Abstract
The term “stellar activity” is routinely used to characterize phenomena that are more energetic, brighter, time-variable or otherwise different from the normal behavior of a star. Stellar activity plays a central role in the evolution of exoplanet atmospheres, but the term is rarely defined or tied to underlying causes of active phenomena on stars. In this chapter, I will describe the different types of stellar activity whose underlying cause is heating and particle acceleration by magnetic processes.
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Notes
- 1.
Pasachoff and Suer (2010) present the history of this notation.
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Linsky, J. (2019). Stellar Activity–Phenomenology and General Principles. In: Host Stars and their Effects on Exoplanet Atmospheres . Lecture Notes in Physics, vol 955. Springer, Cham. https://doi.org/10.1007/978-3-030-11452-7_2
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