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A METHOD TO IMPROVE THE SENSITIVITY OF RADIO TELESCOPES

Author:
Lieu, Richard   Kibble, T. W. B.   Duan, Lingze  


Journal:
The Astrophysical Journal


Issue Date:
2014


Abstract(summary):

As an extension of the ideas of Hanbury-Brown and Twiss, a method is proposed to eliminate the phase noise of white chaotic light in the regime where it is dominant, and to measure the much smaller Poisson fluctuations from which the incoming flux can be reconstructed. The best effect is achieved when the timing resolution is finer than the inverse bandwidth of the spectral filter. There may be applications to radio astronomy at the phase noise dominated frequencies of 1-10 GHz, in terms of potentially increasing the sensitivity of telescopes by an order of magnitude.


Page:
67


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