A LOFAR census of millisecond pulsars

  title={A LOFAR census of millisecond pulsars},
  author={Vladislav I. Kondratiev and Joris P W Verbiest and Jason W. T. Hessels and Anna V. Bilous and Ben W. Stappers and Michael Kramer and Evan F. Keane and Aristeidis Noutsos and Stefan Osłowski and Rene P. Breton and T. E. Hassall and Anastasia Alexov and S. Cooper and Heino Falcke and Jean-Mathias Grie{\ss}meier and Aris Karastergiou and Masaya Kuniyoshi and Maura Pilia and Charlotte Sobey and Sander ter Veen and Joeri van Leeuwen and Patrick Weltevrede and Martin E. Bell and Jess W. Broderick and S. Corbel and Jochen Eisloffel and Sera B. Markoff and Antonia Rowlinson and John D. Swinbank and Ralph Wijers and Rudy Wijnands and Philippe Zarka},
  journal={Astronomy and Astrophysics},
We report the detection of 48 millisecond pulsars (MSPs) out of 75 observed thus far using the LOFAR in the frequency range 110-188 MHz. We have also detected three MSPs out of nine observed in the frequency range 38-77 MHz. This is the largest sample of MSPs ever observed at these low frequencies, and half of the detected MSPs were observed for the first time at frequencies below 200 MHz. We present the average pulse profiles of the detected MSPs, their effective pulse widths, and flux… 

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