SOHO and radio observations of a CME shock wave

Details SOHO and radio observations of a CME shock wave SOHO and radio observations of a CME shock wave

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.1439r&link_type=abstract

Geophysical Research Letters, Volume 27, Issue 10, p. 1439-1442

Physics

Plasma Physics

53

Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections, And Astronomy: Radio Emissions, And Astronomy: Ultraviolet Emissions, Space Plasma Physics: Shock Waves

Scientific paper

A 1200 kms-1 Coronal Mass Ejection was observed with the SOHO instruments EIT, LASCO and UVCS on June 11, 1998. Simultaneously, Type II radio bursts were observed with the WAVES experiment aboard the Wind spacecraft at 4 MHz and by ground-based instruments at metric wavelengths. The density in the shock wave implied by the higher frequency is close to that inferred from the SOHO/UVCS experiment. The drift rates of the Type II radio bursts suggest shock speeds lower than the speed derived from SOHO observations. The SOHO/UVCS spectrum shows enhanced emission in lines of O5+ and Si11+, consistent with modest compression in an MHD shock.

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