Linear algorithms of multi-frequency image processing for VLBI |
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| Authors: | S F Likhachev V A Ladygin I A Guirin |
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| Institution: | (1) Astrospace Center of the Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia |
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| Abstract: | We consider linear algorithms of multi-frequency image synthesis and analysis for very-long baseline interferometry (VLBI).
Compared with the existing algorithms of multi-frequency synthesis, the developed algorithm allows one to obtain the spectral-index
map simultaneously with the map of a radio source for any value of the reference frequency within a given frequency band.
In addition, there exists an opportunity to obtain a spectral estimate for any given part of the image. Some examples of the
multi-frequency image retrieval for the quasar 3C84 are presented.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 49, No. 7, pp. 553–560, July 2006. |
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