Energetic particles at the Sun - 물리천문학부 천문학전공

Colloquium

Astronomy Colloquium (2017 Fall Semester)

* Date: Oct 19
* Speaker: Nai-Hwa Chen (KASI)
* Title: Energetic particles at the Sun
* Abstract

Our sun is an effective accelerator, producing highly energetic particles at all scales and driving space weather in whole solar system. Understanding the origin of those energetic particles is now a major issue in unveiling the fundamental physic processes which are also common seen in other astronomical systems. In the extended atmosphere of the Sun, known as the heliosphere, numerous eruptions take place at outer corona of the Sun in different scales in which escaping energetic particles can provide precious information of the energization processes. Additionally, those energization processes can also be investigated by multi-wavelengths observations (from radio emission to hard X-ray). In this talk, I will briefly introduce the current understandings of those fundamental questions (such as the dominant acceleration process in solar transient eruptions, how do those energetic particles propagate and fill the heliosphere?) and also address some following issues to be answered.

Date	Speaker	Title	Remarks
Sep 07	Ji-Yeon Seok (NAOC China)	PAH emission in protoplanetary disks
Sep 14	Jeongwoo Lee (Astronomy program, SNU)	The Total Solar Eclipse in 2017
Sep 21	Sang Gak Lee (College of Natural Sciences, SNU)	Spectroscopic Observation with NYSC 1 m Telescope
Sep 28	David Parkinson (KASI)	Tests of fifth forces using large-scale structure
Oct 05/Oct 12		[Chuseok]/[KAS Fall Meeting]
Oct 17	Tali Palma (UAB Santiago, Chile)	VVV Survey and Milky Way Globular Clusters	Tuesday
Oct 19	Nai-Hwa Chen (KASI)	Energetic particles at the Sun
Oct 26	Roberto Decarli (INAF, Italy)	The interstellar medium at high redshift
Nov 02	Christophe Pichon (IAP, France)	Connecting Large Scale Structures to Galaxy morphology
Nov 09	Northrup Grumman Korea	James Webb Space Telescope Roadshow
Nov 16	Hyunseok Jung (SNU Physics Department)	From Schrödinger’s Cat to Quantum Information Technology
Nov 23	Seon-Hee Seo (SNU Physics Department)	Neutrinos Oscillations: Past, Present and Future
Nov 30	Nobuo Arimoto (NAOJ / SNU)	A Hyper Suprime-Cam View of the Interacting Galaxies of the M81 Group – Structures and Stellar Populations
Dec 07	Taysun Kimm (Yonsei University)	Modeling stellar feedback in galaxy formation simulations: where do we stand?
Jan 10	Paul Yun (NASA Ambassador)	NASA Planetary Science Division Vision 2050	wednesday

2017 Fall semester detail