SHAO Astrophysics Colloquia

Title: Lin-Forbes Model for the Solar Eruption and the CME/Flare Current Sheet

Speaker: Jun Lin (Yunnan Astronomical Observatory)

Time: 3 PM, Apr. 06th (Thursday)

Abstract:

A long current sheet (CS) is usually developed by the major eruption, it connects the solar flare to the associated coronal mass ejection (CME), and magnetic reconnection taking place through it converts the magnetic energy into heat and the kinetic energy of the bulk of plasma, which account for the flare and the CME, respectively, as well as the kinetic energy of energetic particles. It is believed that reconnection has to occur at a reasonably fast rate in order to drive the eruption as energetically as observed. During the last decade, observations suggested that a CME/flare CS could possess a considerably large thickness. We performed a set of studies and analyses theoretically to show that a CME/flare CS may be highly turbulent, which results in various structures of multiple scales, and those multiple scale structures may help enhance the rate of magnetic reconnection dramatically to the level required for driving the major eruption.

Visitors:

Group meetings

Black hole Accretion and High-energy Astrophysics /Black Hole Feedback and Cosmic Ray Astrophysics Seminar

Location: 1608

Time: 14:00-16:00, Wednesday (April 5th)

Speaker: Prof. Fulai Guo

Title: Triggering and Delivery Algorithms for AGN Feedback

http://adsabs.harvard.edu/abs/2016arXiv160303674M

Speaker: Yaping Li

Title: Modeling for Stellar Feedback in Galaxy Formation Simulations

http://adsabs.harvard.edu/abs/2017ApJ...836..204N 

Visitors

Name: Prof. James Binney

Affiliation: University of Oxford, UK

Dates: 10th-12th April

Host: Martin C. Smith

Office: TBC

Name: Martin Bureau

Affiliation: University of Oxford

Dates: 27/03 - 02/06/2017

Host: Juntai Shen and Lei Hao

Office: 1618