6 Conclusions

• We have shown conclusively that spatial clustering of radio sources can be detected in the angular projection using the FIRST survey catalog. Specifically, we find that the angular correlation function for all sources above 1 mJy shows power law behaviour with and out to .
• Double and multi-component sources (FR II's and FR I's) show, on scales less than , a correlation amplitude which is larger than that obtained for the whole sample by a factor of 2 to 3. Fits on these small scales, however, do not seem to extrapolate successfully to larger scales.
• The correlation function of the faintest sources (<2 mJy) appears to have a slope that is significantly shallower than that for the brighter sources, suggesting a significant contribution from starbursting galaxies at these faint fluxes.

In the future, we will be refining the subsample selection using both source morphology and data on optical counterparts and we will be continuing to investigate the derivation of spatial information using luminosity functions and cross-correlations with other populations. This should allow us to probe source clustering to much higher redshifts than has previously been possible.

The success of the FIRST survey is in large measure due to the assistance of a number of organizations. In particular, we acknowledge support from NRAO, NSF (grants AST-94-19906 and AST-94-21178), IGPP/LLNL, the STScI, the National Geographic Society(NGS No. 5393-094), Columbia University, and Sun Microsystems. This is contribution Number 607 of the Columbia Astrophysics Laboratory.