AN IMAGING ALGORITHM USING THE BISPECTRUM IN RADIO INTERFEROMETRY

Authors
KATAGIRI S MORITA KI KAWAGUCHI N HAYAKAWA M
Citation
S. Katagiri et al., AN IMAGING ALGORITHM USING THE BISPECTRUM IN RADIO INTERFEROMETRY, Publications of the Astronomical Society of Japan, 49(1), 1997, pp. 123-129
Citations number
15
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Publications of the Astronomical Society of Japan → ACNP
ISSN journal
00046264
Volume
49
Issue
1
Year of publication
1997
Pages
123 - 129
Database
ISI
SICI code
0004-6264(1997)49:1<123:AIAUTB>2.0.ZU;2-S
Abstract
We present a maximum-entropy imaging algorithm using the bispectrum ob served with radio interferometers. It is iterative and based on the st eepest-ascent method. Imaging simulation tests show that this algorith m can reconstruct more reliable images of weak, extended sources than can the conventional self-calibration method. An example application o f this algorithm to data of the Nobeyama Millimeter Array is given.