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
We 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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- AVE-MARIA UNIVERSITY, PIYANKO, NASARAWA STATE 1
- Babcock University, Ilishan-Remo, Ogun State 7
- Bamidele Olumilua University of Edu. Science and Tech. Ikere Ekiti, Ekiti State 452
- Bauchi State College of Agriculture, Bauchi, Bauchi State 1
- Bauchi State University, Gadau, Bauchi State 16
- Bayelsa State Polytechnic, Aleibiri, Bayelsa State 13
- Bayero University, Kano, Kano State 582
- Benue State Polytechnic, Ugbokolo, Benue State 10
- Benue State University, Makurdi, Benue State 47
- Bingham University, Karu, Nasarawa State 3