HR: 10:30h
AN: SH52A-01 INVITED     [Abstracts]
TI: From the Inside of the Sun to its Atmosphere
AU: * Bogdan, T J
EM: tom@ucar.edu
AF: High Altitude Observatory National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000 United States
AB: Charles Greeley Abbot was correct in predicting the solar constant is decidedly inconstant. Indeed, the solar irradiance exhibits pronounced variations on nearly all currently accessible observational time scales. There is overwhelming evidence for a tight correlation between the Sun's magnetic activity cycle and broadband spectral irradiance in the sense that greater magnetic activity implies excess irradiance and vice-versa. Global dynamical and evolutionary processes determine the time-averaged solar luminosity. In this realm the variable magnetic field is of no consequence. It is therefore of interest to ask how deep within the solar envelope and interior do the irradiance fluctuations persist, and from where do they originate. Observational and theoretical evidence will be presented to suggest that an answer to this fundamental question may soon be in hand.
DE: 7500 SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY
DE: 7524 Magnetic fields
DE: 7536 Solar activity cycle (2162)
DE: 7537 Solar and stellar variability
DE: 7544 Stellar interiors and dynamo theory
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting