371 Conferences false [["0", "Code of Conduct"], ["1", "Conference Proceedings Material"], ["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] 6c9e606df0845ea84b327fc5f7fd6dee 14 evn2024@mpifr.de <h1>The EVN Symposium</h1> <p>The European VLBI Network Symposium is the main forum for discussion of the latest Very Long Baseline Interferometry scientific results and technical and technological developments within the EVN member countries. The 16th EVN Symposium and Users meeting, hosted by the Max-Planck-Institut f&uuml;r Radiostronomie, took place in Bonn in September 2-6, 2024.</p> <p><img alt="" src="https://events.mpifr-bonn.mpg.de/indico/event/371/picture/25.png" style="height:450px; width:600px" /></p> <p><em>Informal group picture, taken on September 3, 2024 (Aleksei Nikonov)</em></p> <p style="text-align:center"><img alt="Poster thumbnail" src="https://events.mpifr-bonn.mpg.de/indico/event/371/picture/10.webp" style="height:452px; width:320px" /></p> <p style="text-align:center"><span style="font-size:11px"><em>Conference poster (for PDF version see the poster menu page).</em></span></p> <p>The covered topics included:</p> <ul> <li>Active galactic nuclei and relativistic outflows</li> <li>Starburst galaxies, extragalactic masers, and supernovae</li> <li>Stellar evolution and stellar masers</li> <li>Transient sources and pulsars</li> <li>Astrometric, geodetic &amp; space applications of VLBI</li> <li>VLBI technology developments</li> <li>Users feedback</li> <li>Current and future VLBI facilities and international cooperation</li> </ul> <p>Invited speakers:</p> <ul> <li>Markus Ackermann (DESY, Zeuthen, Germany)</li> <li>Bia Boccardi (MPIfR, Bonn, Germany)</li> <li>Roger Deane (University of Witwatersrand, Johannesburg, South Africa)</li> <li>Simon Garrington (Jodrell Bank Observatory, Manchester, United Kingdom)</li> <li>Giancarlo Ghirlanda (Osservatorio di Brera, Milano, Italy)</li> <li>Preeti Kharb (Tata Institute for Fundamental Research, Pune, India)</li> <li>Michela Mapelli (Universit&auml;t Heidelberg, Germany)</li> <li>Benito Marcote (Joint Institute for VLBI-ERIC, Dwingeloo, The Netherlands)</li> <li>James Miller-Jones (Curtin University, Melbourne, Australia)</li> <li>Suma Murthy&nbsp;(Joint Institute for VLBI-ERIC, Dwingeloo, The Netherlands)</li> <li>Alexander Plavin (Harvard-Smithsonian Centre for Astrophysics, Cambridge, MA, USA)</li> <li>Eduardo Ros (MPIfR, Bonn, Germany)</li> <li>Gabriele Surcis (Osservatorio di Cagliari, Italy)</li> <li>Kiyoaki Wajima (KASI Daejeon, Korea &amp; Shanghai Observatory, PR China)</li> <li>Benjamin Winkel (MPIfR, Bonn, Germany)</li> <li>Simona Vegetti (MPA, Garching, Germany)</li> <li>Jun Yang (Chalmers University of Technology, G&ouml;teborg, Sweden)</li> </ul> <p>Scientific Organising Committee:</p> <ul> <li>Tao An (Shanghai Observatory, China)</li> <li>Pikky Atri (ASTRON, Dwingeloo, Netherlands)</li> <li>Paola Castangia (INAF Cagliari, Italy)</li> <li>Talvikki Hovatta (Aalto University, Espoo, Finland)</li> <li>Marcin Gawroński (University of Torun, Poland)</li> <li>Michael Lindqvist (Onsala Space Observatory, Sweden)</li> <li>Andrei Lobanov (MPIfR, Bonn, Germany; chair)</li> <li>Sara Motta (INAF Milano, Italy)</li> <li>Tom Muxlow (University of Manchester, UK)</li> <li>Zsolt Paragi (JIV-ERIC, Dwingeloo, Netherlands)</li> <li>Kazi Rygl (INAF Bologna, Italy)</li> </ul> <p>Local Organising Committee:</p> <ul> <li>Si&acirc;n Adey</li> <li>Vieri Bartolini</li> <li>Petra Benke</li> <li>Lena Debbrecht</li> <li>Sergio Dzib-Quijano</li> <li>JongSeo Kim</li> <li>Galina Lipunova</li> <li>Andrei P. Lobanov</li> <li>Jan R&ouml;der</li> <li>Eduardo Ros (chair)</li> <li>Saurabh</li> </ul> <p>Conference proceedings will be published as result of the conference presentations and discussion (see the menu to the left).&nbsp; Stay tuned for more information!</p> <h2><img alt="" src="https://events.mpifr-bonn.mpg.de/indico/event/371/picture/0.png" style="height:82px; width:700px" /></h2> False CJD Bonn Castell

