A Pilot Study of Nulling in 22 Pulsars Using Mixture Modeling
The Astrophysical Journal, 2023 The phenomenon of pulsar nulling, observed as the temporary inactivity of a pulsar, remains poorly understood both observationally and theoretically.
Akash Anumarlapudi +3 more
doaj +1 more source
Scattering Delay Mitigation in High-accuracy Pulsar Timing: Cyclic Spectroscopy Techniques
The Astrophysical Journal, 2023 We simulate scattering delays from the interstellar medium to examine the effectiveness of three estimators in recovering these delays in pulsar timing data. Two of these estimators use the more traditional process of fitting autocorrelation functions to
Jacob E. Turner +5 more
doaj +1 more source
Taming outliers in pulsar-timing datasets with hierarchical likelihoods and Hamiltonian sampling [PDF]
, 2016 Pulsar-timing datasets have been analyzed with great success using probabilistic treatments based on Gaussian distributions, with applications ranging from studies of neutron-star structure to tests of general relativity and searches for nanosecond ...
Vallisneri, Michele +1 more
core +3 more sources
Decade-long Timing Study of the Black Widow Millisecond Pulsar J1544+4937
The Astrophysical Journal, 2023 Results from 11 yr of radio timing for the eclipsing black widow millisecond pulsar (MSP) binary J1544+4937 is presented in this paper. We report a phase-connected timing model for this MSP, using observations with the Giant Metrewave Radio Telescope ...
Sangita Kumari +3 more
doaj +1 more source
Coherent network analysis for continuous gravitational wave signals in a pulsar timing array: Pulsar phases as extrinsic parameters [PDF]
, 2015 Supermassive black hole binaries are one of the primary targets for gravitational wave searches using pulsar timing arrays. Gravitational wave signals from such systems are well represented by parametrized models, allowing the standard Generalized ...
Jenet, Fredrick A. +2 more
core +3 more sources
Searching for gravitational waves from the Crab pulsar - the problem of timing noise [PDF]
, 2003 Of the current known pulsars, the Crab pulsar (B0531+21) is one of the most promising sources of gravitational waves. The relatively large timing noise of the Crab causes its phase evolution to depart from a simple spin-down model.
+7 more
core +3 more sources
A new time-domain estimation method for period of pulsars
Acta Physica Sinica, 2012 The estimation of pulsar period is important for pulsar searching, observation and timing. In this paper, the frequency-domain method which is popular in periodicity searches is analyzed, and further more, a novel method in time-domain is proposed to estimate the cyclo-period of pulsars based on the second-order cyclo-stationary model of the radiation ...
Li Jian-Xun, Ke Xi-Zheng, Zhao Bao-Sheng
openaire +1 more source
Mapping gravitational-wave backgrounds using methods from CMB analysis: Application to pulsar timing arrays [PDF]
Physical Review D, 2014 48 pages, 16 figures, to appear in Phys. Rev.
Gair, Jonathan R. +3 more
openaire +4 more sources
The optimal filters for the construction of the ensemble pulsar time [PDF]
, 2008 The algorithm of the ensemble pulsar time based on the optimal Wiener filtration method has been constructed. This algorithm allows the separation of the contributions to the post-fit pulsar timing residuals of the atomic clock and pulsar itself. Filters
Rodin, Alexander E.
core +1 more source
Probing the properties of the pulsar wind via studying the dispersive effects in the pulses from the pulsar companion in a double neutron-star binary system [PDF]
, 2017 The velocity and density distribution of $e^\pm$ in the pulsar wind are crucial distinction among magnetosphere models, and contains key parameters determining the high energy emission of pulsar binaries.
Cheng, K. S., Yi, Shu-Xu
core +2 more sources