Questions tagged [sunspots]

Questions regarding the darker areas on the solar disk formed by emerging magnetic fields.

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Can we see evidence of sunspots on other stars

Searching for exoplanets by measuring the change of a stars brightness when an exoplanet transits the star's disk also has the potential to detect exo-sunspots. Have they ever been detected?
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Could Tabby's star be beamed by a neutron star's jet causing irregular star spots?

There have been some other questions here about what might cause the light curve dips of star KIC 8462852 as observed by Kepler Space Telescope. Here's one I haven't heard before: Could it be that a ...
0
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0answers
21 views

For what kinds of solar research does observing a total eclipse during a sunspot minimum “reduce the amount of 'clutter'”?

The recent Wired.com article A Drone, a $12,000 Lens, and the Magic of a Total Solar Eclipse describes the author's photo session of the recent total solar eclipse at the Cerro Tololo Inter-American ...
4
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1answer
115 views

Is the longitude assigned to sunspots spherical or projected?

Sunspot maps are created from a projection of the sun, so the coordinates of sunspots (or active regions in general) are assigned according to it. Do these coordinates correspond to actual spherical ...