GUPPI: Green Bank Ultimate Pulsar Processing Instrument

Details GUPPI: Green Bank Ultimate Pulsar Processing Instrument GUPPI: Green Bank Ultimate Pulsar Processing Instrument

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21460508r&link_type=abstract

American Astronomical Society, AAS Meeting #214, #605.08

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Scientific paper

The high precision radio pulsar timing required for gravitational wave detection experiments (like NANOGrav) and gravitational theory or neutron star equation-of-state tests demands that pulse phase be measured to precisions of 0.01% of the pulse period, or tens to hundreds of nano-seconds for millisecond pulsars (MSPs). This requirement means high precision instrumentation. At NRAO we are developing a state-of-the-art pulsar backend called GUPPI for these scientific problems. GUPPI provides wide bandwidth (up to 800 MHz), high dynamic range (8-bit sampling), substantially improved interference resistance (compared to all other GBT pulsar instruments), and full polarization capabilities. Currently it is being commissioned as a fully supported facility instrument for the GBT in a digital filterbank (i.e. incoherent dedispersion) mode. Within the next six months full coherent dedispersion capabilities are planned.

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