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

Abstract

We have used LOFAR to perform targeted millisecond pulsar surveys of Fermi gamma-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.

4 pages, 1 figure and 1 bet. Accepted for publication in the proceedings of the IAU Symposium 337 - Pulsar astrophysics: The Next Fifty Years

References in corpus (9)

• The pulsar spectral index distribution
• Three Millisecond Pulsars in FERMI LAT Unassociated Bright Sources
• Using long-term millisecond pulsar timing to obtain physical characteristics of the bulge globular cluster Terzan 5
• Constraints on the Emission Geometries and Spin Evolution of Gamma-ray Millisecond Pulsars
• LOFAR discovery of the fastest-spinning millisecond pulsar in the Galactic field
• Six millisecond pulsars detected by the Fermi Large Area Telescope and the radio/gamma-ray connection of millisecond pulsars
• Known Pulsars Identified in the GMRT 150 MHz All-Sky Survey
• Low-Frequency Spectral Turn-Overs in Millisecond Pulsars Studied from Imaging Observations
• A millisecond pulsar discovery in a survey of unidentified Fermi $\gamma$-ray sources with LOFAR

Cited by in corpus (1)

• The LOFAR Tied-Array All-Sky Survey (LOTAAS): Survey overview and initial pulsar discoveries