Applications of the Source-Frequency Phase-Referencing Technique for ngEHT Observations
نویسندگان
چکیده
The source-frequency phase-referencing (SFPR) technique has been demonstrated to have great advantages for mm-VLBI observations. By implementing simultaneous multi-frequency receiving systems on the next-generation Event Horizon Telescope (ngEHT) antennas, it is feasible carry out a frequency phase transfer (FPT) which could calibrate non-dispersive propagation errors and significantly increase coherence in visibility data. Such an offers efficient approach weak source or structure detection. SFPR also makes possible high-precision astrometry, including core-shift measurements up sub-mm wavelengths Sgr A*, M 87*, etc. We briefly discuss technical scheduling considerations future observations with ngEHT.
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ژورنال
عنوان ژورنال: Galaxies
سال: 2022
ISSN: ['2075-4434']
DOI: https://doi.org/10.3390/galaxies11010003