From the Sun to the Stars: Building of a Universal Theory of Spots and Flares Based on Numerical and Observational Studies
Description: It is known that the flares on the Sun and stars, which are the releasing of magnetic energy, tend to appear in active regions (ARs) including sunspots. With the aim to reveal the mechanisms behind these phenomena, we performed the following research activities. (1) Analyzing the observational data of strong solar flares for six years, we revealed the relationship between the flare durations and AR magnetic fields, and the magnetic structures of flare-productive ARs. (2) We numerically reproduced the magnetic structures of flaring ARs and elucidated the importance of twist and interaction of magnetic fields within the stellar interior. (3) With thermo-dynamical simulations, we unraveled the statistical relation between the flare durations and AR magnetic fields and discussed the possible application to the stellar flare data. (4) Related studies were also performed.
Amount: ¥3,380,000
Funding type: fellowship
Funder scheme: Grant-in-Aid for Young Scientists (B)
Start date: 2016-04-01
End date: 2019-03-31
Investigator: Shin Toriumi
Institution: National Astronomical Observatory of Japan
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Funded outputs count: 17
Funder award ID: 16K17671
OpenAlex ID: G4221761806