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First VLA Observations of Nonthermal Metric Bursts Associated with Coronal Mass Ejections Detected by the Solar and Heliospheric Observatory

  • Authors: R. F. Willson, S. L. Redfield, K. R. Lang, B. J. Thompson, and O. C. St. Cyr

Willson et al. 1998 The Astrophysical Journal Letters 504 L117.

  • Provider: AAS Journals

Caption: Fig. 2.

VLA snapshot maps at 400 cm (left and center) and 91.6 cm (right) wavelength taken in 10 s intervals on 1998 March 8 at the times indicated. They are superposed on SOHO EIT images taken in the 195 Å line of Fe XII, formed at ﹩1.5\times 10^{6}﹩ K, within a few minutes of the VLA snapshot maps. The field of view is ﹩30^{\prime }\times 30^{\prime }﹩. The snapshot maps at 21:32:04 UT and 21:32:34 UT show 400 cm continuum and burst sources, respectively. Note that the 400 cm burst emission is displaced about 5﹩\arcmin﹩ northward of the 400 cm continuum source. The image at 21:57:38 UT shows the location of a 91.6 cm type I noise storm source located southward and limbward of the 400 cm sources. The contours denote levels of equal brightness temperature Tb corresponding to ﹩T_{b}=2,\: 4,\: 6,\: ...,\: 18\:\times 10^{5}﹩ K at 21:32:04 and 21:57:38 UT and ﹩T_{b}=5,\: 10,\: 15,\: ...,\: 35\:\times 10^{6}﹩ K at 21:32:34 UT.

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