Chaos in pulsar spin dynamics

Berc Deruni*, Mustafa Dogan

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Özet

In the present paper, a new model describing neutron star dynamics is analysed. The system under consideration can be described as a modified vortex creep model. Two component model and the vortex creep model have been used successfully to describe post glitch relaxation phase. However, glitch behaviour is yet to be explained. There can be a possible stochastic mechanism that trigger glitches in neutron stars. To this aim, we propose a modification in the nonlinear vortex creep model. The significance of the modification is twofold, the dynamics of the system is able to generate intermittency, imitating the glitch behaviour of pulsars, and the system also show chaotic motion when the system parameters are set accordingly. The chaotic dynamics is verified by using nonlinear tools such as numerical phase portraits, Lyapunov exponents and bifurcation diagrams.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)199-203
Sayfa sayısı5
DergiIFAC-PapersOnLine
Hacim56
Basın numarası1
DOI'lar
Yayın durumuYayınlandı - 1 Oca 2023
Etkinlik12th IFAC Symposium on Nonlinear Control Systems, NOLCOS 2022 - Canberra, Australia
Süre: 4 Oca 20236 Oca 2023

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Copyright © 2023 The Authors.

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