Dynamic spectrum of a region encompassing the source (left) and another region away from the phase center for the March 26^th observation, in Stokes I (top) and Stokes V (bottom). The dynamic spectrum has been obtained selecting the source from the image plane and integrating over 256 MHz-wide spectral windows, for each scan (approximately 6 min long). On average, the rms in each pixel is ∼70 μJy beam⁻¹ for each scan in both Stokes I and Stokes V. The thin vertical black lines between target scans represent the time spent on the phase calibrator (∼48 s). The panels on the right side have been plotted only to present a visual comparison between the flux values during the presence and absence of a radio source. To obtain these spectra, we used the CASA task specflux and imstat after generating the cube images with tclean, for every source scan.