On Strong P-Ṗ and Dm- Ṗ Correlations of Pulsars
Student: Stephanie Isioma Ossai (Project, 2025)
Department of Physics
University of Nigeria, Nsukka, Enugu State
Abstract
IWe have conducted a statistical analysis of a sample of 2064 pulsars with published values of dispersion measure, rotation period and period derivative. Our sample is heterogeneous, consisting of 1740 pulsars, 900 milliseconds pulsars and 138 magnetars. Scatter plots of period derivative (Ṗ) against period (P) reveals a positive trend for all the 2064 pulsars. Also, simple regression analysis of the data for the 2064 pulsars shows a strong correlation, (with correlation coefficient, r ~ 0.6) between the period derivative and period. This implies that pulsars with high spin down rate (Ṗ) are associated with high rotation period (P). Similarly, scatter plot of dispersion measure (DM) against the period derivative (Ṗ), shows a positive relationship between them with a very strong correlation (r ~ 0.8). This implies that pulsars with large spin down rates are associated with large dispersion measure.
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For the full publication, please contact the author directly at: isiomaossai54@gmail.com
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- Isa Mustapha Agwai I Polytechnic, Lafia, Nasarawa State 2
- Jigawa State Polytechnic, Dutse, Jigawa State 4
- Joseph Sarwuan Tarka University, Makurdi, Benue State 17
- Kaduna Polytechnic (NCE), Kaduna, Kaduna State 2
- Kaduna Polytechnic, Kaduna 328
- Kaduna Polytechnic, Kaduna , Kaduna State (affl To Fed Univ of Tech, Minna) 6
- Kaduna State College of Education, Gidan-Waya (affliatted To Abu) 2
- Kaduna State University, Kaduna, Kaduna State 246
- Kano State Polytechnic, Kano, Kano State 196
- Kano University of Science and Technology, Wudil, Kano State 6