References

1

: Radio Flux Densities

: X-ray Observations

  
Figure: Figure 1. The measured radio flux densities of LSI+61 at = 4.9 GHz (filled circles) and = 1.5 GHz (open circles).

  
Figure 2: Figure 2. The observed x-ray flux over the 0.07 to 2.48 kev band. The three curves are calculated fluxes based on three different spectral models, power law (circles), optically-thin thermal emission (squares) and black body (triangles).

  
Figure 3: Figure 3. Comparison of the x-ray and radio flux density and spectral variations. The top panel shows the 4.9 GHz radio flux density (solid line and circles) and the x-ray flux (dashed line and triangles). In both cases the flux measurements have been normalized by the peak flux. The radio spectral index between 4.9 GHz and 1.5 GHz is shown in the central panel. The bottom panel shows the x-ray hardness ratio, defined as the ratio of photon counts in the energy range 1.0 to 2.48 keV to those in the 0.07 to 1.0 keV range. There is a suggestion of hardening of the x-ray emission at peak x-ray flux co-incident with the onset of the second radio outburst. All quantities are plotted against radio phase.

  
Figure: Figure 4. The x-ray light curve superposed on the distribution of radio outburst peak flux densities. Each square represents the phase and peak flux density for every radio outburst from LSI+61 for which the these values can be unambiguously determined. The x-ray light curve has been scaled in flux to arbitrary units. The range of phase over which the x-ray emission is high matched very well the average phase interval over which LSI+61 is active in the radio.