SIMBAD references

2016A&A...591A.134B - Astronomy and Astrophysics, volume 591A, 134-134 (2016/7-1)

A LOFAR census of non-recycled pulsars: average profiles, dispersion measures, flux densities, and spectra.

BILOUS A.V., KONDRATIEV V.I., KRAMER M., KEANE E.F., HESSELS J.W.T., STAPPERS B.W., MALOFEEV V.M., SOBEY C., BRETON R.P., COOPER S., FALCKE H., KARASTERGIOU A., MICHILLI D., OSLOWSKI S., SANIDAS S., TER VEEN S., VAN LEEUWEN J., VERBIEST J.P.W., WELTEVREDE P., ZARKA P., GRIESSMEIER J.-M., SERYLAK M., BELL M.E., BRODERICK J.W., EISLOFFEL J., MARKOFF S. and ROWLINSON A.

Abstract (from CDS):

We present first results from a LOFAR census of non-recycled pulsars. The census includes almost all such pulsars known (194 sources) at declinations Dec>8° and Galactic latitudes |Gb|>3°, regardless of their expected flux densities and scattering times. Each pulsar was observed for >=20-min in the contiguous frequency range of 110-188MHz. Full-Stokes data were recorded. We present the dispersion measures, flux densities, and calibrated total intensity profiles for the 158 pulsars detected in the sample. The median uncertainty in census dispersion measures (1.5x10–3pc/cm3) is ten times smaller, on average, than in the ATNF pulsar catalogue. We combined census flux densities with those in the literature and fitted the resulting broadband spectra with single or broken power-law functions. For 48 census pulsars such fits are being published for the first time. Typically, thechoice between single and broken power-laws, as well as the location of the spectral break, were highly influenced by the spectral coverage of the available flux density measurements. In particular, the inclusion of measurements below 100MHz appears essential for investigating the low-frequency turnover in the spectra for most of the census pulsars. For several pulsars, we compared the spectral indices from different works and found the typical spread of values to be within 0.5-1.5, suggesting a prevailing underestimation of spectral index errors in the literature. The census observations yielded some unexpected individual source results, as we describe in the paper. Lastly, we will provide this unique sample of wide-band, low-frequency pulse profiles via the European Pulsar Network Database.

Abstract Copyright: © ESO, 2016

Journal keyword(s): pulsars: general - telescopes - ISM: general

VizieR on-line data: <Available at CDS (J/A+A/591/A134): obssum.dat table1pl.dat table2pl.dat table3pl.dat refs.dat>

Simbad objects: 192

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2016A&A...591A.134B and select 'bookmark this link' or equivalent in the popup menu


2019.11.17-04:40:23

© Université de Strasbourg/CNRS

    • Contact