PUPPI
(Puerto Rican Ultimate Pulsar Processing Instrument)
(Arecibo radio-telescope instrument aimed at observing pulsars)
PUPPI (Puerto Rican Ultimate Pulsar Processing Instrument)
was (or is) a back end instrument instrument for the Arecibo Telescope,
working in conjunction with one of the telescope's receivers,
to observe pulsar timing over a wide (800 MHz) band.
It was a project of National Radio Astronomy Observatory (NRAO) and is a clone of GUPPI.
The Arecibo Telescope is no longer operational, as of late 2020.
I'm not sure if PUPPI was used as recently as 2020: it may be that
new equipment and/or software had replaced it.
(instrument,pulsars,radio,timing)
Further reading:
https://ui.adsabs.harvard.edu/abs/2017AAS...22913705V/abstract
https://ui.adsabs.harvard.edu/abs/2013ApJ...775...51D/abstract
https://ui.adsabs.harvard.edu/abs/2015ApJ...806..140K/abstract
https://ui.adsabs.harvard.edu/abs/2019ApJ...881..166M/abstract
https://dcc.ligo.org/public/0092/G1200649/001/Lazio-GWADW2012-Telescopes.pdf
https://ui.adsabs.harvard.edu/abs/2008SPIE.7019E..1DD/abstract
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