A LOFAR census of non-recycled pulsars: extending below 80 MHz

Abstract

We present the results from the low-frequency (40--78 MHz) extension of the first LOFAR pulsar census of non-recycled pulsars. We have used the Low-Band Antennas of the LOFAR core stations to observe 87 pulsars out of 158 that have been detected previously with the High-Band Antennas. Forty-three pulsars have been detected and we present here their flux densities and flux-calibrated profiles. Seventeen of these pulsars have not been, to our knowledge, detected before at such low frequencies. We re-calculate the spectral indices using the new low-frequency flux density measurements from the LOFAR census and discuss the prospects of studying pulsars at the very low frequencies with the current and upcoming facilities, such as NenuFAR.

arXiv commentsubmitted to A&A

References in corpus (42)

• The ATNF Pulsar Catalogue
• LOFAR: The LOw-Frequency ARray
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• The LOFAR Two-metre Sky Survey - II. First data release
• LOFAR facet calibration
• The Very Large Array Low-frequency Sky Survey Redux (VLSSr)
• Pulsar spectra of radio emission
• Spectral properties of 441 radio pulsars
• Observing pulsars and fast transients with LOFAR
• The Parkes multibeam pulsar survey: IV. Discovery of 180 pulsars and parameters for 281 previously known pulsars
• The Brightest Pulses in the Universe: Multifrequency Observations of the Crab Pulsar's Giant Pulses
• PSRCHIVE and PSRFITS: Definition of the Stokes Parameters and Instrumental Basis Conventions
• Prospects for High-Precision Pulsar Timing with the New Effelsberg PSRIX Backend
• A LOFAR census of non-recycled pulsars: average profiles, dispersion measures, flux densities, and spectra
• The Green Bank Telescope 350 MHz Drift-scan Survey I: Survey Observations and the Discovery of 13 Pulsars
• The Northern High Time Resolution Universe Pulsar Survey I: Setup and initial discoveries
• A LOFAR census of millisecond pulsars
• The Radio Spectral Index of the Crab Nebula
• Long-Term Scintillation Studies of Pulsars: I. Observations and Basic Results
• Arecibo timing and single-pulse observations of 17 pulsars
• New Pulsars from an Arecibo Drift Scan Search
• Pulsar Observations Using the First Station of the Long Wavelength Array and the LWA Pulsar Data Archive
• Arecibo Timing and Single Pulse Observations of 18 Pulsars
• Radio pulsars: already fifty years!
• Polarimetric Properties of the Crab Pulsar between 1.4 and 8.4 GHz
• Long-term Scintillation Observations of Five Pulsars at 1540 MHz
• High frequency observations of southern pulsars
• Polarization observations of 100 pulsars at 774 MHz by the Green Bank Telescope
• Turn-over in pulsar spectra around 1 GHz
• A low frequency study of PSRs B1133+16, B1112+50, and B0031-07
• A census of the pulsar population observed with the international LOFAR station FR606 at low frequencies (25-80~MHz)
• Observations of pulsars at 9 millimetres
• Low frequency spectral energy distributions of radio pulsars detected with the Murchison Widefield Array
• Flux-density spectral analysis for several pulsars and two newly-identified gigahertz-peaked spectra
• Quantifying ionospheric effects on time-domain astrophysics with the Murchison Widefield Array
• A Census of Southern Pulsars at 185 MHz
• Discovery of 10 pulsars in an Arecibo drift-scan survey
• TMRT observations of 26 pulsars at 8.6 GHz
• The Arecibo 430-MHz Intermediate Galactic Latitude Survey: Discovery of Nine Radio Pulsars
• The Second Cambridge Pulsar Survey at 81.5 MHz
• Analysis of single pulse radio flux measurements of PSR B1133+16 at 4.85 and 8.35 GHz

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• Radio Pulsar Beam Geometry at Lower Frequencies: Bright Sources Outside the Arecibo Sky
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• Radio Pulsar Emission-Beam Geometry at Low Frequency: LOFAR High Band Survey Sources Studied using Arecibo at 1.4 GHz and 327 MHz
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• Arecibo Pulsar Beam Geometry at Lower Frequencies Radio Pulsar Beam Geometry Down to the 100-MHz Band: 76 Additional Sources Within the Arecibo Sky
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• The significance of low frequency interferometric observations for the GPS pulsar flux estimation: the case of J1740+1000
• Radio Emission of Pulsars. II. Coherence Catalyzed by Cerenkov-Unstable Shear Alfvén Waves
• The uGMRT observations of three new GPS pulsars
• Global Sky Models can Improve Flux Estimates in Pulsar and FRB Studies
• Evaluating Low-Frequency Pulsar Observations to Monitor Dispersion with the Giant Metrewave Radio Telescope
• The Low-Frequency Spectra of Radio Pulsars
• 50-250 MHz Pulsar Census with an SKA-Low prototype station: Spectra and Polarization