Spectral modelling of a H.E.S.S.-detected pulsar wind nebula
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Date
2015Author
Van Rensburg, Carlo
Krüger, Paulus
Venter, Christo
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In the last decade ground-based Imaging Atmospheric Cherenkov Telescopes have
discovered roughly 30 pulsar wind nebulae at energies above 100 GeV. We present first results
from a leptonic emission code that models the spectral energy density of a pulsar wind nebula by
solving the Fokker-Planck transport equation and calculating inverse Compton and synchrotron
emissivities. Although models such as these have been developed before, most of them model the
geometry of a pulsar wind nebula as that of a single sphere. We have created a time-dependent,
multi-zone model to investigate changes in the particle spectrum as the particles diffuse through
the pulsar wind nebula, as well as predict the radiation spectrum at different positions in the
nebula. We calibrate our new model against a more basic previous model and fit the observed
spectrum of G0.9+0.1, incorporating data from the High Energy Stereoscopic System as well
as radio and X-ray experiments
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http://hdl.handle.net/10394/32123http://events.saip.org.za/getFile.py/access?resId=65&materialId=6&confId=34