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Title: | Multiple images of a highly magnified supernova formed by an early-type cluster galaxy lens | Authors: | Kelly, Patrick L. Rodney, Steven A. Treu, Tommaso Foley, Ryan J. Brammer, Gabriel Schmidt, Kasper B. Zitrin, Adi Sonnenfeld, Alessandro Strolger, Louis-Gregory Graur, Or Filippenko, Alexei V. Jha, Saurabh W. Riess, Adam G. Bradac, Marusa Weiner, Benjamin J. Scolnic, Daniel Malkan, Matthew A. von der Linden, Anja Trenti, Michele Hjorth, Jens Gavazzi, Raphael FONTANA, Adriano Merten, Julian C. McCully, Curtis Jones, Tucker Postman, Marc Dressler, Alan Patel, Brandon Cenko, S. Bradley Graham, Melissa L. Tucker, Bradley E. |
Issue Date: | 2015 | Journal: | SCIENCE | Number: | 347 | Issue: | 6226 | First Page: | 1123 | Abstract: | In 1964, Refsdal hypothesized that a supernova whose light traversed multiple paths around a strong gravitational lens could be used to measure the rate of cosmic expansion. We report the discovery of such a system. In Hubble Space Telescope imaging, we have found four images of a single supernova forming an Einstein cross configuration around a redshift z = 0.54 elliptical galaxy in the MACS J1149.6+2223 cluster. The cluster’s gravitational potential also creates multiple images of the z = 1.49 spiral supernova host galaxy, and a future appearance of the supernova elsewhere in the cluster field is expected. The magnifications and staggered arrivals of the supernova images probe the cosmic expansion rate, as well as the distribution of matter in the galaxy and cluster lenses. | URI: | http://hdl.handle.net/20.500.12386/29660 | URL: | https://science.sciencemag.org/content/347/6226/1123 | ISSN: | 0036-8075 | DOI: | 10.1126/science.aaa3350 | Bibcode ADS: | 2015Sci...347.1123K | Fulltext: | reserved |
Appears in Collections: | 1.01 Articoli in rivista |
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