World Library  
Flag as Inappropriate
Email this Article

Plage (astronomy)

Article Id: WHEBN0005200104
Reproduction Date:

Title: Plage (astronomy)  
Author: World Heritage Encyclopedia
Language: English
Subject: Sun, Chromosphere, Corona, Helmet streamer, Coronal hole
Collection: Solar Phenomena, Stellar Astronomy, Stellar Phenomena, Sun
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Plage (astronomy)

A plage is a bright region in the chromosphere of the Sun, typically found in regions of the chromosphere near sunspots. The term itself is poetically taken from the French word for "beach". The plage regions map closely to the faculae in the photosphere below, but the latter have much smaller spatial scales. Accordingly plage occurs most visibly near a sunspot region. Faculae have a strong influence on the solar constant, and the more readily detectable (because chromospheric) plage areas traditionally are used to monitor this influence. In this context "active network" consists of plage-like brightenings extending away from active regions as their magnetism appears to diffuse into the quiet Sun, but constrained to follow the network boundaries.

Because we can explain faculae with the strictly photospheric "hot wall" model,[1] it is not clear what the actual physical relationship between plage and faculae may be.

References

  1. ^ Topka, K. P.; Tarbell, T. D.; Title, A. M. (1997). "Properties of the Smallest Solar Magnetic Elements. II. Observations versus Hot Wall Models of Faculae". Astrophysical Journal 484 (1): 479–486.  

External links

  • Encyclopedia of Astrobiology, Astronomy & Spaceflight: Plage


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.