SIMBAD references

2020MNRAS.494..228L - Mon. Not. R. Astron. Soc., 494, 228-245 (2020/May-1)

The UTMOST pulsar timing programme - II. Timing noise across the pulsar population.

LOWER M.E., BAILES M., SHANNON R.M., JOHNSTON S., FLYNN C., OSLOWSKI S., GUPTA V., FARAH W., BATEMAN T., GREEN A.J., HUNSTEAD R., JAMESON A., JANKOWSKI F., PARTHASARATHY A., PRICE D.C., SUTHERLAND A., TEMBY D. and VENKATRAMAN KRISHNAN V.

Abstract (from CDS):

While pulsars possess exceptional rotational stability, large-scale timing studies have revealed at least two distinct types of irregularities in their rotation: red timing noise and glitches. Using modern Bayesian techniques, we investigated the timing noise properties of 300 bright southern-sky radio pulsars that have been observed over 1.0-4.8 yr by the upgraded Molonglo Observatory Synthesis Telescope (MOST). We reanalysed the spin and spin-down changes associated with nine previously reported pulsar glitches, report the discovery of three new glitches and four unusual glitch-like events in the rotational evolution of PSR J1825-0935. We develop a refined Bayesian framework for determining how red noise strength scales with pulsar spin frequency (ν) and spin-down frequency ({dot}ν), which we apply to a sample of 280 non-recycled pulsars. With this new method and a simple power-law scaling relation, we show that red noise strength scales across the non-recycled pulsar population as νa |{dot}ν|b, where a = -0.84+0.47–0.49 and b = 0.97+0.16–0.19. This method can be easily adapted to utilize more complex, astrophysically motivated red noise models. Lastly, we highlight our timing of the double neutron star PSR J0737-3039, and the rediscovery of a bright radio pulsar originally found during the first Molonglo pulsar surveys with an incorrectly catalogued position.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - astrometry - ephemerides - stars: neutron - pulsars: general

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 63

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2021.06.25-07:05:06

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