Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Charlot , Patrick"'
Aims: We computed a celestial reference frame (CRF) from Very Long Baseline Interferometry (VLBI) Global Observing System (VGOS) data after five years of regular observations (155 multi-baseline 24-hour VGOS sessions until 2024.0). In this paper we d
Externí odkaz:
http://arxiv.org/abs/2411.14956
Autor:
Gurvits, Leonid I., Cimo, Giuseppe, Dirkx, Dominic, Pallichadath, Vidhya, Akins, Alexander, Altobelli, Nicolas, Bocanegra-Bahamon, Tatiana M., Cazaux, Stephanie M., Charlot, Patrick, Duev, Dmitry A., Fayolle, Marie S., Fogasy, Judit, Frey, Sandor, Lainey, Valery, Calves, Guifre Molera, Perger, Krisztina, Pogrebenko, Sergey V., Said, N. Masdiana Md, Vallat, Claire, Vermeersen, Bert L. A., Visser, Pieter N. A. M., Wang, Kuo-Nung, Willner, Konrad
Planetary Radio Interferometry and Doppler Experiment (PRIDE) is a multi-purpose experimental technique aimed at enhancing the science return of planetary missions. The technique exploits the science payload and spacecraft service systems without req
Externí odkaz:
http://arxiv.org/abs/2311.04376
Autor:
Liu, Niu, Lambert, Sebastien, Charlot, Patrick, Zhu, Zi, Liu, Jia-Cheng, Jiang, Nan, Wan, Xiao-Sheng, Ding, Cheng-Yu
Publikováno v:
A&A 652, A87 (2021)
We extend previous works by considering two additional radio frequencies (K band and X/Ka band) with the aim to study the frequency dependence of the source positions and its potential connection with the physical properties of the underlying AGN. We
Externí odkaz:
http://arxiv.org/abs/2105.12270
Autor:
Venturi, Tiziana, Paragi, Zsolt, Lindqvist, Michael, Bartkiewicz, Anna, Beswick, Rob, Bogdanović, Tamara, Brisken, Walter, Charlot, Patrick, Colomer, Francisco, Conway, John, Frey, Sándor, Guirado, José Carlos, Gurvits, Leonid, van Langevelde, Huib, Lobanov, Andrei, McKean, John, Morganti, Raffaella, Muxlow, Tom, Pérez-Torres, Miguel, Rygl, Kazi, Schulz, Robert, Szomoru, Arpad, de Vicente, Pablo, An, Tao, Anglada, Guillem, Argo, Megan, Azulay, Rebecca, van Bemmel, Ilse, Bocanegra, Tatiana, Boccardi, Biagina, Castangia, Paola, Chibueze, James, Cimò, Giuseppe, Climent, Juan-Bautista, Deane, Roger, Deller, Adam, Dodson, Richard, Duev, Dmitry, Etoka, Sandra, Fenech, Danielle, Gabányi, Krisztina, Gabuzda, Denise, Garrett, Michael, Gawroński, Marcin, Ghirlanda, Giancarlo, Giroletti, Marcello, Goddi, Ciriaco, Gómez, Jose Luis, Gray, Malcolm, Greaves, Jane, Hessels, Jason, van der Horst, Alexander, Hunter, Todd, Laing, Robert, Lal, Dharam Vir, Lambert, Sébastien, Loinard, Laurent, Marcote, Benito, Merloni, Andrea, Miller-Jones, James, Calvés, Guifré Molera, Moscadelli, Luca, Olofsson, Hans, Petrov, Leonid, Pizzo, Roberto, Possenti, Andrea, Quiroga-Nuñez, Luis Henry, Reynolds, Cormac, Richards, Anita, Rioja, Maria, Sanna, Alberto, Savolainen, Tuomas, Sbarrato, Tullia, Spingola, Cristiana, Surcis, Gabriele, Trigilio, Corrado, Varenius, Eskil, Vlemmings, Wouter, van Velzen, Sjoert, van der Walt, Johan
This white paper describes the science case for Very Long Baseline Interferometry (VLBI) and provides suggestions towards upgrade paths for the European VLBI Network (EVN). The EVN is a distributed long-baseline radio interferometric array, that oper
Externí odkaz:
http://arxiv.org/abs/2007.02347
Autor:
