Results 121 to 130 of about 33,296 (260)

The whole-earth array ‒ Developments in very-long-baseline interferometry [PDF]

, 1971
Radio astronomers, in common with many others who work with radio antennas, have always felt rather handicapped by the basic physical relationship between the size of an antenna (measured in wavelengths) and its resolving power (or beamwidth): ΔΘ ~ λ/D ...
Moffet, Alan T.
core  

Analyses of celestial pole offsets with VLBI, LLR, and optical observations

, 2019
This work aims to explore the possibilities of determining the long-period part of the precession-nutation of the Earth with techniques other than very long baseline interferometry (VLBI).
Cheng, Yu-Ting, Liu, Jia-Cheng, Zhu, Zi
core   +1 more source

Short turn-around intercontinental clock synchronization using very-long-baseline interferometry [PDF]

During the past year work was accomplished to bring into regular operation a VLBI system for making intercontinental clock comparisons with a turn around of a few days from the time of data taking.
Henderson, R. B., Madrid, G. A., Yunck, T. P.   +2 more
core   +1 more source

Prospects of Detecting a Jet in Sagittarius A* with Very-long-baseline Interferometry

The Astrophysical Journal
Event Horizon Telescope (EHT) images of the horizon-scale emission around the Galactic center supermassive black hole Sagittarius A* (Sgr A*) favor accretion flow models with a jet component. However, this jet has not been conclusively detected.
Erandi Chavez, Sara Issaoun, Michael D. Johnson, Paul Tiede, Christian Fromm, Yosuke Mizuno   +5 more
doaj   +1 more source

Proposed satellite laser ranging and very long baseline interferometry sites for crustal dynamics investigations [PDF]

Recommendations are presented for a global network of 125 sites for geodetic measurements by satellite laser ranging and very long baseline interferometry. The sites were proposed on the basis of existing facilities and scientific value for investigation
Allenby, R. J., Frey, H. V., Lowman, P. D.   +2 more
core   +1 more source

Terrestrial very-long-baseline atom interferometry

EPJ Quantum Technology
Abstract: This summary of the second Terrestrial Very-Long-Baseline Atom Interferometry (TVLBAI) Workshop provides a comprehensive overview of our meeting held in London in April 2024 (Second Terrestrial Very-Long-Baseline Atom Interferometry Workshop, Imperial College, April 2024), building on the initial discussions during the inaugural workshop held
Abdalla, Adam, Abe, Mahiro, Abend, Sven, Abidi, Mouine, Aidelsburger, Monika, Alibabaei, Ashkan, Allard, Baptiste, Antoniadis, John, Arduini, Gianluigi, Augst, Nadja, Balamatsias, Philippos, Balaž, Antun, Banks, Hannah, Barcklay, Rachel L., Barone, Michele, Barsanti, Michele, Bason, Mark G., Bassi, Angelo, Bayle, Jean-Baptiste, Baynham, Charles F.A., Beaufils, Quentin, Beldjoudi, Sélyan, Belić, Aleksandar, Bennetts, Shayne, Bernabeu, Jose, Bertoldi, Andrea, Bigard, Clara, Bigelow, N.P., Bingham, Robert, Blas, Diego, Bobrick, Alexey, Boehringer, Samuel, Bogojević, Aleksandar, Bongs, Kai, Bortoletto, Daniela, Bouyer, Philippe, Brand, Christian, Buchmueller, Oliver, Buica, Gabriela, Calatroni, Sergio, Calmels, Léo, Canizares, Priscilla, Canuel, Benjamin, Caramete, Ana, Caramete, Laurentiu-Ioan, Carlesso, Matteo, Carlton, John, Carman, Samuel P., Carroll, Andrew, Casariego, Mateo, Chairetis, Minoas, Charmandaris, Vassilis, Chauhan, Upasna, Chen, Jiajun, Chiofalo, Maria Luisa Marilù, Ciampini, Donatella, Cimbri, Alessia, Cladé, Pierre, Coleman, Jonathon, Constantin, Florin Lucian, Contaldi, Carlo R., Corgier, Robin, Dash, Bineet, Davies, G.J., de Rham, Claudia, De Roeck, Albert, Derr, Daniel, Dey, Soumyodeep, Di Pumpo, Fabio, Djordjevic, Goran S., Döbrich, Babette, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Duspayev, Alisher, Easo, Sajan, Eby, Joshua, Efremov, Maxim, Elertas, Gedminas, Ellis, John, Entin, Nicholas, Fairhurst, Stephen, Fanì, Mattia, Fassi, Farida, Fayet, Pierre, Felea, Daniel, Feng, Jie, Flack, Robert, Foot, Chris, Freegarde, Tim, Fuchs, Elina, Gaaloul, Naceur, Gao, Dongfeng, Gardner, Susan, Garraway, Barry M., Garrido Alzar, Carlos L., Gauguet, Alexandre, Giese, Enno, Gill, Patrick, Giudice, Gian F., Glasbrenner, Eric P., Glick, Jonah, Graham, Peter W., Granados, Eduardo, Griffin, Paul F., Gué, Jordan, Guellati-Khelifa, Saïda, Gupta, Subhadeep, Gupta, Vishu, Hackermueller, Lucia, Haehnelt, Martin, Hakulinen, Timo, Hammerer, Klemens, Hanımeli, Ekim T., Harte, Tiffany, Hartmann, Sabrina, Hawkins, Leonie, Hees, Aurelien, Herbst, Alexander, Hird, Thomas M., Hobson, Richard, Hogan, Jason, Holst, Bodil, Holynski, Michael, Hosten, Onur, Hsu, Chung Chuan, Huang, Wayne Cheng-Wei, Hughes, Kenneth M., Hussain, Kamran, Hütsi, Gert, Iovino, Antonio, Isfan, Maria-Catalina, Janson, Gregor, Jeglič, Peter, Jetzer, Philippe, Jiang, Yijun, Juzeliūnas, Gediminas, Kaenders, Wilhelm, Kalliokoski, Matti, Kehagias, Alex, Kilian, Eva, Klempt, Carsten, Knight, Peter, Koley, Soumen, Konrad, Bernd, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Labiad, Hamza, Lan, Shau-Yu, Landragin, Arnaud, Landsberg, Greg, Langlois, Mehdi, Lanigan, Bryony, Leone, Bruno, Le Poncin-Lafitte, Christophe, Lellouch, Samuel, Lewicki, Marek, Lien, Yu-Hung, Lombriser, Lucas, Asamar, Elias Lopez, Lopez-Gonzalez, J. Luis, Lu, Chen, Luciano, Giuseppe Gaetano, Lundblad, Nathan, de J. López Monjaraz, Cristian, Lowe, Adam, Mackoit-Sinkevičienė, Mažena, Maggiore, Michele, Majumdar, Anirban, Makris, Konstantinos, Maleknejad, Azadeh, Marchant, Anna L., Mariotti, Agnese, Markou, Christos, Matthews, Barnaby, Mazumdar, Anupam, McCabe, Christopher, Meister, Matthias, Mentasti, Giorgio, Menu, Jonathan, Messineo, Giuseppe, Meyer-Hoppe, Bernd, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mishra, Abhay, Mitchell, Jeremiah, Morley, Gavin W., Mouelle, Noam, Müller, Jürgen, Newbold, David, Ni, Wei-Tou, Niehof, Christian, Noller, Johannes, Odžak, Senad, Oi, Daniel K.L.   +199 more
openaire   +3 more sources

