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Wideband Spectrometers for Millimetre Wavelengths

Published online by Cambridge University Press:  14 August 2015

B. J. Robinson
B. J. Robinson*
Affiliation:
Division of Radiophysics, CSIRO, Sydney, Australia

Extract

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Millimetre-wave spectral lines show a wide range of linewidths, from 0.1 km s-1 in dark clouds to 30 km s-1 in some massive molecular clouds; at 100 GHz the corresponding Doppler widths range from 33 kHz to 10 MHz. SiO masers at 86 GHz have two lines typically 1 MHz wide spaced by 6 MHz. For most applications a resolution of 100 or 250 kHz is suitable.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 619 - 623
Copyright
Copyright © Reidel 1980 

References

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