On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars

Evaristus Uzochukwu Iyida; Christian Ikechukwu Eze; Innocent Okwudili Eya; Augustine Ejikeme Chukwude

doi:doi:10.11648/j.ijass.20180606.12

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On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars

Evaristus Uzochukwu Iyida, Christian Ikechukwu Eze, Innocent Okwudili Eya, Augustine Ejikeme Chukwude

Published in International Journal of Astrophysics and Space Science (Volume 6, Issue 6)

Received: 3 November 2018 Accepted: 22 November 2018 Published: 13 January 2019

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Abstract

Detailed investigation of improved timing observations has shown that the spin properties of a large population of rotation-powered pulsars on a varied range of timescales are strongly dominated by random ﬂuctuations. Even though, there is no widely accepted way to characterize timing noise in these pulsars mainly due to the enormous complexity in their structure and true dynamical behavior, the measurements of these pulsar spin properties are essential for extracting important information about their spin down evolution. In this paper, a statistical analysis of a large sample of Jodrell Bank Observatory (JBO) radio pulsars with improved and published data on stability parameters (∆₈) and other quantities that are used to parameterize pulsar rotational fluctuations on observation timescales [timing noise activity parameter A, timing noise statistic (σ₂₃) and pulsar clock stability parameter σ_Z (T)] was compiled for an in-depth characterization of the spin-down evolution of rotation-powered pulsars. The existence of any relationship will go a long way in helping us probe the properties and dynamics of a neutron star. The results of our analysis reveal that radio pulsar spin-down parameters are reasonably coupled to timing noise activity. A simple regression analysis of our data show that timing irregularities in pulsar is more than 75% correlated with the magnitude of pulsar spin-down variables. The implications of the result of the improved measurements of the key parameters characterizing the spin-down of pulsars on long timescales are discussed.

Published in	International Journal of Astrophysics and Space Science (Volume 6, Issue 6)
DOI	10.11648/j.ijass.20180606.12
Page(s)	101-107
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Methods: Statistical, Stars: Neutron, Pulsars: General

References

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Evaristus Uzochukwu Iyida, Christian Ikechukwu Eze, Innocent Okwudili Eya, Augustine Ejikeme Chukwude. (2019). On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars. International Journal of Astrophysics and Space Science, 6(6), 101-107. https://doi.org/10.11648/j.ijass.20180606.12

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ACS Style

Evaristus Uzochukwu Iyida; Christian Ikechukwu Eze; Innocent Okwudili Eya; Augustine Ejikeme Chukwude. On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars. Int. J. Astrophys. Space Sci. 2019, 6(6), 101-107. doi: 10.11648/j.ijass.20180606.12

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AMA Style

Evaristus Uzochukwu Iyida, Christian Ikechukwu Eze, Innocent Okwudili Eya, Augustine Ejikeme Chukwude. On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars. Int J Astrophys Space Sci. 2019;6(6):101-107. doi: 10.11648/j.ijass.20180606.12

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@article{10.11648/j.ijass.20180606.12,
  author = {Evaristus Uzochukwu Iyida and Christian Ikechukwu Eze and Innocent Okwudili Eya and Augustine Ejikeme Chukwude},
  title = {On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars},
  journal = {International Journal of Astrophysics and Space Science},
  volume = {6},
  number = {6},
  pages = {101-107},
  doi = {10.11648/j.ijass.20180606.12},
  url = {https://doi.org/10.11648/j.ijass.20180606.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijass.20180606.12},
  abstract = {Detailed investigation of improved timing observations has shown that the spin properties of a large population of rotation-powered pulsars on a varied range of timescales are strongly dominated by random ﬂuctuations. Even though, there is no widely accepted way to characterize timing noise in these pulsars mainly due to the enormous complexity in their structure and true dynamical behavior, the measurements of these pulsar spin properties are essential for extracting important information about their spin down evolution. In this paper, a statistical analysis of a large sample of Jodrell Bank Observatory (JBO) radio pulsars with improved and published data on stability parameters (∆8) and other quantities that are used to parameterize pulsar rotational fluctuations on observation timescales [timing noise activity parameter A, timing noise statistic (σ23) and pulsar clock stability parameter σZ (T)] was compiled for an in-depth characterization of the spin-down evolution of rotation-powered pulsars. The existence of any relationship will go a long way in helping us probe the properties and dynamics of a neutron star. The results of our analysis reveal that radio pulsar spin-down parameters are reasonably coupled to timing noise activity. A simple regression analysis of our data show that timing irregularities in pulsar is more than 75% correlated with the magnitude of pulsar spin-down variables. The implications of the result of the improved measurements of the key parameters characterizing the spin-down of pulsars on long timescales are discussed.},
 year = {2019}
}

