Contents of: VI/111/./abstract/PPADOVAN_JYBLAC_A.abs

The following document lists the file abstract/PPADOVAN_JYBLAC_A.abs from catalogue VI/111.
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 BL Lacertae objects are extreme examples of Active Galactic Nuclei
 whose  emission  is almost purely nonthermal and whose spectrum is
 generally modelled as synchrotron emission up to an energy cutoff,
 above  which  Inverse  Compton  emission probably dominates.  From
 studies of  their  multifrequency  energy  distribution,  BL  Lacs
 selected  in  the radio band are expected to have a spectral break
 in the mid to  far-infrared  band,  a  spectral  region  basically
 unexplored.   We  propose  to  study  in  a  systematic manner the
 infrared spectrum of the only complete sample of radio-selected BL
 Lacertae   objects,  the  1  Jy  sample,  and  fully  exploit  the
 sensitivity  and  large  bandpass  of  ISO  through   multi-filter
 photometry  between  3  and 180 microns with ISOCAM, ISOPHOT-P and
 ISOPHOT-C.  This will allow us to search for the synchrotron break
 in the energy distribution of radio-selected BL Lacs, an important
 feature for the understanding of the detailed mechanisms of energy
 production and other puzzling characteristics of BL Lacs.  We will
 also use the ISO observations for  statistical  studies,  such  as
 fill  the  infrared  gap  to complete the coverage of the spectral
 energy distribution of this unique and statistically  well-defined
 sample,   and   derive   the  bivariate  infrared  and  bolometric
 luminosity functions.  Finally, our results will be compared  with
 those  obtained  by  a  parallel  proposal  which  will  study the
 infrared properties of a sample of X-ray selected BL Lacs to  gain
 insight  into the intrinsic differences and/or similarities of the
 two classes.