Space Sciences

Observing the evolution of the Sun's global coronal magnetic field over eight months

Z. Yang, H. Tian, et al.

Discover how the Sun's coronal magnetic field, as observed by researchers Zihao Yang, Hui Tian, Steven Tomczyk, Xianyu Liu, Sarah Gibson, Richard J. Morton, and Cooper Downs, plays a vital role in heating coronal plasma and triggering solar eruptions. This groundbreaking study employs 114 magnetograms to reveal global corona characteristics over eight months, highlighting intriguing field strength variations and active longitude signatures.

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Abstract

The Sun's coronal magnetic field stores energy released to heat the coronal plasma and drive solar eruptions. This paper presents observations from the Upgraded Coronal Multi-channel Polarimeter (UCoMP) providing 114 magnetograms of the global corona over eight months. Analysis revealed varying field strengths ( <1 to 20 Gauss within 1.05-1.6 solar radii), an active longitude signature, and general consistency with coronal models, though discrepancies existed in high-latitude regions.

Publisher

Science

Published On

Oct 04, 2024

Authors

Zihao Yang, Hui Tian, Steven Tomczyk, Xianyu Liu, Sarah Gibson, Richard J. Morton, Cooper Downs

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