Proposed Detection Methods
The existence of extrasolar moons around many exoplanets is theorized. Despite the great successes of planet hunters with Doppler spectroscopy of the host star, exomoons cannot be found with this technique. This is because the resultant shifted stellar spectra due to the presence of a planet plus additional satellites would behave identically to a single point-mass moving in orbit of the host star. In recognition of this, there have been several other methods proposed for detecting exomoons, including:
- Transit timing effects
- Direct imaging
- Transit method
- Microlensing
- Doppler spectroscopy of host planet
- Pulsar timing
Read more about this topic: Extrasolar Moon
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