Precision Measurement of Optical Pulsation using a Cherenkov Telescope

Details Precision Measurement of Optical Pulsation using a Cherenkov Telescope Precision Measurement of Optical Pulsation using a Cherenkov Telescope

2006-04-19

arxiv.org/abs/astro-ph/0604411v1

Astropart.Phys. 26 (2006) 22-27

Astronomy and Astrophysics

Astrophysics

Accepted for publication in Astroparticle Physics, 14 pages, 7 figures

Scientific paper

10.1016/j.astropartphys.2006.04.

During 2003, a camera designed to measure the optical pulsations of pulsars was installed on a telescope of the H.E.S.S. array. The array is designed for gamma-ray astronomy in the ~100 GeV - 100 TeV energy regime. The aims of this exercise were two-fold: to prove the pulsar timing capabilities of H.E.S.S. on all relevant time-scales, and to explore the possibility of performing sensitive optical pulsar measurements using the ~100 m^2 mirror of a Cherenkov telescope. Measurements of the Crab pulsar with this instrument demonstrate an order of magnitude sensitivity improvement over previous attempts using Cherenkov telescopes. Here we describe the design and performance of the system and discuss design considerations for future instruments of this type.

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