Hidden BL Lacertae Objects Near and Far
Abstract
Description
I describe two difficulties with current research into the cosmic evolution of BL Lacertae Objects: (1). Possible sample incompleteness due to unrecognized (i.e., ``hidden'') BL Lacs; and (2). The absence of a viable physical model of the evolution, to which current and future observations can be compared.
6 pages, invited talk at STScI ASP Conf. Series "Blazar Demographics" conf. proc. ed. P. Padovani & C.M. Urry
6 pages, invited talk at STScI ASP Conf. Series "Blazar Demographics" conf. proc. ed. P. Padovani & C.M. Urry