ULYSSES-WIND Simultaneaous Radio Observations of Interplanetary Solar Activity : Energetic Electrons and Transient Shocks

Details ULYSSES-WIND Simultaneaous Radio Observations of Interplanetary Solar Activity : Energetic Electrons and Transient Shocks ULYSSES-WIND Simultaneaous Radio Observations of Interplanetary Solar Activity : Energetic Electrons and Transient Shocks

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh21b0425h&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH21B-0425

Astronomy and Astrophysics

Astronomy

6954 Radio Astronomy, 2118 Energetic Particles, Solar, 2139 Interplanetary Shocks

Scientific paper

In the interplanetary medium (IPM), the radio receivers on the Ulysses and Wind spacecraft have recorded many solar radio emissions which drift from high to low frequencies. Most of them are type III fast drifting bursts. These are produced by subrelativistic electrons which are ejected from active regions and then travel outward along open magnetic field lines to lower densities in the IPM. Less frequently other emissions, called type II bursts, are observed to appear as slowly drifting frequency bands with intensities often very weak of the order of the local plasma thermal background. These drifting features are due to radio emissions generated by solar wind electrons accelerated by transient shocks moving outward from the Sun to the IPM. We use radio data from Ulysses and Wind, observed simultaneously, to track type III and type II bursts , and to deduce information on the burst characteristics (radiation mode,directivity), the source region and the propagation. We present these observations in perspective of the dual radio observations of the future Stereo mission

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