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
Detection and localization of continuous gravitational waves with pulsar timing arrays: the role of pulsar terms [PDF]
, 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
Pulsar time delay estimation method based on two-level compressed sensing
Acta Physica Sinica, 2018 In the traditional compressed sensing algorithms, the precision of the time delay estimation is closely related to the number of atoms in the dictionary. The bigger the atom number, the smaller the atomic interval becomes, thus the higher the accuracy of the time delay estimation will be.
null Kang Zhi-Wei +4 more
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]
, 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
An evidence based time-frequency search method for gravitational waves from pulsar glitches
Journal of Physics: Conference Series, 2008 We review and expand on a Bayesian model selection technique for the detection of gravitational waves from neutron star ring-downs associated with pulsar glitches. The algorithm works with power spectral densities constructed from overlapping time segments of gravitational wave data.
Clark, J. +3 more
openaire +2 more sources
Frequency-Dependent Template Profiles for High Precision Pulsar Timing [PDF]
, 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
Observing gravitational wave bursts in pulsar timing measurements
, 2010 We propose a novel method for observing the gravitational wave signature of super-massive black hole (SMBH) mergers. This method is based on detection of a specific type of gravitational waves, namely gravitational wave burst with memory (BWM), using ...
Baskaran +42 more
core +1 more source
Generative pulsar timing analysis
, 2015 A new Bayesian method for the analysis of folded pulsar timing data is presented that allows for the simultaneous evaluation of evolution in the pulse profile in either frequency or time, along with the timing model and additional stochastic processes ...
Alexander, P., Hobson, M. P., Lentati, L
core +1 more source
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
Pulsar Timing with the Fermi LAT
, 2010 We present an overview of precise pulsar timing using data from the Large Area Telescope (LAT) on Fermi. We describe the analysis techniques including a maximum likelihood method for determining pulse times of arrival from unbinned photon data.
Kerr, Matthew +3 more
core +1 more source