Do BL Lac Objects Wear X-Ray Halos?

Details Do BL Lac Objects Wear X-Ray Halos? Do BL Lac Objects Wear X-Ray Halos?

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..108l&link_type=abstract

Chandra Proposal ID #01700615

Computer Science

Chandra Proposal Id #01700615

Scientific paper

We propose to measure the fraction of X-ray flux in resolved vs. unresolved components for three representative BL Lacs: an LBL, an HBL and an intermediate object. These measurements will be used to test the assumptions of the two leading unified scheme models. If LBLs and HBLs differ by orientation, then the relativistic jets must be accelerating and the X-ray Doppler factors will be smaller than the radio Doppler factors for a given object. If the SED-based unified scheme is instead correct, then the X-ray and radio Doppler factors for a given object should be the same. In addition, we will obtain direct measurements of the diffuse X-ray luminosity which we will compare with exisiting measurements for FRI radio galaxies and evaluate the assumptions of the BL Lac/FRI unified scheme.

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