DiFX: A Software Correlator for Very Long Baseline Interferometry Using Multiprocessor Computing Environments
نویسندگان
چکیده
منابع مشابه
DiFX: A Software Correlator for Very Long Baseline Interferometry Using Multiprocessor Computing Environments
We describe the development of an FX-style correlator for very long baseline interferometry (VLBI), implemented in software and intended to run in multiprocessor computing environments, such as large clusters of commodity machines (Beowulf clusters) or computers specifically designed for high-performance computing, such as multiprocessor shared-memory machines. We outline the scientific and pra...
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Phase-referencing allows phase calibration of VLBI data. Using regular observations of a nearby calibrator source, delay, delay-rate, and phase corrections can be derived and their eeects removed from the target source visibility data. This technique allows imaging much weaker objects than is possible via fringe-tting methods. We examine the main types of phase error in VLBI observations (geome...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 2007
ISSN: 0004-6280,1538-3873
DOI: 10.1086/513572