The Sun Radio Space Imaging Experiment (SunRISE)

0507052 - ÚFA 2020 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Lazio, T.J.W. - Kasper, J. - Alibay, F. - Amiri, N. - Bastian, T. - Cohen, C. - Landi, E. - Manchester, W. - Reinard, A. - Schwadron, N. - Cecconi, B. - Hallinan, G. - Hegedus, A. - Krupař, Vratislav - Maksimovic, M. - Zaslavsky, A.
The Sun Radio Space Imaging Experiment (SunRISE).
2017 XXXIIND GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM OF THE INTERNATIONAL UNION OF RADIO SCIENCE (URSI GASS). New York: IEEE, 2017, č. článku 8742146. ISBN 978-908259870-4.
[URSI General Assembly and Scientific Symposium (URSI GASS) 2017 /32./. Montreal (CA), 19.08.2017-26.08.2017]
Institucionální podpora: RVO:68378289
Klíčová slova: coronal mass ejection * ionospheric absorptions * radio * solar system
Obor OECD: Fluids and plasma physics (including surface physics)
http://www.ursi.org/proceedings/procGA17/papers/Paper_HJ26-3(1332).pdf

Radio emission from coronal mass ejections (CMEs) is a direct tracer of particle acceleration in the inner heliosphere and potential magnetic connections from the lower solar corona to the heliosphere. Energized electrons excite Langmuir waves, which convert into radio emission at the local plasma frequency, with the most intense acceleration thought to occur within 20 R-S. The capability of ground-based radio arrays to track this radio emission is limited by ionospheric absorption (nu greater than or similar to 15 MHz) to altitudes less than about 3R(S). The state of the art for tracking such emission from space is defined by single antennas (Wind/WAVES, Stereo/SWAVES), in which the tracking is accomplished by assuming a frequency-to-density mapping, there has been some success in triangulating the emission between the spacecraft, but considerable uncertainties remain. The Sun Radio Imaging Space Experiment (SunRISE) mission concept would be a constellation of small spacecraft operating as an interferometer designed to localize and track radio emissions in the inner heliosphere. Each spacecraft would carry a receiving system for observations below 25 MHz, and SunRISE would image CMEs more than a few solar radii from the Sun.
Trvalý link: http://hdl.handle.net/11104/0298144