| 7th of July 2021 |
|---|
 |
| ATNF Colloquium |
| The FAST Galactic Plane Pulsar Snapshot survey |
| JinLin Han (NAOC) |
|
Abstract:
The Five-hundred-meter Aperture Spherical radio Telescope (FAST), that
incorporates an L-band 19-beam receiver with a system temperature of
about 20 K, is the most sensitive radio telescope utilized for
discovering pulsars. We designed the snapshot observation mode for a
FAST key science project, the Galactic Plane Pulsar Snapshot (GPPS)
survey. The integration time for each pointing is 300 seconds so that
the GPPS observations for a cover can be made in 21 minutes. The goal
of the GPPS survey is to discover pulsars within the Galactic latitude
of ±10deg from the Galactic plane, and the highest priority is given
to the inner Galaxy within ±5deg.
Up to now, the GPPS survey has discovered 212 pulsars, including currently the faintest pulsars which cannot be detected by other telescopes, pulsars with extremely high dispersion measures (DMs) which challenge the currently widely used models for the Galactic electron density distribution, pulsars coincident with supernova remnants, 42 millisecond pulsars, 17 binary pulsars, some nulling and mode-changing pulsars and rotating radio transients (RRATs). The follow-up observations for confirmation of new pulsars have polarization-signals recorded for polarization profiles of the pulsars. Re-detection of previously known pulsars in the survey data also leads to significant improvements in parameters for 64 pulsars. The GPPS survey discoveries are published and will be updated at http://zmtt.bao.ac.cn/GPPS/. |