CCAPP Seminar: "The Importance of Cosmic Ray Feedback"

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February 5, 2019
11:30AM - 12:30PM
Location
PRB 4138

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Add to Calendar 2019-02-05 11:30:00 2019-02-05 12:30:00 CCAPP Seminar: "The Importance of Cosmic Ray Feedback" TK Chan (UC San Diego) Stellar feedback is an indispensable component in galaxy evolution, which regulates star formation, drives galactic winds, and shapes galaxy structures. I will focus on an important kind of stellar feedback — cosmic ray (CR) feedback, which we have recently implemented in the code GIZMO and coupled to the ``Feedback In Realistic Environment'' (FIRE) stellar feedback model. I will demonstrate its strong effects on galaxies, e.g. star formation, galactic wind, and circum-galactic medium, but the effects highly depend on the CR propagation models. I will then show how to constrain the CR propagation models by comparing our simulations with the observed gamma ray emission. Finally, I will discuss the ongoing research and future direction. PRB 4138 Center for Cosmology and AstroParticle Physics (CCAPP) ccapp@osu.edu America/New_York public
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TK Chan (UC San Diego)

Stellar feedback is an indispensable component in galaxy evolution, which regulates star formation, drives galactic winds, and shapes galaxy structures. I will focus on an important kind of stellar feedback — cosmic ray (CR) feedback, which we have recently implemented in the code GIZMO and coupled to the ``Feedback In Realistic Environment'' (FIRE) stellar feedback model. I will demonstrate its strong effects on galaxies, e.g. star formation, galactic wind, and circum-galactic medium, but the effects highly depend on the CR propagation models. I will then show how to constrain the CR propagation models by comparing our simulations with the observed gamma ray emission. Finally, I will discuss the ongoing research and future direction.

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