Initial deep LOFAR observations of epoch of reionization windows. I. The north celestial pole

  title={Initial deep LOFAR observations of epoch of reionization windows. I. The north celestial pole},
  author={Sarod Yatawatta and A. G. de Bruyn and Michiel Brentjens and Panagiotis Labropoulos and V. N. Pandey and Sanaz Kazemi and Saleem Zaroubi and L{\'e}on V. E. Koopmans and Andr{\'e} R. Offringa and Vibor Jeli{\'c} and O. Martinez Rubi and V. K. Veligatla and Stefan J. Wijnholds and Willem Brouw and Gianni Bernardi and Benedetta Ciardi and Soobash Daiboo and Geraint J. A. Harker and Garrelt Mellema and Joop Schaye and R. M. C. Thomas and Harish K. Vedantham and Emma Chapman and Filipe B. Abdalla and Anastasia Alexov and J. Anderson and I. M. Avruch and Fabien Batejat and Martin E. Bell and Michael R. Bell and M. J. Bentum and Philip N. Best and Annalisa Bonafede and Jaap D. Bregman and Frank Breitling and R. H. van de Brink and Jess W. Broderick and Marcus Bruggen and J. Conway and F. de Gasperin and Eug{\'e}ne J. De Geus and Sven Duscha and Heino Falcke and Richard A. Fallows and Christophe Ferrari and Wilfred W.F. Frieswijk and Michael A. Garrett and Jean-Mathias Grie{\ss}meier and Andre W. Gunst and T. E. Hassall and Jason W. T. Hessels and M. Hoeft and Marco Iacobelli and Eva Juette and Aris Karastergiou and Vladislav I. Kondratiev and Michael Kramer and Masaya Kuniyoshi and Gerard H. Kuper and Joeri van Leeuwen and Peter Maat and Gottfried Mann and J. P. McKean and Maaijke Mevius and Jan David Mol and H. Munk and Ronald Nijboer and Jan E. Noordam and Menno Norden and Emanuela Orr̀u and H. J. Paas and Mamta Pandey-Pommier and R F Pizzo and A. G. Polatidis and Wolfgang Reich and H. J. A. Rottgering and J. Sluman and Oleg M. Smirnov and Ben W. Stappers and Matthias Steinmetz and Michel Tagger and Y. Tang and Cyril Tasse and Sander ter Veen and Ren{\'e} C. Vermeulen and R. J. van Weeren and Michael W. Wise and Olaf Wucknitz and Philippe Zarka},
  journal={Astronomy and Astrophysics},
Aims. The aim of the LOFAR epoch of reionization (EoR) project is to detect the spectral fluctuations of the redshifted HI 21 cm signal. This signal is weaker by several orders of magnitude than the astrophysical foreground signals and hence, in order to achieve this, very long integrations, accurate calibration for stations and ionosphere and reliable foreground removal are essential. Methods. One of the prospective observing windows for the LOFAR EoR project will be centered at the north… Expand
Constraining the epoch of reionization with the variance statistic
The Epoch of Reionization (EoR) is the epoch in which most of the neutral gas in the Universe was re-ionized by the radiation from the first stars and galaxies. Many projects are underway to detectExpand
Constraining the epoch of reionization with the variance statistic
  • A. H. Patil
  • Physics
  • 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS)
  • 2014
The Epoch of Reionization (EoR) is the epoch in which most of the neutral gas in the Universe was re-ionized by the radiation from the first stars and galaxies. Many projects are underway to detectExpand
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One of the problems facing experiments designed to detect redshifted 21-cm emission from the epoch of reionization (EoR) is the presence of foregrounds which exceed the cosmological signal inExpand
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