Latest Results from the Arecibo PALFA Pulsar Survey

Physics

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Scientific paper

The Pulsar Arecibo L-band Feed Array (PALFA) Survey is a sensitive search for pulsars conducted with the 305m Arecibo telescope in Puerto Rico. The Survey is being carried by an international consortium of over 40 astronomers. The increase in the survey speed made possible by the 7-beam ALFA receiver, together with the large collecting area of the Arecibo telescope, make this the most sensitive large-scale survey for pulsars so far. The key goals of the survey are to search large volumes of the Galaxy for pulsars with rotational frequencies in excess of 1000 Hz, and to search for extreme binary systems. Among the many expected scientific payoffs will be new laboratories for the study of gravitational physics and the equation of state of super dense matter. So far, the PALFA survey has found over 35 new pulsars, three of which are millisecond pulsars, one is a relativistic binary system and several new rotating radio transient sources. We discuss the survey, observational data processing strategies, describe the main findings so far, and estimate the final survey yield based on these results.

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