Publications

The Nature of BL Lacs

M.T.Whiting, 2005; in proceedings of "Multiband Approach to AGN", a meeting held in Bonn, Sept 30 - Oct 2, 2004; Memorie della Societa Astronomica Italiana, vol 76, 61-64.

The BL Lacertae objects, or BL Lacs, have multi-wavelength continua dominated by non-thermal emission from a relativistic jet, and are characterised by a lack of optical emission lines. We find, through observations and modelling that the dominant factor in a source being called a BL Lac is the intrinsic lack of flux from the broad-line region -- likely connected with a weak accretion disc -- rather than an overwhelmingly powerful jet. This has important implications for the nature of the accretion flow in these objects.

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Matthew Whiting
Address:
Australia Telescope National Facility
PO Box 76, Epping,
NSW 1710,
Australia
Email:
Matthew.Whiting <at> csiro.au
ph: +61-2-9372-4683
fax: +61-2-9372-4444
Location:
You can now find me in room 99 at Epping.

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