BROAD ABSORPTION LINE QUASARS

GT The targeted objects are selected from a list of BAL QSOs which are knownto be weak in soft xrays but which are good candidates for having strong emission at higher energies. The main aims of the program are to:(i) determine their xray properties up to 10 keV in order to show whetherthey are absorbed or altogether weakand (ii) to determine whether they are suitable for followup XMM observations. Massejecting BAL QSOs comprise 10% of the totalQSO population and these observations will put important constraintson the underlying mechanisms. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]