Restoration of radio image of non coherent radio sources, basing on measured visibility function

Author

Koshovy, V.V. ; Lozynsky, A.B. ; Romanishin, I.M. ; Romancev, Y.V.

Author_Institution

Karpenko Physico-Mech. Inst., Acad. of Sci., Lvov, Ukraine

fYear

1996

fDate

10-13 Sep 1996

Firstpage

457

Lastpage

460

Abstract

A new multicircle method of radio image restoration of radio sources, based on measured by radiointerferometric methods visibility function, is proposing. The algorithm of determination the number of the circles, their angular diameter and flux density, based on Fourier-Bessel series, is shown. The radio image of Cas A was restored on data, obtained from the measurements of this source. These measurements were performed on short-base (up to 2000 D/λ) interferometer URAN-3. As has been found, the model of the large-scale structure, deducted from the measurements on the meter waveband, is inconsistent with the results, obtained on decameter wavelengths

Keywords

radioastronomical techniques; radiosources (astronomical); radiowave interferometry; space research; supernova remnants; Cas A; Fourier-Bessel series; algorithm; measurement technique; multicircle method; noncoherent radio source; radio image; radio image restoration; radio imaging; radio interferometry; radioastronomy; radiointerferometric method; visibility function; Image restoration;

fLanguage

English

Publisher

ieee

Conference_Titel

Mathematical Methods in Electromagnetic Theory, 1996., 6th International Conference on

Conference_Location

Lviv

Print_ISBN

0-7803-3291-1

Type

conf

DOI

10.1109/MMET.1996.565760

Filename

565760