Apparent dispersion in pulsar braking index measurements caused by timing noise

AF Vargas, A Melatos - Monthly Notices of the Royal …, 2023 - academic.oup.com
Stochastic temporal wandering of the spin frequency ν of a rotation-powered pulsar (ie the
achromatic component of timing noise unrelated to interstellar propagation) affects the …

Monotonic and cyclic components of radio pulsar spin-down

A Biryukov, G Beskin, S Karpov - Monthly Notices of the Royal …, 2012 - academic.oup.com
In this article we revise the problem of anomalous values of pulsar braking indices n obs and
frequency second derivatives arising in observations. The intrinsic evolutionary braking is …

A statistical analysis of radio pulsar timing noise

AE Chukwude - Chinese Journal of Astronomy and Astrophysics, 2007 - iopscience.iop.org
We present an analysis of the timing observations on 27 radio pulsars, collected at
Hartebeesthoek Radio Astronomy Observatory (HartRAO), with time spans ranging …

Measurements of radio pulsar braking indices

AE Chukwude, AA Baiden, CC Onuchukwu - Astronomy & Astrophysics, 2010 - aanda.org
A quantitative analysis of radio pulsar timing noise is presented. Our analysis employs the
recently reported strong correlation (with correlation coefficient r= 0.95) between the …

Comparative analysis of the parameters of pulsars with braking indices and

CC Onuchukwu, E Legahara - Astrophysics and Space Science, 2024 - Springer
We analyzed the timing parameters (the rotational frequency\(\nu\), the first\(\left (\dot
{\nu}\right)\) and second\(\left (\ddot {\nu}\right)\) time-derivatives of frequency) and the …

DUAL SPIN-DOWN STATES OF THE PULSAR J1001–5507

AE Chukwude, S Buchner - The Astrophysical Journal, 2011 - iopscience.iop.org
Quasi-regular timing observations obtained, using the 26 m Hartebeesthoek Radio
Astronomy Observatory radiotelescope near center frequencies of 1.668 and 2.272 GHz …

Evidence of long-term cyclic evolution of radio pulsar periods

A Biryukov, G Beskin, S Karpov, L Chmyreva - Advances in Space …, 2007 - Elsevier
The measurements of pulsar frequency second derivatives have shown that they are 102–
106 times larger than expected for standard pulsar spin-down law. Moreover, the second …

Detecting and Modeling Neutron Stars Glitches with Bayesian Techniques

Y Liu - 2024 - search.proquest.com
Glitches are sudden, sharp increases in the spin frequencies of pulsars. A fraction of this
change is recovered in subsequent relaxation, sometimes consists of exponential transients …

Modeling the evolution and distribution of the frequency's second derivative and the braking index of pulsar spin

Y Xie, SN Zhang, JY Liao - Research in Astronomy and …, 2015 - iopscience.iop.org
We model the evolution of the spin frequency's second derivative v̈ and the braking index n
of radio pulsars with simulations within the phenomenological model of their surface …

Assessing the effects of timing irregularities on radio pulsars anomalous braking indices

AE Chukwude, FC Odo - Research in Astronomy and …, 2016 - iopscience.iop.org
We investigate the statistical effects of non-discrete timing irregularities on observed radio
pulsar braking indices using correlations between the second derivative of the measured …