Science Objectives and Current Status of Solar-C_EUVST
Abstract
SolarC EUVST is designed to comprehensively understand the energy and mass transfer from the solar surface to the solar corona and interplanetary space, and to investigate the elementary processes that take place universally in cosmic plasmas. The proposed mission is a fundamental step for answering how the plasma universe is created and evolves, and how the Sun influences the Earth and other planets in our solar system. The two primary science objectives for SolarC EUVST are : I) Understand how fundamental processes lead to the formation of the solar atmosphere and the solar wind, II) Understand how the solar atmosphere becomes unstable, releasing the energy that drives solar flares and eruptions. SolarC EUVST will, A) seamlessly observe all the temperature regimes of the solar atmosphere from the chromosphere to the corona at the same time, B) resolve elemental structures of the solar atmosphere with high spatial resolution and cadence to track their evolution, and C) obtain spectroscopic information on the dynamics of elementary processes taking place in the solar atmosphere. In this talk, we will first discuss the science target of the SolarC EUVST, and discuss the science topic associated flare in detail. Photospheric motions lead to the accumulation of free magnetic energy in the corona. This system eventually becomes unstable, releasing the energy through magnetic reconnection. This process of energy conversion heats the plasma to high temperatures and drives coronal mass ejections (CMEs). By measuring the properties of multi-temperature flaring plasma, SolarC EUVST will investigate why the reconnection is fast despite the high magnetic Reynolds number. It will also monitor the temporal evolution of solar active regions and identify the triggering mechanism for the flare and eruption. We will discuss the science objectives "Understand the Fast Magnetic Reconnection Process" and "Identify the Signatures of Global Energy Buildup and the Local Triggering of the Flare and Eruption". We also report the current status of SolarC EUVST.
- Publication:
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43rd COSPAR Scientific Assembly. Held 28 January - 4 February
- Pub Date:
- January 2021
- Bibcode:
- 2021cosp...43E1790I