EX Hya

EX Hya is a well-known Intermediate Polar CV - that is, it has a strong magnetic field but one that is not strong enough to either disrupt the accretion disk or lock the spin and the orbital rotation of the system.  We choose to observe this system because it is so well-studied already (https://asd.gsfc.nasa.gov/Koji.Mukai/iphome/systems/exhya.html), and would therefore serve as a good test for our analysis routines. The orbital period is 1.638 hr, and has been seen in both the optical and X-ray bands. The spin period of the white dwarf is 67 min, and has been seen in many optical and X-ray observations.








The amount of data collected on this source was significantly less, as can be seen from the image at left. However, we are reasonably confident we can pick out the spin period using Peranso - although not the orbital period.

The measured period of 1.06762 h was seen in multiple searches (LS, ANOVA, DCDFT, CLEANest), and the phase plot is reasonably convincing. Similar results were found for the VStar implementation of DCDFT.

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