Mathematics – Metric Geometry
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5463h&link_type=abstract
HST Proposal ID #5463
Mathematics
Metric Geometry
Hst Proposal Id #5463 Quasars &Amp, Agn, Quasar
Scientific paper
Our ground-based spectropolarimetry shows that nearly half of a small sample of the most luminous IRAS AGN (L > 10^11(suns)) are highly polarized (up to 20%) and the polarization is strongly wavelength-dependent. For several we observe a typical QSO spectrum in polarized light, suggesting the axisymmetric geometry proposed for the lower luminosity AGNs like NGC 1068. We propose to use the high resolution capabilities of the WF2 CCD in WFPC2 to look for extended polarized emission in these objects, that would mark the location of the scatterers. The morphology of this region will allow us to constrain the scattering geometry. The presence of extended polarized emission in the highly polarized ultraluminous AGN dominated by narrow lines in the optical, would strongly imply that the polarized broad lines observed in these objects result from scattering, and that these objects would appear as typical luminous QSOs if viewed from the direction seen by the scattering region. In this way, our observations will be used to test orientation-dependent, unified schemes for high luminosity AGN (the QSOs).
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