Spatially resolved X-ray spectroscopy and modeling of the nonthermal emission of the pulsar wind nebula in G0.9+0.1

The authors performed a spatially resolved spectral X-ray study of the pulsar wind nebula (PWN) in the supernova remnant G0.9+0.1. Furthermore, they modeled its nonthermal emission in the X-ray and very high-energy gamma -ray regime. Using Chandra ACIS-S3 data, they investigated the east-west depend...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2012-03, Vol.539, p.1-1
Main Authors: Holler, M, Schock, F M, Eger, P, Kie beta ling, D, Valerius, K, Stegmann, C
Format: Article
Language:English
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Summary:The authors performed a spatially resolved spectral X-ray study of the pulsar wind nebula (PWN) in the supernova remnant G0.9+0.1. Furthermore, they modeled its nonthermal emission in the X-ray and very high-energy gamma -ray regime. Using Chandra ACIS-S3 data, they investigated the east-west dependence of the spectral properties of G0.9+0.1 by calculating hardness ratios. They analyzed the EPIC-MOS and EPIC-pn data of two on-axis observations of the XMM-Newton telescope and extracted spectra of four annulus-shaped regions, centered on the region of brightest emission of the source. A radially symmetric leptonic model was applied in order to reproduce the observed X-ray emission of the inner part of the PWN. The spectral index within the four annuli increases with growing distance to the pulsar, whereas the surface brightness drops. With the adopted model they are able to reproduce the characteristics of the X-ray spectra. The model results for the VHE gamma radiation, however, strongly deviate from the HESS data.
ISSN:0004-6361
1432-0746