A NEW METHOD FOR MAKING MAPS WITH UNSTABLE RADIO INTERFEROMETERS

被引：296

作者：

CORNWELL, TJ ^{[1
]}

WILKINSON, PN ^{[1
]}

机构：

[1] UNIV MANCHESTER,NUFFIELD RADIO ASTRON LABS,MACCLESFIELD SK11 9DL,CHESHIRE,ENGLAND

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1981年 / 196卷 / 03期

关键词：

Radio telescopes - Signal to noise ratio;

D O I：

10.1093/mnras/196.4.1067

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new method for making 'hybrid' maps using data from unstable interferometers. Our approach is based on correcting errors occurring at individual telescopes, and is more general than previous ones in that it allows for different degrees of instability at each telescope as well as for varying signal-to-noise ratios in the visibility data on each baseline. The method was developed, and will be used, for the analysis of the data from the Jodrell Bank Multi-Telescope Radio-linked Interferometer (MTRLI). We show the results of tests on simulated data to indicate the quality of maps which can be made with the MTRLI using the new method, and present a hybrid map of the quasar 3C 309.1 made from actual MTRLI data at 1666 MHz. © Royal Astronomical Society.

引用

页码：1067 / 1086

页数：20

共 17 条

[1]

BAARS JWM, 1977, ASTRON ASTROPHYS, V61, P99

[2] APERTURE SYNTHESIS WITHOUT PHASE MEASUREMENTS [J].

BALDWIN, JE ;

WARNER, PJ .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1976, 175 (02) :345-353

[3] METHOD OF MAPPING COMPACT STRUCTURE IN RADIO-SOURCES USING VLBI OBSERVATIONS [J].

COTTON, WD .

ASTRONOMICAL JOURNAL, 1979, 84 (08) :1122-1128

[4] THE JODRELL-BANK RADIO-LINKED INTERFEROMETER NETWORK [J].

DAVIES, JG ;

ANDERSON, B ;

MORISON, I .

NATURE, 1980, 288 (5786) :64-66

[5] EARTH ROTATION APERTURE SYNTHESIS [J].

FOMALONT, EB .

PROCEEDINGS OF THE IEEE, 1973, 61 (09) :1211-1218

[6]

FORT DN, 1976, ASTRON ASTROPHYS, V50, P19

[7]

Hogbom J. A., 1974, Astronomy and Astrophysics Supplement Series, V15, P417

[8] A PHASE SENSITIVE INTERFEROMETER TECHNIQUE FOR THE MEASUREMENT OF THE FOURIER TRANSFORMS OF SPATIAL BRIGHTNESS DISTRIBUTIONS OF SMALL ANGULAR EXTENT [J].

JENNISON, RC .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1958, 118 (03) :276-284

[9]

JENNISON RC, 1953, THESIS VICTORIA U MA

[10] MTRLI OBSERVATIONS OF THE DOUBLE QSO AT 408 MHZ [J].

NOBLE, RG ;

WALSH, D .

NATURE, 1980, 288 (5786) :69-70

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