Zobrazeno 1 - 10
of 463
pro vyhledávání: '"Mckean, John"'
Autor:
Glikman, Eilat, Rusu, Cristian E., Chen, Geoff C. -F., Chan, James Hung-Hsu, Spingola, Cristiana, Stacey, Hannah, McKean, John, Berghea, Ciprian T., Djorgovski, S. G., Graham, Matthew J., Stern, Daniel, Urrutia, Tanya, Lacy, Mark, Secrest, Nathan J., O'Meara, John M.
We present the discovery of a gravitationally lensed dust-reddened QSO at z = 2.517, identified in a survey for QSOs by infrared selection. Hubble Space Telescope imaging reveals a quadruply lensed system in a cusp configuration, with a maximum image
Externí odkaz:
http://arxiv.org/abs/2211.03866
Autor:
Chen, Geoff C. -F., Fassnacht, Christopher D., Suyu, Sherry H., Koopmans, Léon V. E., Lagattuta, David J., McKean, John P., Auger, Matt W., Vegetti, Simona, Treu, Tommaso
Strongly lensed quasars can provide measurements of the Hubble constant ($H_{0}$) independent of any other methods. One of the key ingredients is exquisite high-resolution imaging data, such as Hubble Space Telescope (HST) imaging and adaptive-optics
Externí odkaz:
http://arxiv.org/abs/2107.10304
Autor:
Shen, Lu, Lemaux, Brian C., Lubin, Lori M., Cucciati, Olga, Fevre, Olivier Le, Liu, Guilin, Fang, Wenjuan, Pelliccia, Debora, Tomczak, Adam, McKean, John, Miller, Neal A., Fassnacht, Christopher D., Gal, Roy, Hung, Denise, Hathi, Nimish, Bardelli, Sandro, Vergani, Daniela, Zucca, Elena
Radio Active Galactic Nuclei (RAGNs) are mainly found in dense structures (i.e., clusters/groups) at redshifts of z$<$2 and are commonly used to detect protoclusters at higher redshift. Here, we attempt to study the host and environmental properties
Externí odkaz:
http://arxiv.org/abs/2103.03441
Autor:
Enzi, Wolfgang, Murgia, Riccardo, Newton, Oliver, Vegetti, Simona, Frenk, Carlos, Viel, Matteo, Cautun, Marius, Fassnacht, Christopher D., Auger, Matt, Despali, Giulia, McKean, John, Koopmans, Léon V. E., Lovell, Mark
Publikováno v:
Mon.Not.Roy.Astron.Soc. 506 (2021), 4, 5848-5862
We derive joint constraints on the warm dark matter (WDM) half-mode scale by combining the analyses of a selection of astrophysical probes: strong gravitational lensing with extended sources, the Lyman-$\alpha$ forest, and the number of luminous sate
Externí odkaz:
http://arxiv.org/abs/2010.13802
Autor:
Shen, Lu, Liu, Guilin, Zhang, Mengfei, Lemaux, Brian C., Lubin, Lori M., Pelliccia, Debora, Moravec, Emily, Golden-Marx, Emmet G., Zhou, Hongyan, Fang, Wenjuan, Tomczak, Adam, McKean, John, Miller, Neal A., Fassnacht, Christopher D., Wu, Po-Feng, Kocevski, Dale D., Gal, Roy R., Hung, Denise, Squires, Gordon K
Recent hydrodynamic simulations and observations of radio jets have shown that the surrounding environment has a large effect on their resulting morphology. To investigate this we use a sample of 50 Extended Radio Active Galactic Nuclei (ERAGN) detec
Externí odkaz:
http://arxiv.org/abs/2009.03343
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:
Powell, Devon, Vegetti, Simona, McKean, John P., Spingola, Cristiana, Rizzo, Francesca, Stacey, Hannah R.
We present a new gravitational lens modelling technique designed to model high-resolution interferometric observations with large numbers of visibilities without the need to pre-average the data in time or frequency. We demonstrate the accuracy of th
Externí odkaz:
http://arxiv.org/abs/2005.03609