Origin of Helical Coronal Disturbances from the Sun

Details Origin of Helical Coronal Disturbances from the Sun Origin of Helical Coronal Disturbances from the Sun

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...543.1011h&link_type=abstract

The Astrophysical Journal, Volume 543, Issue 2, pp. 1011-1015.

Astronomy and Astrophysics

Astronomy

8

Sun: Corona, Sun: Magnetic Fields, Sun: Prominences, Sun: Radio Radiation

Scientific paper

By combining data from the Nobeyama Radioheliograph and the LASCO coronagraph aboard the SoHO spacecraft, we report two helical coronal disturbances accompanying white-light coronal mass ejections (CMEs). These are activated prominences at the base, rotating around each vertical axis while moving on the solar surface with projected speeds of >=50 km s-1. The activity continues in a CME core and in a neighboring streamer growing over 6 Rsolar. Neither flare activity nor radio bursts were observed during the two events. We suggest that the apparent presence or absence of a CME core depends on the density of the eruptive material associated with the CME.

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