Picard satellite for solar astrometry
Costantino Sigismondi
TL;DR
The Picard satellite mission aims to precisely measure the solar diameter and irradiance to better understand solar luminosity variations and aid climate studies, utilizing advanced radiometry and historical data analysis.
Contribution
This paper introduces the Picard satellite mission and its objectives to improve solar parameter measurements for climate and astrophysics research.
Findings
High-precision measurements of solar diameter and irradiance
Evaluation of the W parameter for solar luminosity
Potential to recover past solar luminosity data
Abstract
The Picard solar satellite has been launched on June 15, 2010. This mission is dedicated to the measurement of the solar diameter with an expected accuracy of milliarcseconds of arc. The radiometer onboard is to measure the total solar irradiance. The final goal is the evaluation of the W, the logarithmic ratio of radius and luminosity. This parameter will help the climatologists to recover past values of the solar luminosity when the radius is available from ancient eclipses data.
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