Identifying the Polarized Seyfert 1 Mirror in Markarian 463

Physics

Scientific paper

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Hst Proposal Id #5960 Agn

Scientific paper

Markarian 463 is a Seyfert 2 galaxy that shows a Seyfert 1 spectrum when viewed in polarized light (Miller & Goodrich 1990). One explanation is that light from an obscured Seyfert 1 is scattered into our line of sight (and polarized in the process) by material with a clear view of the nucleus. The nucleus of Mkn 463 is unresolved from the ground but HST/PC images (Uomoto et al. 1993) reveal a bright, subarcsec optical jet extending south of the nucleus. This jet is composed of a string of unresolved knots, some of which are likely to be the reflecting material. We propose using the FOC to obtain near UV images in polarized light to locate the scattering site. By combining this UV polarization information with existing ground based data we will determine the physical nature of the mirror by distinguishing between dust or electron scattering as the reflection mechanism. This proposal was awarded time in Cycle 3, but only an early acquisition image was taken.

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