Title :
Timing of optical pulsars with two high time resolution photometers at Asiago and NTT
Author :
Barbieri, Cesare ; Naletto, Giampiero ; Shearer, Andy ; Zampieri, Luca ; Germanà, Claudio ; Gradari, Serena ; Codogno, Giacomo
Author_Institution :
Dept. of Astron., Univ. of Padua, Padova, Italy
Abstract :
We have built two single photon very high speed photometers (Aqueye for the Asiago 1.8m telescope and Iqueye for the 3.5m ESO NTT) as prototypes of a `quantum´ photometer for the European Extremely Large Telescope (E-ELT) The two photometers are the most accurate `time machines´ available to optical astronomy. Under the control of a GPS receiver and a Rubidium clock, the arrival time of each detected photon is referenced to UTC with a precision better than 500 picoseconds, continuously for hours of data acquisition. Light curves for three optical pulsars (Crab, B0540-69, Vela) will be reported. Results from simultaneous observations of the Crab pulsar with the Jodrell Bank RadioTelescope will also be reported.
Keywords :
X-ray sources (astronomical); astronomical telescopes; gamma-ray sources (astronomical); pulsars; stellar photometry; variable stars; Aqueye photometer; Asiago telescope; B0540-69; CM Tau; Crab; European Extremely Large Telescope; GPS receiver; HU Vel; NTT observatory; PSR B0540-69; Rubidium clock; Vela; high time resolution photometers; light curves; optical pulsar timing; quantum photometer; Observatories; Optical variables control;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050331
