{"id":4454,"date":"2024-09-08T18:42:24","date_gmt":"2024-09-08T16:42:24","guid":{"rendered":"https:\/\/www.oa-cagliari.inaf.it\/seminari\/advances-in-movie-reconstruction-in-vlbi-and-novel-alma-archiving\/"},"modified":"2024-09-08T18:42:24","modified_gmt":"2024-09-08T16:42:24","slug":"advances-in-movie-reconstruction-in-vlbi-and-novel-alma-archiving","status":"publish","type":"seminari","link":"https:\/\/www.oa-cagliari.inaf.it\/en\/seminars\/advances-in-movie-reconstruction-in-vlbi-and-novel-alma-archiving\/","title":{"rendered":"Advances in Movie Reconstruction in VLBI and Novel ALMA Archiving"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1829\" src=\"https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/Advances-in-movie-reconstruction-in-VLBI-and-novel-ALMA-archiving.png\" alt=\"Advances in movie reconstruction in VLBI and novel ALMA archiving\" width=\"500\" height=\"388\" srcset=\"https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/Advances-in-movie-reconstruction-in-VLBI-and-novel-ALMA-archiving.png 500w, https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/Advances-in-movie-reconstruction-in-VLBI-and-novel-ALMA-archiving-300x233.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>The Event Horizon Telescope (EHT) has extended the Very Long Baseline Interferometry (VLBI) technique to mm wavelengths, achieving the highest angular resolution in the history of ground-based astronomy. Because an interferometer incompletely samples the visibility domain, the inverse problem of determining an image from a measured set of visibilities is ill-posed. While this issue affects all interferometers, it is particularly challenging for a sparse array like the EHT, due to the relatively small number of radio telescopes capable of observing at high-radio frequencies.<br \/>\nIn this talk, I will present some of the cutting-edge algorithms we have developed to reconstruct full Stokes interferometric images, including \u2018dynamic\u2019 solutions (i.e. movies) of fast-evolving sources such as SgrA*. We tested these algorithms both on synthetic and real data of SgrA*.<br \/>\nI will also discuss our initial search for transients and super-slow pulsars in the Galactic Center. Finally, I will describe plans for a new archive of Active Galactic Nuclei (AGN) observed in full-polarization with ALMA during VLBI campaigns. The archive will be open to the astronomical community and will contain science-ready products, including full-Stokes images, light curves, and tabulated polarization properties of the observed AGNs.  <\/p>\n","protected":false},"template":"","class_list":["post-4454","seminari","type-seminari","status-publish","hentry","categorie_seminari-colloquium"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/seminari\/4454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/seminari"}],"about":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/types\/seminari"}],"wp:attachment":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/media?parent=4454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}