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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- Osun State College of Education, Ila-Orangun(Aff To Ekiti State Uni), Osun State 1
- Osun State College of Education, Ilesa, Osun State. (affl To Univ of Ibadan) 2
- Osun State Polytechnic, Iree, Osun State 467
- Osun State University, Osogbo, Osun State 11
- Our Saviour Institute of Science and Technology (polytechnic) Enugu, Enugu State 1
- PAN-ATLANTIC UNIVERSITY, KM 52 LEKKI-EPE EXPRESSWAY, IBEJU-LEKKI, LAGOS STATE. 14
- Paul University, Awka, Anambra State 2
- Petroleum Training Institute, Effurun, Delta State 1
- Precious Cornerstone University, Ibadan, Oyo State 1
- Prince Abubakar Audu University, Anyigba 30