Analysis of an Interplanetary Coronal Mass Ejection by a Spacecraft Radio Signal: A Case Study

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • G. Molera calvés
  • Esa Kallio

  • G. Cimo
  • J. Quick
  • D. A. Duev
  • T. Bocanegra bahamón
  • M. Nickola
  • M. A. Kharinov
  • A. G. Mikhailov

Organisaatiot

  • National Land Survey of Finland
  • Hartebeesthoek Radio Astronomy Observatory
  • California Institute of Technology
  • CAS - Shanghai Astronomical Observatory
  • Russian Academy of Sciences
  • Joint Institute for VLBI in Europe
  • Netherlands Institute for Radio Astronomy (ASTRON)
  • Delft University of Technology

Kuvaus

Tracking radio communication signals from planetary spacecraft with ground-based telescopes offers the possibility to study the electron density and the interplanetary scintillation of the solar wind. Observations of the telemetry link of planetary spacecraft have been conducted regularly with ground antennae from the European Very Long Baseline Interferometry Network, aiming to study the propagation of radio signals in the solar wind at different solar elongations and distances from the Sun. We have analyzed the Mars Express spacecraft radio signal phase fluctuations while, based on a 3-D heliosphere plasma simulation, an interplanetary coronal mass ejection (ICME) crossed the radio path during one of our observations on 6 April 2015. Our measurements showed that the phase scintillation indices increased by a factor of 4 during the passage of the ICME. The method presented here confirms that the phase scintillation technique based on spacecraft signals provides information of the properties and propagation of the ICMEs in the heliosphere.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut1523-1534
Sivumäärä12
JulkaisuSpace Weather
Vuosikerta15
Numero11
TilaJulkaistu - marraskuuta 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 16403480