Building X-ray pulsar timing model without the use of radio parameters
Sign Up to like & getrecommendations! Published in 2018 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2017.11.014
Abstract: Abstract This paper develops a timing solution for the X-ray pulsar timing model without the use of the initial radio model parameters. First, we address the problem of phase ambiguities for the pre-fit residuals in… read more here.
Keywords: pulsar; radio; model; ray pulsar ... See more keywords
Searching for bispectrum of stochastic gravitational waves with pulsar timing arrays
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/03/032
Abstract: We study how to probe bispectra of stochastic gravitational waves with pulsar timing arrays. The bispectrum is a key to probe the origin of stochastic gravitational waves. In particular, the shape of the bispectrum carries… read more here.
Keywords: gravitational waves; stochastic gravitational; timing arrays; waves pulsar ... See more keywords
Applying clock comparison methods to pulsar timing observations
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab742
Abstract: Frequency metrology outperforms any other branch of metrology in accuracy (parts in 10−16) and small fluctuations ( read more here.
Keywords: pulsar timing; metrology; frequency metrology; applying clock ... See more keywords
The MeerKAT Pulsar Timing Array: First Data Release
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stac3644
Abstract: We present the first 2.5 years of data from the MeerKAT Pulsar Timing Array (MPTA), part of MeerTime, a MeerKAT Large Survey Project. The MPTA aims to precisely measure pulse arrival times from an ensemble of… read more here.
Keywords: arrival times; meerkat pulsar; pulsar timing; timing array ... See more keywords
Erratum: Investigating dark matter substructure with pulsar timing - II. Improved limits on small-scale cosmology [MNRAS, 456, 2 (2016) (1402-1409)] DOI:10.1093/mnras/stv2529
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stw2305
Abstract: The paper 'Investigating darkmatter substructure with pulsar timing - II. Improved limits on small-scale cosmology' was published in MNRAS, 456, 1402 (Paper II, Clark, Lewis & Scott 2016b). Due to an error in the interpretation… read more here.
Keywords: improved limits; timing improved; limits small; cosmology ... See more keywords
Improved pulsar timing via principal component mode tracking
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx3239
Abstract: We present a principal component analysis method which tracks and compensates for short-timescale variability in pulsar profiles, with a goal of improving pulsar timing precision. We couple this with a fast likelihood technique for determining… read more here.
Keywords: principal component; improved pulsar; timing via; pulsar timing ... See more keywords
Associating host galaxy candidates to massive black hole binaries resolved by pulsar timing arrays
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz420
Abstract: We propose a novel methodology to select host galaxy candidates of future pulsar timing array (PTA) detections of resolved gravitational waves (GWs) from massive black hole binaries (MBHBs). The method exploits the physical dependence of… read more here.
Keywords: galaxy; galaxy candidates; host; massive black ... See more keywords
Pulsar timing probes of primordial black holes and subhalos
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.023003
Abstract: Pulsars act as accurate clocks, sensitive to gravitational redshift and acceleration induced by transiting clumps of matter. We study the sensitivity of pulsar timing arrays (PTAs) to single transiting compact objects, focusing on primordial black… read more here.
Keywords: probes primordial; timing probes; holes subhalos; black holes ... See more keywords
From bright binaries to bumpy backgrounds: Mapping realistic gravitational wave skies with pulsar-timing arrays
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.084039
Abstract: Within the next several years, pulsar-timing array programs will likely usher in the next era of gravitational-wave astronomy through the detection of a stochastic background of nanohertz-frequency gravitational waves, originating from a cosmological population of… read more here.
Keywords: gravitational wave; pulsar timing; power; wave ... See more keywords
Accurate characterization of the stochastic gravitational-wave background with pulsar timing arrays by likelihood reweighting
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.084045
Abstract: An isotropic stochastic background of nanohertz gravitational waves creates excess residual power in pulsar-timing-array datasets, with characteristic inter-pulsar correlations described by the Hellings-Downs function. These correlations appear as nondiagonal terms in the noise covariance matrix,… read more here.
Keywords: stochastic gravitational; characterization stochastic; accurate characterization; background ... See more keywords
Pulsar timing perturbations from Galactic gravitational wave bursts with memory
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.96.123016
Abstract: Pulsar timing arrays (PTAs) are used to search for long-wavelength gravitational waves (GWs) by monitoring a set of spin-stable millisecond pulsars. Most theoretical analyses assume that the relevant GW sources are much more distant from… read more here.
Keywords: perturbations galactic; timing perturbations; bursts memory; pulsar timing ... See more keywords