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TY  - JOUR
T1  - On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars
AU  - Evaristus Uzochukwu Iyida
AU  - Christian Ikechukwu Eze
AU  - Innocent Okwudili Eya
AU  - Augustine Ejikeme Chukwude
Y1  - 2019/01/13
PY  - 2019
N1  - https://doi.org/10.11648/j.ijass.20180606.12
DO  - 10.11648/j.ijass.20180606.12
T2  - International Journal of Astrophysics and Space Science
JF  - International Journal of Astrophysics and Space Science
JO  - International Journal of Astrophysics and Space Science
SP  - 101
EP  - 107
PB  - Science Publishing Group
SN  - 2376-7022
UR  - https://doi.org/10.11648/j.ijass.20180606.12
AB  - Detailed investigation of improved timing observations has shown that the spin properties of a large population of rotation-powered pulsars on a varied range of timescales are strongly dominated by random ﬂuctuations. Even though, there is no widely accepted way to characterize timing noise in these pulsars mainly due to the enormous complexity in their structure and true dynamical behavior, the measurements of these pulsar spin properties are essential for extracting important information about their spin down evolution. In this paper, a statistical analysis of a large sample of Jodrell Bank Observatory (JBO) radio pulsars with improved and published data on stability parameters (∆8) and other quantities that are used to parameterize pulsar rotational fluctuations on observation timescales [timing noise activity parameter A, timing noise statistic (σ23) and pulsar clock stability parameter σZ (T)] was compiled for an in-depth characterization of the spin-down evolution of rotation-powered pulsars. The existence of any relationship will go a long way in helping us probe the properties and dynamics of a neutron star. The results of our analysis reveal that radio pulsar spin-down parameters are reasonably coupled to timing noise activity. A simple regression analysis of our data show that timing irregularities in pulsar is more than 75% correlated with the magnitude of pulsar spin-down variables. The implications of the result of the improved measurements of the key parameters characterizing the spin-down of pulsars on long timescales are discussed.
VL  - 6
IS  - 6
ER  -

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Author Information

Evaristus Uzochukwu Iyida

Department of Physics and Astronomy, Faculty of Physical Sciences, University of Nigeria, Nsukka, Nigeria
Christian Ikechukwu Eze

Department of Physics and Astronomy, Faculty of Physical Sciences, University of Nigeria, Nsukka, Nigeria
Innocent Okwudili Eya

Department of Science Laboratory Technology, Faculty of Physical sciences, University of Nigeria, Nsukka, Nigeria
Augustine Ejikeme Chukwude

Department of Physics and Astronomy, Faculty of Physical Sciences, University of Nigeria, Nsukka, Nigeria

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Evaristus Uzochukwu Iyida, Christian Ikechukwu Eze, Innocent Okwudili Eya, Augustine Ejikeme Chukwude. (2019). On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars. International Journal of Astrophysics and Space Science, 6(6), 101-107. https://doi.org/10.11648/j.ijass.20180606.12

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ACS Style

Evaristus Uzochukwu Iyida; Christian Ikechukwu Eze; Innocent Okwudili Eya; Augustine Ejikeme Chukwude. On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars. Int. J. Astrophys. Space Sci. 2019, 6(6), 101-107. doi: 10.11648/j.ijass.20180606.12

