High DM Millisecond Candidate Sifting

Pan, Zhichen

The current pulsar search is highly possible to miss high DM millisecond candidates due to the DM trail plan and the search bias. While the Five-hundred-meter Aperture Spherical radio Telescope brought us much higher sensitivity, we may have chance to find new millisecond pulsars with further distance, which means their DM values will be higher than others.

I will introduce a new candidate sifting code in detail, with which we successfully used for finding 3 new pulsars in NGC6517 from FAST observation data. They are very faint signals and may only discovered by our sifting code.