6 October 2011 Earth-Affecting Solar Causes Observatory (EASCO): a mission at the Sun-Earth L5
Author Affiliations +
Abstract
Coronal mass ejections (CMEs) and corotating interaction regions (CIRs) as well as their source regions are important because of their space weather consequences. The current understanding of CMEs primarily comes from the Solar and Heliospheric Observatory (SOHO) and the Solar Terrestrial Relations Observatory (STEREO) missions, but these missions lacked some key measurements: STEREO did not have a magnetograph; SOHO did not have in-situ magnetometer. SOHO and other imagers such as the Solar Mass Ejection Imager (SMEI) located on the Sun-Earth line are also not well-suited to measure Earth-directed CMEs. The Earth-Affecting Solar Causes Observatory (EASCO) is a proposed mission to be located at the Sun-Earth L5 that overcomes these deficiencies. The mission concept was recently studied at the Mission Design Laboratory (MDL), NASA Goddard Space Flight Center, to see how the mission can be implemented. The study found that the scientific payload (seven remote-sensing and three in-situ instruments) can be readily accommodated and can be launched using an intermediate size vehicle; a hybrid propulsion system consisting of a Xenon ion thruster and hydrazine has been found to be adequate to place the payload at L5. Following a 2-year transfer time, a 4-year operation is considered around the next solar maximum in 2025.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nat Gopalswamy, Nat Gopalswamy, Joseph M. Davila, Joseph M. Davila, Frédéric Auchère, Frédéric Auchère, Jesper Schou, Jesper Schou, Clarence M. Korendyke, Clarence M. Korendyke, Albert Shih, Albert Shih, Janet C. Johnston, Janet C. Johnston, Robert J. MacDowall, Robert J. MacDowall, Milan Maksimovic, Milan Maksimovic, Edward Sittler, Edward Sittler, Adam Szabo, Adam Szabo, Richard Wesenberg, Richard Wesenberg, Suzanne Vennerstrom, Suzanne Vennerstrom, Bernd Heber, Bernd Heber, } "Earth-Affecting Solar Causes Observatory (EASCO): a mission at the Sun-Earth L5", Proc. SPIE 8148, Solar Physics and Space Weather Instrumentation IV, 81480Z (6 October 2011); doi: 10.1117/12.901538; https://doi.org/10.1117/12.901538
PROCEEDINGS
12 PAGES


SHARE
RELATED CONTENT

Solar Probe Mission to the Sun overview and...
Proceedings of SPIE (February 11 2003)
SMEI design and development of an Earth orbiting all...
Proceedings of SPIE (February 04 2004)
Summary of the Solar Orbiter payload working group activities
Proceedings of SPIE (February 04 2004)
Direct UV optical imaging of stellar surfaces the Stellar...
Proceedings of SPIE (September 20 2007)
The Stellar Imager (SI) vision mission
Proceedings of SPIE (June 28 2006)

Back to Top