Results 21 to 30 of about 13,607 (215)

A noise independent method of measuring sky location and chirp mass of gravitational waves single sources, using non-simultaneously timing of pulsars [PDF]

open access: green, 2013
We propose a new method to measure parameters of SMBHBs as individual resolvable evolving single GWs sources, using the timing data of three or more non-simultaneous pulsars. These parameters include the sky position of the SMBHB and a chirp mass-red shift combination M_c(1+z).
Shu-Xu Yi
openalex   +3 more sources

Measuring scattering variations in pulsar timing observations: a test of the fidelity of current methods

open access: goldMonthly Notices of the Royal Astronomical Society
ABSTRACT The turbulent nature of the ionized interstellar medium (IISM) causes dispersion measure (DM) and scattering variations in pulsar timing measurements. To improve precision of gravitational wave measurements, pulsar timing array (PTA) collaborations have begun the use of sophisticated and intricate noise modelling techniques ...
A.D. Kulkarni   +3 more
  +5 more sources

Coherent network analysis for continuous gravitational wave signals in a pulsar timing array: Pulsar phases as extrinsic parameters [PDF]

open access: yes, 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

Advanced pulsar timing methods : deep learning for the mitigation of radio frequency interferences and timing analysis of the relativistic binary system PSR J1528-3146

open access: green, 2023
Pulsars are rapidly-rotating and highly magnetized neutron stars with radio beams originating from the magnetic poles which sweep through space with each rotation of the star. This thesis focuses on the processing chain of radio observations of pulsars and on the exploitation of high precision timing data for the detailed study of the binary pulsar ...
A. Berthereau
openalex   +3 more sources

Searching for gravitational waves from the Crab pulsar - the problem of timing noise [PDF]

open access: yes, 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

Taming outliers in pulsar-timing datasets with hierarchical likelihoods and Hamiltonian sampling [PDF]

open access: yes, 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

A new time-domain estimation method for period of pulsars

open access: yesActa 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

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]

open access: yes, 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

Frequency-Dependent Template Profiles for High Precision Pulsar Timing [PDF]

open access: yes, 2018
Pulsar timing experiments require high fidelity template profiles in order to minimize the biases in pulse time-of-arrival (TOA) measurements and their uncertainties.
Pennucci, Timothy T.
core   +2 more sources

Detection and localization of continuous gravitational waves with pulsar timing arrays: the role of pulsar terms [PDF]

open access: yes, 2016
A pulsar timing array is a Galactic-scale detector of nanohertz gravitational waves (GWs). Its target signals contain two components: the `Earth term' and the `pulsar term' corresponding to GWs incident on the Earth and pulsar respectively.
Hobbs, George   +7 more
core   +3 more sources

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