Deconvolving Pulsar Signals with Cyclic Spectroscopy: A Systematic Evaluation

Abstract

Radio pulsar signals are significantly perturbed by their propagation through the ionized interstellar medium. In addition to the frequency-dependent pulse times of arrival due to dispersion, pulse shapes are also distorted and shifted, having been scattered by the inhomogeneous interstellar plasma, affecting pulse arrival times. Understanding the degree to which scattering affects pulsar timing is important for gravitational wave detection with pulsar timing arrays (PTAs), which depend on the reliability of pulsars as stable clocks with an uncertainty of ~100ns or less over ~10yr or more. Scattering can be described as a convolution of the intrinsic pulse shape with an impulse response function representing the effects of multipath propagation. In previous studies, the technique of cyclic spectroscopy has been applied to pulsar signals to deconvolve the effects of scattering from the original emitted signals. We present an analysis of simulated data to test the quality of deconvolution using cyclic spectroscopy over a range of parameters characterizing interstellar scattering and pulsar signal-to-noise ratio. We show that cyclic spectroscopy is most effective for high-S/N and/or highly scattered pulsars. We conclude that cyclic spectroscopy could play an important role in scattering correction to distant populations of highly scattered pulsars not currently included in PTAs. For future telescopes and for current instruments such as the Green Bank Telescope upgraded with the ultrawide bandwidth (UWB) receiver, cyclic spectroscopy could potentially double the number of PTA-quality pulsars.

arXiv comment21 pages, 10 figures. Typo fixed, conclusions unchanged. Accepted for publication in ApJ

References in corpus (50)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• The international pulsar timing array project: using pulsars as a gravitational wave detector
• DSPSR: Digital Signal Processing Software for Pulsar Astronomy
• The Parkes Pulsar Timing Array Project
• The North American Nanohertz Observatory for Gravitational Waves
• The NANOGrav 11-year Data Set: Pulsar-timing Constraints On The Stochastic Gravitational-wave Background
• Multifrequency Observations of Radio Pulse Broadening and Constraints on Interstellar Electron Density Microstructure
• The characteristics of millisecond pulsar emission: I. Spectra, pulse shapes and the beaming fraction
• The International Pulsar Timing Array
• The stochastic background: scaling laws and time to detection for pulsar timing arrays
• Canadian Hydrogen Intensity Mapping Experiment (CHIME) Pathfinder
• The Parkes Pulsar Timing Array
• Faint Scattering Around Pulsars: Probing the Interstellar Medium on Solar System Size Scales
• The NANOGrav 12.5 yr Data Set: Observations and Narrowband Timing of 47 Millisecond Pulsars
• Theory of Parabolic Arcs in Interstellar Scintillation Spectra
• Pulsars as Tools for Fundamental Physics and Astrophysics
• Frequency-Dependent Dispersion Measures and Implications for Pulsar Timing
• The NANOGrav 12.5-year Data Set: Wideband Timing of 47 Millisecond Pulsars
• PsrPopPy: An open-source package for pulsar population simulations
• The NANOGrav Nine-Year Data Set: Excess Noise in Millisecond Pulsar Arrival Times
• Detection, Localization and Characterization of Gravitational Wave Bursts in a Pulsar Timing Array
• Scattering analysis of LOFAR pulsar observations
• Pulsar Observations Using the First Station of the Long Wavelength Array and the LWA Pulsar Data Archive
• The NANOGrav Nine-year Data Set: Monitoring Interstellar Scattering Delays
• Cyclic Spectral Analysis of Radio Pulsars
• A Second Chromatic Timing Event of Interstellar Origin toward PSR J1713+0747
• The NANOGrav Nine-Year Data Set: Noise Budget for Pulsar Arrival Times on Intraday Timescales
• Scattering of pulsar radio emission by the interstellar plasma
• {Interstellar Plasma Weather Effects in Long-term Multi-frequency Timing of Pulsar B1937+21
• Exploring the Transient Radio Sky with VLITE: Early Results
• A Fast Radio Burst with frequency-dependent polarization detected during Breakthrough Listen observations
• A 24-Hour Global Campaign To Assess Precision Timing of the Millisecond Pulsar J1713+0747
• The NANOGrav 12.5-Year Data Set: The Frequency Dependence of Pulse Jitter in Precision Millisecond Pulsars
• Cyclic spectroscopy of The Millisecond Pulsar, B1937+21
• Interstellar Holography
• Optimal Frequency Ranges for Sub-Microsecond Precision Pulsar Timing
• Effects of the ISM on Detection of Low-frequency Gravitational Waves
• Faraday rotation measures of northern-hemisphere pulsars using CHIME/Pulsar
• The frequency dependence of scattering imprints on pulsar observations
• Scattering study of Pulsars below 100 MHz using LWA1
• Electric field representation of pulsar intensity spectra
• Millisecond Pulsar Scintillation Studies with LOFAR: Initial Results
• The Frequency Dependence of Scintillation Arc Thickness in Pulsar B1133+16
• Correcting for Interstellar Scattering Delay in High-precision Pulsar Timing: Simulation Results
• Discovery of a Pulsar Wind Nebula around B0950+08 with the ELWA
• The Swarm Telescope Concept
• A Next Generation Low Band Observatory: A Community Study Exploring Low Frequency Options for ngVLA
• Twelve Decades: Probing the Interstellar Medium from kiloparsec to sub-AU scales
• Noise Budget and Interstellar Medium Mitigation Advances in the NANOGrav Pulsar Timing Array
• Science with the Next-Generation VLA and Pulsar Timing Arrays

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• Measuring Interstellar Delays of PSR J0613-0200 over 7 years, using the Large European Array for Pulsars
• Pulsar scintillation studies with LOFAR. I. The census
• Parameter estimation of a two-component neutron star model with spin wandering
• Status Report on Global Pulsar-Timing-Array Efforts to Detect Gravitational Waves
• Profile changes associated with DM events in PSR J1713+0747
• A Cyclic Spectroscopy Scintillation Study of PSR B1937+21 I. Demonstration of Improved Scintillometry
• Scattering Delay Mitigation in High Accuracy Pulsar Timing: Cyclic Spectroscopy Techniques
• H-FISTA: A hierarchical algorithm for phase retrieval with application to pulsar dynamic spectra
• Reducing instrumental errors in Parkes Pulsar Timing Array data
• Pulsar Cyclic Spectroscopy in the Partial-Deconvolution Regime: Benefits & Limitations
• The NANOGrav 15 yr Data Set: Customized Chromatic Noise Models
• Constraining Scattering Medium Geometry with Cyclic Spectroscopy