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- W3204369929 abstract "We present VOLKS2, the second release of VLBI Observation for transient Localization Keen Searcher. The pipeline aims at transient search in regular VLBI observations as well as detection of single pulses from known sources in dedicated VLBI observations. The underlying method takes the idea of geodetic VLBI data processing, including fringe fitting to maximize the signal power and geodetic VLBI solving for localization. By filtering the candidate signals with multiple windows within a baseline and by cross matching with multiple baselines, RFIs are eliminated effectively. Unlike the station autospectrum-based method, RFI flagging is not required in the VOLKS2 pipeline. EVN observation (EL060) is carried out, so as to verify the pipelines detection efficiency and localization accuracy in the whole FoV. The pipeline is parallelized with MPI and further accelerated with GPU, so as to exploit the hardware resources of modern GPU clusters. We can prove that, with proper optimization, VOLKS2 could achieve comparable performance as autospectrum-based pipelines. All the code and documents are publicly available, in the hope that our pipeline is useful for radio transient studies." @default.
- W3204369929 created "2021-10-11" @default.
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- W3204369929 date "2021-09-23" @default.
- W3204369929 modified "2023-09-25" @default.
- W3204369929 title "VOLKS2: A Transient Search and Localization Pipeline for VLBI Observations" @default.
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- W3204369929 doi "https://doi.org/10.3847/1538-3881/ac1d44" @default.
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