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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …