MUCH ADO ABOUT NOTHING - SEVERAL LARGE-AREA SURVEYS FOR RADIO PULSARSFROM ARECIBO

We report surveyed regions and flux limits for several large-area surv eys at 430 MHz for radio pulsars using the 305 m reflector at Arecibo, Puerto Rico. The surveys used integration times between 8 and 67 s an d covered a total area of similar to 515 square degrees. No previously undiscovered pulsars were detected in these regions, although all pre viously known pulsars were detected. The nondetection of new pulsars p laces constraints on the population of low-luminosity pulsars and must be taken into account in estimates of the local density of millisecon d pulsars.