A Method to Fit Phase Diagrams of Slow-Rotation Pulsars with Accretion Columns-Reference-Cited by-同舟云学术

A Method to Fit Phase Diagrams of Slow-Rotation Pulsars with Accretion Columns

Published:2023-01-16 Issue:1 Volume:11 Page:18
ISSN:2075-4434
Container-title:Galaxies
language:en
Short-container-title:Galaxies

Author:

Silva Rodrigo R.,de Lima Rafael C. R.^ORCID,Coelho Jaziel G.^ORCID,Stecchini Paulo E.,de Liz Caroline M.,de Araujo José C. N.^ORCID

Abstract

We demonstrate a method to simulate a pulse profile of the emission of accretion columns in a neutron star. Given a set of parameters that characterize the star, e.g., mass and radius, and the positions and shapes of the accretion columns, the pulse profile can be calculated and compared with real data. Some characteristics of phase diagrams are shown considering an accretion column in the form of a cone trunk and also in the form of a cylinder. Furthermore, in our first approach we develop a combination between a genetic algorithm and a Bayesian sampling algorithm to constrain some variables. Finally, as an example, we apply the method to observed data of source 1A 0535+262.

Funder

Fundação de Amparo à Pesquisa e Inovação do Estado de Santa Catarina

CNPq

FAPESP

NAPI “Fenômenos Extremos do Universo” of Fundação Araucária

PCI/INPE/CNPq

Publisher

MDPI AG

Subject

Astronomy and Astrophysics

Link

https://www.mdpi.com/2075-4434/11/1/18/pdf

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