[IGPP Everyone] TODAY: Space Physics Seminar, Fri. 3/29 3:30pm: "Toward a global picture of cool dwarf stellar wind models: rotation, coronae, and (exo)planets" (V. Reville, UCLA EPSS)

[Emmanuel V. Masongsong]

SPACE PHYSICS SEMINAR 
DEPARTMENT OF EARTH, PLANETARY, AND SPACE SCIENCES 


DEPARTMENT OF ATMOSPHERIC AND OCEANIC SCIENCES 

UNIVERSITY OF CALIFORNIA, LOS ANGELES 



Toward a global picture of cool dwarf stellar wind models: rotation, coronae, and (exo)planets 



Victor Reville 
UCLA EPSS 



SThe discovery of more than 3000 exoplanets has revolutionized our understanding of the formation and the structure of planetary systems. Among the big questions is how to define an habitable planet. The usual criterion is the existence of the liquid water at the surface, but many others can be invoked. Is the planetary orbit stable, and for how long? Is the planet able to sustain a significant atmosphere? The answer to these questions need a good description of the planet environment, i.e. the stellar atmosphere or stellar wind. It is indeed thought that all solar-like stars possess an expanding atmosphere similar to the solar wind. In this talk, we will see how to use multi-spectral observations to constrain and simulate the properties of stellar winds. We will also introduce star planet magnetic interactions that can be for some system the predominant mechanism for planetary migration, and we will discuss the possibility of detecting planetary magnetosphere in radio wavelength. Finally, we will see how new observations of the Sun with Parker Solar Probe will bring a deeper understanding of stellar atmospheres and inter(exo)planetary media. 





Friday, September 29, 2017 

Room 6704 Geology 

3:30 - 5:00 PM 



In Charge 

M. Velli 




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