The solar eruption of 13 May 2005: EISCAT and MERLIN observations of a coronal radio burst

R. A. Jones, A. R. Breen, R. A. Fallows, M. M. Bisi, P. Thomasson, G. Wannberg, C. A. Jordan

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5 Citations (SciVal)

Abstract

We report results from EISCAT and MERLIN observations of radio scintillation during a solar eruptive event in May 2005. Anomalous increases in signal strength detected at sites more than 2000 km apart are shown to arise from the detection of a strong coronal radio burst in the distant off-axis response of the MERLIN and EISCAT antennas. These observations show that EISCAT is capable of detecting the signatures of explosive events in the solar atmosphere with a high degree of time resolution. We further suggest that the highly time-structured variation in signal strength caused by distant off-axis detection of a powerful coronal radio signal could provide an explanation for previously unexplained anomalies in EISCAT IPS observations, as well as being a potential source of errors in active observations using radar codes with a completion time longer than the time-variation of the coronal signal.
Original languageEnglish
Pages (from-to)2413-2418
Number of pages6
JournalAnnales Geophysicae
Volume24
DOIs
Publication statusPublished - 20 Sept 2006

Keywords

  • solar physics
  • astrophysics
  • astronomy (Radio emissions, Flares and mass ejections
  • Radio science (Instruments and techniques)

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