Graurheindorfer Str. 149, 53117 Bonn

2024-09-02T09:00:00 2024-09-06T15:00:00 2023-11-22T16:57:26 2024-12-30T17:22:04 Europe/Berlin 4dffa7689a6089770a09283de01dfe1c 6c9e606df0845ea84b327fc5f7fd6dee 32 false [["0", "Code of Conduct"], ["1", "Conference Proceedings Material"], ["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] University of Science and Technology, Korea / Korea Astronomy and Space Science Institute e430fe2fd0455f606740ee57d14fa633 University of Science and Technology, Korea / Korea Astronomy and Space Science Institute e430fe2fd0455f606740ee57d14fa633 Korea Astronomy and Space Science Institute (KASI) / University of Science and Technology (UST), Korea 6ce305670dc99d2a8312d751ad7ddd5b CJD Bonn Castell

Graurheindorfer Str. 149, 53117 Bonn

00:20 A blazar 3C 454.3 ($z=0.859$) has been extensively investigated in multi-wavelength high-resolution polarization studies, showing polarization variations in milli-arcsecond (mas) scale. We aim to investigate polarimetric characteristics on the blazar 3C 454.3 at 22-129 GHz using decadal (2011-2022) data sets. In addition, we also aim to delve into the origin of the polarization flare in 2019. The corresponding data sets were obtained from the monitoring programs of the Korean VLBI Network (KVN) single-dish and of the 43-GHz Very Long Baseline Array (VLBA). Using those data, we compared the consistency of the measurements between scales at mas and arcsecond. We also estimated the Faraday rotation measure (RM) by fitting a linear function and computing it at each of the adjacent frequency pairs. Relations between polarimetric measurements indicate a preferred polarization angle when the source is highly polarized. By comparing scales between mas and arcsecond at 43 GHz, we find consistency in polarized emission (flux density and polarization angle), indicating negligible convolution effect on polarization angle by the extended jet of 3C 454.3. While the linear fit yields an order of RM $\sim10^{3}~{\rm rad\,m^{-2}}$, $\rm |RM|$ from each frequency pair tends to be larger at higher frequency pair, indicating varying RM as a function of frequency. We found an interesting, notable flaring event in polarized emission in 2019 at the frequency range of 22-129 GHz from the KVN single-dish data. During the flare, the observed polarization angles rotate from $\sim150^{\circ}$ to $\sim100^{\circ}$ at all frequencies with chromatic $m_{\rm p}$. We suggest the polarization flare in 2019 is attributed to the shock-shock interaction in Region C based on the observed $m_{\rm p}$ and $\chi_{\rm obs}$, and also the Faraday rotation measure. Change in the viewing angle of the jet lacks in explaining the increased brightness temperature, indicating an additional particle acceleration in Region C. paper doc https://events.mpifr-bonn.mpg.de/indico/images/word.png word file ppt https://events.mpifr-bonn.mpg.de/indico/images/powerpoint.png powerpoint file pdf https://events.mpifr-bonn.mpg.de/indico/images/pdf_small.png pdf file odt https://events.mpifr-bonn.mpg.de/indico/images/writer.png writer file odp https://events.mpifr-bonn.mpg.de/indico/images/impress.png presentation file ods https://events.mpifr-bonn.mpg.de/indico/images/calc.png spreadsheet file other https://events.mpifr-bonn.mpg.de/indico/images/file_small.png unknown type file link https://events.mpifr-bonn.mpg.de/indico/images/link.png link 0 doc https://events.mpifr-bonn.mpg.de/indico/images/word.png word file ppt https://events.mpifr-bonn.mpg.de/indico/images/powerpoint.png powerpoint file pdf https://events.mpifr-bonn.mpg.de/indico/images/pdf_small.png pdf file odt https://events.mpifr-bonn.mpg.de/indico/images/writer.png writer file odp https://events.mpifr-bonn.mpg.de/indico/images/impress.png presentation file ods https://events.mpifr-bonn.mpg.de/indico/images/calc.png spreadsheet file other https://events.mpifr-bonn.mpg.de/indico/images/file_small.png unknown type file link https://events.mpifr-bonn.mpg.de/indico/images/link.png link 1 doc https://events.mpifr-bonn.mpg.de/indico/images/word.png word file ppt https://events.mpifr-bonn.mpg.de/indico/images/powerpoint.png powerpoint file pdf https://events.mpifr-bonn.mpg.de/indico/images/pdf_small.png pdf file odt https://events.mpifr-bonn.mpg.de/indico/images/writer.png writer file odp https://events.mpifr-bonn.mpg.de/indico/images/impress.png presentation file ods https://events.mpifr-bonn.mpg.de/indico/images/calc.png spreadsheet file other https://events.mpifr-bonn.mpg.de/indico/images/file_small.png unknown type file link https://events.mpifr-bonn.mpg.de/indico/images/link.png link poster doc https://events.mpifr-bonn.mpg.de/indico/images/word.png word file ppt https://events.mpifr-bonn.mpg.de/indico/images/powerpoint.png powerpoint file pdf https://events.mpifr-bonn.mpg.de/indico/images/pdf_small.png pdf file odt https://events.mpifr-bonn.mpg.de/indico/images/writer.png writer file odp https://events.mpifr-bonn.mpg.de/indico/images/impress.png presentation file ods https://events.mpifr-bonn.mpg.de/indico/images/calc.png spreadsheet file other https://events.mpifr-bonn.mpg.de/indico/images/file_small.png unknown type file link https://events.mpifr-bonn.mpg.de/indico/images/link.png link 2026-03-08 2026-03-09