a Study of the Extended Emission around Bright Blazar Agn's

Computer Science

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Chandra Proposal Id #01700863

Scientific paper

We propose observations of two high redshift (z=0.8,z=1.8), powerful blazar AGN. The AGN are strong EGRET sources, with hard spectra extending to at least 10 GeV. If their emission extends significantly past 20 GeV, these AGN will be surrounded by X-ray halos produced by cascading of >20 GeV energy photons on diffuse IR/O background radiation. The halo structure depends on the local (high redshift) IR/O background and the intergalactic magnetic field. We will be able to map out the X-ray structure of these AGNs' radio jets (one of which shows bending) on scales directly comparable to VLA ones. We can also follow rapid variations in the blazar spectra, including (in one case) those at optical wavelengths. These blazars are likely in rich clusters, and we might detect cluster gas.

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