Zobrazeno 1 - 10
of 165
pro vyhledávání: '"Lemon, C. A."'
Autor:
Dux, F., Millon, M., Lemon, C., Schmidt, T., Courbin, F., Shajib, A. J., Treu, T., Birrer, S., Wong, K. C., Agnello, A., Andrade, A., Galan, A. A., Hjorth, J., Paic, E., Schuldt, S., Schweinfurth, A., Sluse, D., Smette, A., Suyu, S. H.
We report the discovery of the first example of an Einstein zig-zag lens, an extremely rare lensing configuration. In this system, J1721+8842, six images of the same background quasar are formed by two intervening galaxies, one at redshift $z_1 = 0.1
Externí odkaz:
http://arxiv.org/abs/2411.04177
Autor:
Keeley, Ryan E., Nierenberg, Anna M., Gilman, Daniel, Gannon, Charles, Birrer, Simon, Treu, Tommaso, Benson, Andrew J., Du, Xiaolong, Abazajian, K. N., Anguita, T., Bennert, V. N., Djorgovski, S. G., Gupta, K. K., Hoenig, S. F., Kusenko, A., Lemon, C., Malkan, M., Motta, V., Moustakas, L. A., Oh, M. S. H., Sluse, D., Stern, D., Wechsler, R. H.
This is the second in a series of papers in which we use JWST MIRI multiband imaging to measure the warm dust emission in a sample of 31 multiply imaged quasars, to be used as a probe of the particle nature of dark matter. We present measurements of
Externí odkaz:
http://arxiv.org/abs/2405.01620
Autor:
Nierenberg, A. M., Keeley, R. E., Sluse, D., Gilman, D., Birrer, S., Treu, T., Abazajian, K. N., Anguita, T., Benson, A. J., Bennert, V. N., Djorgovski, S. G., Du, X., Fassnacht, C. D., Hoenig, S. F., Kusenko, A., Lemon, C., Malkan, M., Motta, V., Moustakas, L. A., Stern, D., Wechsler, R. H.
The flux ratios of gravitationally lensed quasars provide a powerful probe of the nature of dark matter. Importantly, these ratios are sensitive to small-scale structure, irrespective of the presence of baryons. This sensitivity may allow us to study
Externí odkaz:
http://arxiv.org/abs/2309.10101
We present new broadband X-ray observations of the $z \sim 2.5$ lensed quasar 2MASS J1042+1641, combining $XMM$-$Newton$, $Chandra$ and $NuSTAR$ to provide coverage of the X-ray spectrum over the 0.3$-$40 keV bandpass in the observed frame, correspon
Externí odkaz:
http://arxiv.org/abs/2209.03381
Publikováno v:
A&A 668, A77 (2022)
We report periodic oscillations in the 15-year long optical light curve of the gravitationally lensed quasar QJ0158-4325. The signal is enhanced during a high magnification microlensing event undergone by the fainter lensed image of the quasar, betwe
Externí odkaz:
http://arxiv.org/abs/2207.00598
Autor:
Lemon, C., Anguita, T., Auger, M., Courbin, F., Galan, A., McMahon, R., Neira, F., Oguri, M., Schechter, P., Shajib, A., Treu, T.
