Search for Radio Quiet BL Lacertae Objects

Details Search for Radio Quiet BL Lacertae Objects Search for Radio Quiet BL Lacertae Objects

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004mas..conf..311p&link_type=abstract

MULTIWAVELENGTH AGN SURVEYS. Proceedings of the Guillermo Haro Conference 2003. Held 8-12 December 2003 in Cozumel, Mexico. Edit

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the first results of radio and near infrared observations of a sample of objects discovered by the 2dF QSO redshift survey. This sample has 56 objects which exhibit a featureless optical continuum, a steep number-magnitude relation and lack detectable proper motions suggesting they are extragalactic and likely BL Lac objects. However, contrary to the vast majority of BL Lac these objects are not detected from radio or X-ray surveys. Based on our deep radio follow up observations many objects are fainter than 0.1 mJy at centimetre and 0.3 Jy at millimetre region. The optical-NIR photometry suggests that some objects have non-thermal continuum similar to BL Lacertae objects however some objects have a black body spectrum suggesting galactic DC white dwarf origin.

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