Accessing a New Population of Supermassive Black Holes with Extensions to the Event Horizon Telescope

The Astrophysical Journal
The Event Horizon Telescope (EHT) has produced resolved images of the supermassive black holes (SMBHs) Sgr A* and M87*, which present the largest shadows on the sky.
Xinyue Alice Zhang, Angelo Ricarte, Dominic W. Pesce, Michael D. Johnson, Neil Nagar, Ramesh Narayan, Venkatessh Ramakrishnan, Sheperd Doeleman, Daniel C. M. Palumbo   +8 more
doaj   +1 more source

Dataset for 'Intercontinental comparison of optical atomic clocks through very long baseline interferometry'

, 2020
Marco Pizzocaro, Mamoru Sekido, Kazuhiro Takefuji, Hideki Ujihara, Hidekazu Hachisu, Nils Nemitz, Masanori Tsutsumi, Tetsuro Kondo, Eiji Kawai, Ryuichi Ichikawa, Kunitaka Namba, Yoshihiro Okamoto, Rumi Takahashi, Cecilia Clivati, Filippo Bregoli, Piero Barbieri, Alberto Mura, E. Cantoni, Giancarlo Cerretto, Filippo Levi, G. Maccaferri, Mauro Roma, C. Bortolotti, M. Negusini, R. Ricci, Gianpaolo Zacchiroli, J. Roda, J. Leute, Gérard Petit, Federico Perini, Davide Calonico, T. Ido   +31 more
openalex   +3 more sources

A Very Long Baseline Interferometry Calibrator Grid at 600 MHz for Fast Radio Transient Localizations with CHIME/FRB Outriggers

The Astrophysical Journal
The Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) Project has a new very long baseline interferometry (VLBI) Outrigger at the Green Bank Observatory (GBO), which forms a 3300 km baseline with CHIME operating at 400–800 MHz ...
Shion Andrew, Calvin Leung, Alexander Li, Kiyoshi W. Masui, Bridget C. Andersen, Kevin Bandura, Alice P. Curtin, Jane Kaczmarek, Adam E. Lanman, Mattias Lazda, Juan Mena-Parra, Daniele Michilli, Kenzie Nimmo, Aaron B. Pearlman, Mubdi Rahman, Vishwangi Shah, Kaitlyn Shin, Haochen Wang, (CHIME/FRB Collaboration)   +18 more
doaj   +1 more source

Automated geodetic Very Long Baseline Interferometry observation and data analysis system [PDF]

, 2014
Yasuhiro Koyama, Noriyuki Kurihara, Tetsuro Kondo, Mamoru Sekido, Y. Takahashi, Hitoshi Kiuchi, Kosuke Heki   +6 more
openalex   +1 more source