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The spatial association of narrow band metric radio spikes with type IIIbursts is analyzed. The analysis addresses the question of a possible causalrelation between the spike emission and the acceleration of the energeticelectrons causing the type III burst. The spikes are identified by thePhoenix-2 spectrometer (ETH Zurich) from survey solar observations in thefrequency range from 220 MHz to 530 MHz. Simultaneous spatial information wasprovided by the Nancay Radioheliograph (NRH) at several frequencies. Fiveevents were selected showing spikes at one or two and type III bursts at two ormore Nancay frequencies. The 3-dimensional geometry of the single events hasbeen reconstructed by applying different coronal density models. As a workinghypothesis it is assumed that emission at the plasma frequency or its harmonicis the responsible radiation process for the spikes as well as for the type IIIbursts. It has been found that the spike source location is consistent with thebackward extrapolation of the trajectory of the type III bursts, tracing amagnetic field line. In one of the analyzed events, type III bursts with twodifferent trajectories originating from the same spike source could beidentified. These findings support the hypothesis that narrow band metricspikes are closely related to the acceleration region.Comment: 11 pages, 9 figure

Spatial analysis of solar type III events associated with narrow band spikes at metric wavelengths