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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Institutions
- Adeseun Ogundoyin Polytechnic, Eruwa, Oyo State 1
- Adeyemi College of Education, Ondo State. (affl To Oau, Ile-Ife) 68
- Ahmadu Bello University, Zaria, Kaduna State 101
- Air Force Institute of Technology (Degree), Kaduna, Kaduna State 11
- Air Force Institute of Technology, Kaduna, Kaduna State 2
- Akanu Ibiam Federal Polytechnic, Unwana, Afikpo, Ebonyi State 6
- Akwa Ibom State University, Ikot-Akpaden, Akwa Ibom State 52
- Akwa Ibom State College of Edu, Afaha-Nsit (Affl To Uni Uyo), Akwa Ibom State 2
- AKWA-IBOM STATE POLYTECHNIC (IEI), IKOT-OSURUA, AKWA IBOM STATE 41
- Akwa-Ibom State Polytechnic, Ikot-Osurua, Akwa Ibom State 32