X‐Ray Variability of the Magnetic Cataclysmic Variable V1432 Aquilae and the Seyfert Galaxy NGC 6814

V1432 Aquilae (=RX J1940.2-1025) is the X-ray bright, eclipsing magneticcataclysmic variable ~37' away from the Seyfert galaxy, NGC 6814. Due to a 0.3%difference between the orbital (12116.3 s) and the spin (12150 s) periods, theaccretion geometry changes over the ~50 day beat period. Here we report theresults of an RXTE campaign to observe the eclipse 25 times, as well as ofarchival observations with ASCA and BeppoSAX. Having confirmed that the eclipseis indeed caused by the secondary, we use the eclipse timings and profiles tomap the accretion geometry as a function of the beat phase. We find that theaccretion region is compact, and that it moves relative to the center of whitedwarf on the beat period. The amplitude of this movement suggest a low-masswhite dwarf, in contrast to the high mass previously estimated from its X-rayspectrum. The size of the X-ray emission region appears to be larger than inother eclipsing magnetic CVs. We also report on the RXTE data as well as thelong-term behavior of NGC 6814, indicating flux variability by a factor of atleast 10 on time scales of years.Comment: 44 pages including 16 figures; ApJ, in pres