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| Paper: |
Investigating AM Her Cataclysmic Variables
with the Optical Pulsar Timing Analyzer — OPTIMA |
| Volume: |
469, 18th European White Dwarf Workshop (EUROWD12) |
| Page: |
363 |
| Authors: |
Slowikowska, A.; Goździewski, K.; Nasiroglu, I.; Kanbach, G.; Rau, A.; Krzeszowski, K. |
| Abstract: |
We focus on short–period eclipsing binaries that belong to a class of
Cataclysmic Variables (CVs). They are known as polars and intermediate
polars, closely resembling their prototype AM Herculis. These binaries
consist of a red dwarf and a strongly magnetic white dwarf, having orbital
periods of only a few hours. Monitoring eclipses of these typically
faint sources demands high-time resolution photometry. We describe
the very recent results obtained for two CVs, HU Aqr and DQ Her, which were
observed with the Optical Pulsar Timing Analyzer (OPTIMA). The new
observations of HU Aqr confirm that the O–C (Observed minus Calculated)
diagrams exhibit variations known for this binary which can be explained
by a single, massive Jupiter–like planet, possibly accompanied by
a very distant companion. |
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