Σεμινάριο Τμήματος

The Inner Heliosphere in 3D: Observations of Coronal Mass Ejections, Solar Wind, and Comets during the Maximum of Solar Activity

15 Ιαν 2014
Δρ. Άγγελος Βουρλίδας
Αστροφυσικός
Naval Research Laboratory Washington, District of Columbia, U.S.A.
12:30, Αίθουσα Α31

Περίληψη:
The current solar cycle, albeit low in sunspot numbers, is not lacking in coronal explosive activity. The solar corona has produced several spectacular Coronal Mass Ejections (CMEs) directed at Earth and other planets. This is the first time in human history that we are able to image continuously the full 360 degree corona and the full inner heliosphere from the Sun to Earth. In addition, a host of inner heliospheric spacecraft can directly probe the quiescent and transient solar wind at several locations around Mercury, Venus, Earth, and Mars. These unprecedented observational capabilities offer a unique opportunity to study the solar maximum activity and in particular CMEs and their impact on Earth, on other planets and even, on comets. The new field of Interplanetary Space Weather is being born. In this talk, I review our progress (sometimes) and befuddlement (more often) towards understanding the eruption and evolution of CMEs in the inner heliosphere and their interaction with other objects. I discuss how this knowledge is shaping Space Weather efforts around the world, including a comprehensive approach from a large group of Greek solar and space physicists under the Thalis aegis. I will also discuss the approach and demise of comet ISON as seen by our imagers on the STEREO and SOHO missions.

ΥΛΙΚΟ

© 2018 ΤΜΗΜΑ ΦΥΣΙΚΗΣ, ΑΠΘ.