Time-dependent modelling of pulsar wind nebulae
M.J. Vorster, O. Tibolla, S.E.S. Ferreira, and S. Kaufmann
TL;DR
This paper introduces a time-dependent, spherically symmetric model to simulate the evolution of electron and positron spectra in pulsar wind nebulae, applied to specific nebulae and TeV sources.
Contribution
It presents a novel spatially-independent model for the temporal evolution of pulsar wind nebulae, aiding in identifying unidentified TeV sources as evolved nebulae.
Findings
Model successfully applied to G21.5-0.9 and unidentified TeV sources.
Supports the hypothesis that some unidentified sources are evolved pulsar wind nebulae.
Derived parameters align with characteristics of known nebulae.
Abstract
A spatially-independent model that can be used to calculate the temporal evolution of the electron/ positron spectrum in a spherically expanding pulsar wind nebula is presented. The model is applied to the young nebula G21.5-0.9, as well as to the unidentified TeV sources HESS J1427-608 and HESS J1507-622. The parameters derived from the model strengthens the idea that the unidentified sources can be identified as evolved pulsar wind nebulae.
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Taxonomy
TopicsGeophysics and Gravity Measurements · Pulsars and Gravitational Waves Research · Astronomical Observations and Instrumentation