Eclipse Mapping of the Accretion Stream in UZ Fornacis

Details Eclipse Mapping of the Accretion Stream in UZ Fornacis Eclipse Mapping of the Accretion Stream in UZ Fornacis

1999-12-21

arxiv.org/abs/astro-ph/9912442v1

Astronomy and Astrophysics

Astrophysics

11 pages, 14 figures, accepted by Astronomy & Astrophysics

Scientific paper

We present a new method to map the surface brightness of the accretion streams in AM Herculis systems from observed light curves. Extensive tests of the algorithm show that it reliably reproduces the intensity distribution of the stream for data with a signal-to-noise ratio >5. As a first application, we map the accretion stream emission of Civ lambda 1550 in the polar UZ Fornacis using HST FOS high state spectra. We find three main emission regions along the accretion stream: (1) On the ballistic part of the accretion stream, (2) on the magnetically funneled stream near the primary accretion spot, and (3) on the magnetically funneled stream at a position above the stagnation region.

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