Variability Of Solar/stellar Activity And Magnetic Field And Its Influence On Planetary Atmosphere Evolution

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STCE Newsletter

complexity are quite ubiquitous processes observed in the dynamics of solar, planetary and interplanetary plasmas, as well as in the dynamical evolution of proxies linked to magnetospheric and ionospheric variability. Unfolding the spatio-temporal structure of magnetic field and plasma fluctuations from experimental

Week 1 (July 6-10) Center Green Buses leave for Center

activity, and longterm variability- Generation and role of magnetic field: Relation of field to structure, heating and variability of solar atmosphere. Solar Wind, solar storms and geospace response. Geomagnetic environment and activity. Space Weather impacts. David Alexander (Rice Univ.) 11:45 Logistics Scott Briggs (NCAR) 12:00-1:30 Lunch

Minicourse on Stellar Activity III: Stellar Coronae

H. Lammer Variability of solar/stellar activity and magnetic field and its influence on planetary atmosphere evolution EP&S 64, 179 (2012). M. Güdel & Y. Nazé X-ray spectroscopy of stars A+A Reviews, 17, 309 (2009) Stelzer et al. The UV and X-ray activity of the M dwarfs within 10 pc of the Sun MNRAS 431, 2063 (2013)

IAUS 354 Post Meeting Report -

9:00-9:30 Solar activity and its influence on planetary atmosphere evolution (Janet Luhmann, UC Berkeley, U.S.A.) 9:30-10:00 Stellar magnetic activity and star-plane t interactions (Aline Vidotto, TCD, Ireland) 10:00-10:15 From the Sun to solar-type stars: radial velocity, photometry, astrometry and log

Dynamos and magnetic fields of the Sun and other cool stars

numerical studies and theory with observations of the evolving surface field of Sun and stars, of the average properties of magnetic fields in a large sample of stars, and of stellar internal flows. For cool stars like the Sun, dynamo action persists from the very formation of the star throughout its existence as a fusion reactor.

The Stellar Imager (SI) Vision Mission

Roadmap, conceived for the purpose of understanding the effects of stellar magnetic fields, the dynamos that generate them, and the internal structure and dynamics of the stars in which they exist. The ultimate goal is to achieve the best possible forecasting of solar/stellar activity and its impact on life in the Universe.


Magnetic activity in cool stars such as the Sun is omnipresent in the outer layers and atmosphere. Its influence increases with radius and dominates in the corona. Commission 10 concentrates on the dynamic aspects of solar activity and in particular on the release of magnetic energy, particle acceleration, heating of the corona and origin of

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Implications for Long-term Solar Variability 17 Mursula K., Long-term Evolution of Solar Wind: Implications to Sun and Earth 17 Nandy D., Long-term Solar-stellar Magnetic Variability and its Impact on Planetary Environments 18

Name Lab Sunspot Analysis

processes below the photosphere and in the solar- stellar atmospheres. Since the Sun's radiative output is the main driver of the physical processes with in the Earth's atmosphere, the study of irradiance changes is an extremely important issue for climatic studies as well.

Name Lab Sunspot Analysis

May 23, 2021 the solar interior, the photosphere, the chromosphere, the corona and the heliosphere. The 11-year solar activity cycle, more generally known as the sunspot cycle, is a fundamental property of the Sun. This phenomenon is the generation and evolution of magnetic fields in the Sun s convection zone, the photosphere.

Book of Abstracts

Shiokawa K., Georgieva K., SCOSTEP's Scientific Program VarSITI: Variability of the Sun and its Terrestrial Impact 01 Roussev I., Synergy Between SCOSTEP and NSF's GEM, CEDAR, and SHINE Programs 01 Solar and Heliospheric Drivers of Earth-Affecting Events