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Study of ICME by spacecraft radio signals


Molera Calves, G and Kallio, E and Cimo, G and Bocanegra-Bahamon, T, Study of ICME by spacecraft radio signals, Proceedings of Science pp. 1-5. ISSN 1824-8039 (2019) [Non Refereed Article]

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Tracking radio communication signals from planetary spacecraft with ground-based telescopes offers, among others, the possibility to study the electron density and the interplanetary scintillation of the solar wind. Observations of the telemetry link of spacecraft have been conducted regularly with ground antennae from the European Very Long Baseline Interferometry Network (EVN), aiming to characterize the propagation of radio signals in the solar wind at different solar elongations and distances from the Sun. We have studied the phase fluctuations of Mars Express spacecraft radio signal while an interplanetary coronal mass ejection (ICME) crossed the radio path during one of our observations on 6 April 2015. Our measurements showed that the Doppler measurements and phase scintillation indices increased by a factor of 4 during the passage of the ICME. Thus, it is confirmed that the phase scintillation technique based on spacecraft signals provides information of the properties and propagation of the ICMEs in the heliosphere, and can be used to detect and monitor the presence of ICMEs in the near future.

Item Details

Item Type:Non Refereed Article
Keywords:ICME, spacecraft, radio science, IPS
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Solar physics
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Molera Calves, G (Dr Guifre Molera Calves)
ID Code:134594
Year Published:2019
Deposited By:Mathematics and Physics
Deposited On:2019-08-21
Last Modified:2019-08-27

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