We report the spectroscopic follow-up of 175 lensed quasar candidates selected using Gaia Data Release 2 observations following Lemon et al. 2019. Systems include 86 confirmed lensed quasars and a further 17 likely lensed quasars based on imaging and
Externí odkaz:
http://arxiv.org/abs/2206.07714
Autor:
Schmidt, T., Treu, T., Birrer, S., Shajib, A. J., Lemon, C., Millon, M., Sluse, D., Agnello, A., Anguita, T., Auger-Williams, M. W., McMahon, R. G., Motta, V., Schechter, P., Spiniello, C., Kayo, I., Courbin, F., Ertl, S., Fassnacht, C. D., Frieman, J. A., More, A., Schuldt, S., Suyu, S. H., Aguena, M., Andrade-Oliveira, F., Annis, J., Bacon, D., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Conselice, C., Costanzi, M., da Costa, L. N., Pereira, M. E. S., De Vicente, J., Desai, S., Doel, P., Everett, S., Ferrero, I., Friedel, D., García-Bellido, J., Gaztanaga, E., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., James, D. J., Kuehn, K., Lahav, O., Menanteau, F., Miquel, R., Palmese, A., Paz-Chinchón, F., Pieres, A., Malagón, A. A. Plazas, Prat, J., Rodriguez-Monroy, M., Romer, A. K., Sanchez, E., Scarpine, V., Sevilla-Noarbe, I., Smith, M., Suchyta, E., Tarle, G., To, C., Varga, T. N.
Gravitational time delays provide a powerful one step measurement of $H_0$, independent of all other probes. One key ingredient in time delay cosmography are high accuracy lens models. Those are currently expensive to obtain, both, in terms of comput
Externí odkaz:
http://arxiv.org/abs/2206.04696
Autor:
Savary, E., Rojas, K., Maus, M., Clément, B., Courbin, F., Gavazzi, R., Chan, J. H. H., Lemon, C., Vernardos, G., Cañameras, R., Schuldt, S., Suyu, S. H., Cuillandre, J. -C., Fabbro, S., Gwyn, S., Hudson, M. J., Kilbinger, M., Scott, D., Stone, C.
Publikováno v:
A&A 666, A1 (2022)
We present a search for galaxy-scale strong gravitational lenses in the initial 2 500 square degrees of the Canada-France Imaging Survey (CFIS). We designed a convolutional neural network (CNN) committee that we applied to a selection of 2 344 002 ex
Externí odkaz:
http://arxiv.org/abs/2110.11972
Autor:
Chan, J. H. H., Lemon, C., Courbin, F., Gavazzi, R., Clément, B., Millon, M., Paic, E., Rojas, K., Savary, E., Vernardos, G., Cuillandre, J. -C., Fabbro, S., Gwyn, S., Hudson, M. J., Kilbinger, M., McConnachie, A.
Publikováno v:
A&A 659, A140 (2022)
We report the discovery of five new doubly-imaged lensed quasars from the first 2500 square degrees of the ongoing Canada-France Imaging Survey (CFIS), which is a component of the Ultraviolet Near Infrared Optical Northern Survey (UNIONS), selected f
Externí odkaz:
http://arxiv.org/abs/2110.09535
Autor:
Akhazhanov, A., More, A., Amini, A., Hazlett, C., Treu, T., Birrer, S., Shajib, A., Schechter, P., Lemon, C., Nord, B., Aguena, M., Allam, S., Andrade-Oliveira, F., Annis, J., Brooks, D., Buckley-Geer, E., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Choi, A., Conselice, C., Costanzi, M., da Costa, L. N., Pereira, M. E. S., De Vicente, J., Desai, S., Dietrich, J. P., Doel, P., Everett, S., Ferrero, I., Finley, D. A., Flaugher, B., Frieman, J., García-Bellido, J., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., James, D. J., Kim, A. G., Kuehn, K., Kuropatkin, N., Lahav, O., Lima, M., Lin, H., Maia, M. A. G., March, M., Menanteau, F., Miquel, R., Morgan, R., Palmese, A., Paz-Chinchón, F., Pieres, A., Malagón, A. A. Plazas, Sanchez, E., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Smith, M., Soares-Santos, M., Suchyta, E., Swanson, M. E. C., Tarle, G., To, C., Varga, T. N., Weller, J.
Strongly lensed quadruply imaged quasars (quads) are extraordinary objects. They are very rare in the sky -- only a few tens are known to date -- and yet they provide unique information about a wide range of topics, including the expansion history an
Externí odkaz:
http://arxiv.org/abs/2109.09781