Paragi, Zsolt, Godfrey, Leith, Reynolds, Cormac, Rioja, Maria, Deller, Adam, Zhang, Bo, Gurvits, Leonid, Bietenholz, Michael, Szomoru, Arpad, Bignall, Hayley, Boven, Paul, Charlot, Patrick, Dodson, Richard, Frey, Sandor, Garrett, Michael, Imai, Hiroshi, Lobanov, Andrei, Reid, Mark, Ros, Eduardo, van Langevelde, Huib, Zensus, J. Anton, Zheng, Xing Wu, Alberdi, Antxon, Agudo, Ivan, An, Tao, Argo, Megan, Beswick, Rob, Biggs, Andy D., Brunthaler, Andreas, Campbell, Robert M., Cimo, Giuseppe, Colomer, Francisco, Corbel, Stephane, Conway, John, Cseh, David, Deane, Roger, Falcke, Heino, Gabanyi, Krisztina, Gawronski, Marcin, Gaylard, Michael, Giovannini, Gabriele, Giroletti, Marcello, Goddi, Ciriaco, Goedhart, Sharmila, Gomez, Jose L., Gunn, Alastair, Jung, Taehyun, Kharb, Preeti, Klockner, Hans-Rainer, Kording, Elmar, Kovalev, Yurii Yu., Kunert-Bajraszewska, Magdalena, Lindqvist, Michael, Lister, Matt, Mantovani, Franco, Marti-Vidal, Ivan, Mezcua, Mar, McKean, John, Middelberg, Enno, Miller-Jones, James, Moldon, Javier, Muxlow, Tom, O'Brien, Tim, Pérez-Torres, Miguel, Pogrebenko, Sergei, Quick, Jonathan, Rushton, Anthony P., Schilizzi, Richard, Smirnov, Oleg, Sohn, Bong Won, Surcis, Gabriele, Taylor, Greg, Tingay, Steven, Tudose, Valeriu, van der Horst, Alexander, van Leeuwen, Joeri, Venturi, Tiziana, Vermeulen, Rene, Vlemmings, Wouter, de Witt, Aletha, Wucknitz, Olaf, Yang, Jun
Adding VLBI capability to the SKA arrays will greatly broaden the science of the SKA, and is feasible within the current specifications. SKA-VLBI can be initially implemented by providing phased-array outputs for SKA1-MID and SKA1-SUR and using these
Externí odkaz:
http://arxiv.org/abs/1412.5971
Autor:
Collaborators, Roger, Pierre-Marie, Montera, Eve, Lesselingue, Diane, Troadec, Nathalie, Charlot, Patrick, Simand, Agnès, Rancezot, Agnès, Pantaloni, Olivier, Guichard, Thomas, Dautezac, Véronique, Landais, Cécile, Assi, Frédéric, Levent, Thierry
Publikováno v:
Clinical Infectious Diseases, 2019 Aug 01. 69(3), 466-472.
Externí odkaz:
https://www.jstor.org/stable/26852027
Publikováno v:
Dans Proceedings IAU Symposium No. 248, 2008 - A Giant Step: from Milli- to Micro-arcsecond Astrometry, Shangai : Chine (2007)
The space astrometry mission GAIA will construct a dense optical QSO-based celestial reference frame. For consistency between the optical and radio positions, it will be important to align the GAIA frame and the International Celestial Reference Fram
Externí odkaz:
http://arxiv.org/abs/0711.3455
Autor:
de Witt, Aletha1 (AUTHOR) alet@hartrao.ac.za, Charlot, Patrick2 (AUTHOR) patrick.charlot@u-bordeaux.fr, Gordon, David3 (AUTHOR) david.gordon126.civ@us.navy.mil, Jacobs, Christopher S.4 (AUTHOR) christopher.s.jacobs@jpl.nasa.gov
Publikováno v:
Universe (2218-1997). Jul2022, Vol. 8 Issue 7, pN.PAG-N.PAG. 23p.
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Autor:
de Witt, Aletha, Basu, Sayan, Charlot, Patrick, Gordon, David, Jacobs, Christopher, Johnson, Megan, Krásná, H, Le Bail, K, Shu, Fengchun, Titov, O, Schartner, M
Publikováno v:
25th Working Meeting of the European VLBI Group for Geodesy and Astrometry (EVGA)
25th Working Meeting of the European VLBI Group for Geodesy and Astrometry (EVGA), Mar 2021, Cyberspace, France
25th Working Meeting of the European VLBI Group for Geodesy and Astrometry (EVGA), Mar 2021, Cyberspace, France
International audience; Catalogs of positions of compact extragalactic radio sources, including the ICRF-3, are generally weaker in the south by factors of 2 or more in both density and precision. In 2018 we started a campaign to improve the S/X cele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::9332192865d39c6352630cf946d27812
https://hal.archives-ouvertes.fr/hal-03453927/file/deWitt_version4.pdf
https://hal.archives-ouvertes.fr/hal-03453927/file/deWitt_version4.pdf