@article{3018616, title = "A shock associated (SA) radio event and related phenomena observed from the base of the solar corona to 1 AU", author = "Bougeret, J.-L. and Zarka, P. and Caroubalos, G. and Karlický, M. and Leblanc, Y. and Maroulis, D. and Hillaris, A. and Moussas, X. and Alissandrakis, G.E. and Dumas, G. and Perche, C.", journal = "GEOPHYSICAL RESEARCH LETTERS", year = "1998", volume = "25", number = "14", pages = "2513-2516", publisher = "Wiley-Blackwell Publishing Ltd", issn = "0094-8276", doi = "10.1029/98GL50563", keywords = "Shock waves; Sodium compounds; Solar radiation; Space optics; Electromagnetic wave emission; Electrons; Frequencies; Radio astronomy; Radio receivers; Shock waves; Spacecraft observatories; Spectrographs; Spectrometers; Sun, Astronomical instrument; Astronomical units; Distance ranges; Radio bursts; Radio emission; Solar corona; Type II; Wind spacecraft, Solar system; Astrophysics, Nancay decameter array; Shock associated radio event; Solar corona", abstract = "We present for the first time an almost complete frequency coverage of a Shock Associated (SA) radio event and related phenomena observed on May 6, 1996 at 9:27 UT. It is observed from the base of the solar corona up to almost 1 Astronomical Unit (AU) from the Sun by the following radio astronomical instruments: the Ondřejov spectrometer operating between 4.5 GHz and 1 GHz (radiation produced near the chromosphere); the Thermopyles Artemis-IV spectrograph operating between 600 MHz and 110 MHz (distance range about 1.1-1.4 R⊙ from sun center); the Nançay Decameter Array operating between 75 and 25 MHz (distance range about 1.4-2 R⊙); and the RAD2 and RAD1 radio receivers on the WIND spacecraft covering the range from 14 MHz to about 20 kHz (distance range between 3 R⊙ and about 1 AU). Observations at the Nançay Decameter Array clearly show that the SA event starts from a coronal type II radio burst which traces the progression of a shock wave through the corona above 1.8 R⊙-2 R⊙ from the sun center. This SA event has no associated radio emission in the decimetric-metric range, thus there is no evidence for electron injection in the low/middle corona. Copyright 1998 by the American Geophysical Union." }