On Mar 12, 12:19*am, Hw@..(Henry Wilson DSc) wrote:
On Fri, 11 Mar 2011 15:08:00 -0800 (PST), Brad Guth wrote:
On Mar 10, 1:35 pm, Hw@..(Henry Wilson DSc) wrote:
They are ordinary stars that have a large orbiting planet.
Their light moves at c+vsin(t/T) towards Earth, causing the photon stream to
spatially bunch up and separate as it travels. This gives the impression of a
periodic brightness variation when it reaches an Earth observer.

For a complete discription of the process see:

http://www.scisite.info/The_new_ball..._of_light.html

Exactly correct, whereas a binary star such as having a brown dwarf or
a very large 16x Mj planet should make a good starshade as it orbits
through our line of sight. *Basically most stars have planets, at
least to start with.

and the planets cause the stars to wobble around a barycentre in a fairly small
orbit.
That is enough to cause photon bunching as their emitted light travels across
space.

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Sounds good to me. Imagine what a star would wobble if it had a
neutron binary partner, or even two identical stars in lock-step with
one another (especially when viewed on edge).

For a whole star to vary on it's own seems highly unlikely, if not
impossible.

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