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Targeted millisecond pulsar surveys of Fermi γ-ray sources with LOFAR

Published online by Cambridge University Press:  04 June 2018

C. G. Bassa ,
Z. Pleunis ,
J. W. T. Hessels ,
E. C. Ferrara ,
V. I. Kondratiev ,
S. Sanidas ,
A. G. Lyne ,
B. W. Stappers ,
S. M. Ransom  and
the Fermi Pulsar Search Consortium
C. G. Bassa
Affiliation:
ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, The Netherlands; bassa@astron.nl
Z. Pleunis
Affiliation:
Department of Physics and McGill Space Institute, McGill University, 3600 University St., Montreal, QC H3A 2T8, Canada
J. W. T. Hessels
Affiliation:
ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, The Netherlands; bassa@astron.nl Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
E. C. Ferrara
Affiliation:
Center for Research and Exploration in Space Science, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA Department of Astronomy, University of Maryland, College Park, MD 20742, USA
V. I. Kondratiev
Affiliation:
ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, The Netherlands; bassa@astron.nl Astro Space Centre, Lebedev Physical Institute, Russian Academy of Sciences, Profsoyuznaya Str. 84/32, Moscow 117997, Russia
S. Sanidas
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
A. G. Lyne
Affiliation:
Jodrell Bank Centre for Astrophysics, The University of Manchester, Manchester, M13 9PL, United Kingdom
B. W. Stappers
Affiliation:
Jodrell Bank Centre for Astrophysics, The University of Manchester, Manchester, M13 9PL, United Kingdom
S. M. Ransom
Affiliation:
National Radio Astronomy Observatory, Charlottesville, VA 22903, USA
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Abstract

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We have used LOFAR to perform targeted millisecond pulsar surveys of Fermi γ-ray sources. Operating at a center frequency of 135 MHz, the surveys use a novel semi-coherent dedispersion approach where coherently dedispersed trials at coarsely separated dispersion measures are incoherently dedispersed at finer steps. Three millisecond pulsars have been discovered as part of these surveys. We describe the LOFAR surveys and the properties of the newly discovered pulsars.

Keywords

surveysstars: neutronpulsars: generalbinaries: close
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S337: Pulsar Astrophysics the Next Fifty Years , September 2017 , pp. 33 - 36
Copyright
Copyright © International Astronomical Union 2018 

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