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AMA Style

Evaristus Uzochukwu Iyida, Christian Ikechukwu Eze, Innocent Okwudili Eya, Augustine Ejikeme Chukwude. On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars. Int J Astrophys Space Sci. 2019;6(6):101-107. doi: 10.11648/j.ijass.20180606.12

Copy | Download

@article{10.11648/j.ijass.20180606.12,
  author = {Evaristus Uzochukwu Iyida and Christian Ikechukwu Eze and Innocent Okwudili Eya and Augustine Ejikeme Chukwude},
  title = {On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars},
  journal = {International Journal of Astrophysics and Space Science},
  volume = {6},
  number = {6},
  pages = {101-107},
  doi = {10.11648/j.ijass.20180606.12},
  url = {https://doi.org/10.11648/j.ijass.20180606.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijass.20180606.12},
  abstract = {Detailed investigation of improved timing observations has shown that the spin properties of a large population of rotation-powered pulsars on a varied range of timescales are strongly dominated by random ﬂuctuations. Even though, there is no widely accepted way to characterize timing noise in these pulsars mainly due to the enormous complexity in their structure and true dynamical behavior, the measurements of these pulsar spin properties are essential for extracting important information about their spin down evolution. In this paper, a statistical analysis of a large sample of Jodrell Bank Observatory (JBO) radio pulsars with improved and published data on stability parameters (∆8) and other quantities that are used to parameterize pulsar rotational fluctuations on observation timescales [timing noise activity parameter A, timing noise statistic (σ23) and pulsar clock stability parameter σZ (T)] was compiled for an in-depth characterization of the spin-down evolution of rotation-powered pulsars. The existence of any relationship will go a long way in helping us probe the properties and dynamics of a neutron star. The results of our analysis reveal that radio pulsar spin-down parameters are reasonably coupled to timing noise activity. A simple regression analysis of our data show that timing irregularities in pulsar is more than 75% correlated with the magnitude of pulsar spin-down variables. The implications of the result of the improved measurements of the key parameters characterizing the spin-down of pulsars on long timescales are discussed.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars
AU  - Evaristus Uzochukwu Iyida
AU  - Christian Ikechukwu Eze
AU  - Innocent Okwudili Eya
AU  - Augustine Ejikeme Chukwude
Y1  - 2019/01/13
PY  - 2019
N1  - https://doi.org/10.11648/j.ijass.20180606.12
DO  - 10.11648/j.ijass.20180606.12
T2  - International Journal of Astrophysics and Space Science
JF  - International Journal of Astrophysics and Space Science
JO  - International Journal of Astrophysics and Space Science
SP  - 101
EP  - 107
PB  - Science Publishing Group
SN  - 2376-7022
UR  - https://doi.org/10.11648/j.ijass.20180606.12
AB  - Detailed investigation of improved timing observations has shown that the spin properties of a large population of rotation-powered pulsars on a varied range of timescales are strongly dominated by random ﬂuctuations. Even though, there is no widely accepted way to characterize timing noise in these pulsars mainly due to the enormous complexity in their structure and true dynamical behavior, the measurements of these pulsar spin properties are essential for extracting important information about their spin down evolution. In this paper, a statistical analysis of a large sample of Jodrell Bank Observatory (JBO) radio pulsars with improved and published data on stability parameters (∆8) and other quantities that are used to parameterize pulsar rotational fluctuations on observation timescales [timing noise activity parameter A, timing noise statistic (σ23) and pulsar clock stability parameter σZ (T)] was compiled for an in-depth characterization of the spin-down evolution of rotation-powered pulsars. The existence of any relationship will go a long way in helping us probe the properties and dynamics of a neutron star. The results of our analysis reveal that radio pulsar spin-down parameters are reasonably coupled to timing noise activity. A simple regression analysis of our data show that timing irregularities in pulsar is more than 75% correlated with the magnitude of pulsar spin-down variables. The implications of the result of the improved measurements of the key parameters characterizing the spin-down of pulsars on long timescales are discussed.
VL  - 6
IS  - 6
ER  -

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