Você está aqui: INPE / GSST /
Save-the-Date Announcement


Download Mission Study Report Download

First Galileo Solar Space Telescope Workshop

March 16-18, 2020


Overview

The Galileo Solar Space Telescope (GSST) is a spacecraft mission to provide accurate measurements of the magnetic field and its evolution from the solar surface through the outer layers of the solar atmosphere as part of the international efforts to understand the evolution of the heliosphere and its influences on the Earth. The main goal of this first GSST workshop is to assess the technical and programmatic feasibility of the strawman GSST mission payload concepts to achieve the desired science goals for the mission’s Phase 0/A, which will be conducted from May to November 2020.

The underlying basic science questions to be addressed by the GSST mission are:

  • What are the fundamental physical/plasma processes at work in the Sun?
  • How does the solar dynamo work?
  • What are the relative contributions of different physical processes that lead to the heating of the outer layers of the solar atmosphere (chromosphere to corona)?
  • What effect does the variable solar magnetic field structure have on the evolution of the Earth's highly-coupled atmosphere-ocean system?
  • What are the responses of the magnetic fields and energetic particles in the vicinity of the Earth due to different solar wind structures?

To help address these open scientific questions, the proposed Galileo Solar Space Telescope mission will perform solar observations in high spatial and temporal resolution to characterize the evolution of the magnetic structure of the photosphere, chromosphere, and its modulation of the transition region and corona, and its impact on the heliosphere out to the Earth. Specifically, the mission has three main objectives: (1) Understand the evolution of the magnetic structure of the Sun; (2) Improve understanding of the Sun's influence on Earth's climate; and, (3) Determine the Sun's impact on geospace.

Workshop activities will be organized around these objectives via three working groups: solar physics; Sun-climate interactions; and solar wind-magnetosphere physics.

The INPE's Space Missions Integrated Design Center (CPRIME) completed the GSST mission concept study in December 2017. The outcomes of this study were a conceptual system to meet the objectives of the mission, comprising ground and space segments, as well as a first assessment of the development time, risks, and costs associated with the proposed solutions. The optical imaging payload architecture, the satellite orbit, and the available ground stations to receive scientific data from the satellite were the primary identified discriminators for the mission, driving satellite pointing accuracy, payload pointing stability, and a high rate of scientific data acquisition.

The payload to measure the magnetic field structure of the solar atmosphere is based on spectropolarimetry and will consist of three telescopes. One provides high-resolution imaging in the visible and ultraviolet while the other two provide full-disk imaging in those spectral regions. An analysis taking into account different solutions for onboard data storage, availability of ground stations, and data transmission from the satellite suggests that either low-Earth or geostationary orbits provide feasible options. To access a feasibility study based on a strawman payload and mission design, click here:
Download Mission Study Report

The workshop will provide an overview of the GSST mission intents and payload, whereby the GSST team at INPE will present the 'Draft' GSST Scientific Objectives and Measurements Requirements along with a description of the strawman payload and mission design. Keynote talks on Solar Physics, the Sun-Climate connection, and Solar Wind-Magnetospheric Physics will be structured around the science relevant to the draft objectives and the instruments in order to identify open questions and recommend suggested changes to the Scientific Objectives and Measurements Requirements. Synergies with space - and ground-based observatories will be discussed to help identify opportunities for collaborations to expand the science possibilities beyond those of either alone.

Science and instrumentation review panels will help guide interactions between community scientific needs and the GSST mission plans. To ensure useful inputs, the panelists representing each mission topic will address a similar set of questions:

  1. What are the top three Scientific Objectives that can be addressed with the proposed instrumentation?
  2. What are the most important measurements and instrument specifications given the current mission design?
  3. Do you have any out-of-the-box suggestions?

The audience may submit questions and suggestions directly during the panel discussion or electronically after presentations.

Contributions from the community are welcomed as talks during the panels, posters, and discussions.


Rodrigo Leonardi AEB, SOC co-chair
Luis Eduardo Antunes Vieira INPE, SOC co-chair
Alisson Dal Lago INPE, LOC, co-chair
Marlos Rockenbach INPE, LOC, co-chair

Publicado Por: INPE
Última Modificação: Jan 13, 2020 12h07