A plage /pleɪdʒ/ is a bright region in the Sun's chromosphere, typically found in and around active regions. Historically, they have been referred to as bright flocculi, in contrast to dark flocculi, and as chromospheric faculae, in contrast to photospheric faculae.[1]
- ^ Athay, R. Grant; Warwick, Constance S. (1961). "Indices of Solar Activity". In Landsberg, Helmut E.; Van Mieghem, J. (eds.). Advances in Geophysics. Vol. 8. Elsevier Science. p. 30. ISBN 9780080568362.