffuse radio sources are relatively bright at low frequencies, LOFAR should be able to detect thousands of such sources up to the epoch of cluster formation. This will allow addressing many question about the origin and evolution of shocks and magnetic fields in clusters. At the end we briefly review some of the first and very preliminary LOFAR results on clusters.

Keywords

Galaxies clusters general, intracluster medium radio continuum: galaxies radio telescopes 

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Copyright information

© Indian Academy of Sciences 2011

Authors and Affiliations

  • Huub Röttgering
    • 1
    Email author
  • Jose Afonso
    • 2
  • Peter Barthel
    • 3
  • Fabien Batejat
    • 4
  • Philip Best
    • 5
  • Annalisa Bonafede
    • 6
  • Marcus Brüggen
    • 6
  • Gianfranco Brunetti
    • 7
  • Krzysztof Chyży
    • 8
  • John Conway
    • 9
  • Francesco De Gasperin
    • 10
  • Chiara Ferrari
    • 11
  • Marijke Haverkorn
    • 1
    • 12
    • 17
  • George Heald
    • 12
  • Matthias Hoeft
    • 13
  • Neal Jackson
    • 14
  • Matt Jarvis
    • 15
  • Louise Ker
    • 5
  • Matt Lehnert
    • 16
  • Giulia Macario
    • 7
  • John McKean
    • 12
  • George Miley
    • 1
  • Raffaella Morganti
    • 3
    • 12
  • Tom Oosterloo
    • 3
    • 12
  • Emanuela Orrù
    • 17
  • Roberto Pizzo
    • 12
  • David Rafferty
    • 1
  • Alexander Shulevski
    • 3
  • Cyril Tasse
    • 16
  • Ilse van Bemmel
    • 12
  • Bas van der Tol
    • 1
  • Reinout van Weeren
    • 1
  • Marc Verheijen
    • 3
  • Glenn White
    • 18
  • Michael Wise
    • 12
  1. 1.Sterrewacht LeidenLeidenThe Netherlands
  2. 2.Observatório Astronómico de Lisboa, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
  3. 3.Kapteyn InstituutGroningenThe Netherlands
  4. 4.Chalmers University of Technology, Onsala Space ObservatoryOnsalaSweden
  5. 5.Royal ObservatoryBlackford HillUK
  6. 6.Jacobs University BremenBremenGermany
  7. 7.INAF, Istituto di RadioastronomiaBolognaItaly
  8. 8.Jagiellonian UniversityKrakówPOLAND
  9. 9.Chalmers University of Technology, Onsala Space ObservatoryOnsalaSweden
  10. 10.Max-Planck-Institut für AstrophysikGarchingGermany
  11. 11.UNS, CNRS UMR 6202 Cassiopée, Observatoire de la Cote d’AzurNiceFrance
  12. 12.ASTRONDwingelooThe Netherlands
  13. 13.Thüringer LandessternwarteTautenburgGermany
  14. 14.Jodrell Bank Centre for AstrophysicsUniversity of ManchesterManchesterUK
  15. 15.Centre for AstrophysicsUniversity of HertfordshireHertsUK
  16. 16.Observatoire de ParisMeudonFrance
  17. 17.Radboud University NijmegenNijmegenThe Netherlands
  18. 18.Department of Physics and AstronomyThe Open University, Milton Keynes, MK7 6AA, Space Science and Technology Department, STFC Rutherford Appleton LaboratoryChiltonUK

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