| Autor: |
Benford, D. J., Ames, T. A., Chervenak, J. A., Grossman, E. N., Irwin, K. D., Khan, S. A., Maffei, B., Moseley, S. H., Pajot, F., Phillips, T. G., Renault, J.-C., Reintsema, C. D., Rioux, C., Shafer, R. A., Staguhn, J. G., Vastel, C., Voellmer, G. M. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2002, Vol. 605 Issue 1, p589, 4p |
| Abstrakt: |
We present performance results based on the first astronomical use of multiplexed superconducting bolometers. The Fabry-Perot Interferometer Bolometer Research Experiment (FIBRE) is a broadband submillimeter spectrometer that achieved first light in June 2001 at the Caltech Submillimeter Observatory (CSO). FIBRE's detectors are superconducting transition edge sensor (TES) bolometers read out by a SQUID multiplexer. The Fabry-Perot uses a low resolution grating to order sort the incoming light. A linear bolometer array consisting of 16 elements detects this dispersed light, capturing 5 orders simultaneously from one position on the sky. With tuning of the Fabry-Perot over one free spectral range, a spectrum covering Δλ/λ = 1/7 at a resolution of δλ/λ ≈ 1/1200 can be acquired. This spectral resolution is sufficient to resolve Doppler-broadened line emission from external galaxies. FIBRE operates in the 350 µm and 450 µm bands. These bands cover line emission from the important star formation tracers neutral carbon [CI] and carbon monoxide (CO). We have verified that the multiplexed bolometers are photon noise limited even with the low power present in moderate resolution spectrometry. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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