2023/01/12 by Sanway Chatterjee, Sayan Basu, Chatterjee, Sanway +3
Physics and Astronomy · #85-11 #Astrophysics and Cosmic Phenomena #Astrophysics of Galaxies (astro-ph.GA) #E.0 #FOS: Physical sciences #Ionosphere and magnetosphere dynamics #Radio Astronomy Observations and Technology
paper · pdf · doi:10.48550/arxiv.2301.05188
openalex publication_date 2023/01/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present the source structure analysis of 11 calibrator sources in the Southern Hemisphere at 2.3 (S-band) and 8.4 GHz (X-band). We used multi-epoch very long baseline interferometry source maps available in the radio fundamental catalog to analyse jet-structure variability and also used fluxes from the Goddard Space Flight Center database to see whether these two complement each other or not. Also, total fluxes from the maps were plotted with the fluxes from the database. The S/X-band light curve analysis provides a more clear picture of the structural variability at the S/X-band also indicates the possibility of the "core-shift" phenomenon. We found jet-like structures in the majority of the sources in the sample.