Uncovering a population of gravitational lens galaxies with magnified standard candle SN Zwicky
| Autor: | Goobar, Ariel, Johansson, Joel, Schulze, Steve, Arendse, Nikki, Carracedo, Ana Sagués, Dhawan, Suhail, Mörtsell, Edvard, Fremling, Christoffer, Yan, Lin, Perley, Daniel, Sollerman, Jesper, Joseph, Rémy, Hinds, K-Ryan, Meynardie, William, Andreoni, Igor, Bellm, Eric, Bloom, Josh, Collett, Thomas E., Drake, Andrew, Graham, Matthew, Kasliwal, Mansi, Kulkarni, Shri, Lemon, Cameron, Miller, Adam A., Neill, James D., Nordin, Jakob, Pierel, Justin, Richard, Johan, Riddle, Reed, Rigault, Mickael, Rusholme, Ben, Sharma, Yashvi, Stein, Robert, Stewart, Gabrielle, Townsend, Alice, Vinko, Jozsef, Wheeler, J. Craig, Wold, Avery |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41550-023-01981-3 |
| Popis: | Detecting gravitationally lensed supernovae is among the biggest challenges in astronomy. It involves a combination of two very rare phenomena: catching the transient signal of a stellar explosion in a distant galaxy and observing it through a nearly perfectly aligned foreground galaxy that deflects light towards the observer. High-cadence optical observations with the Zwicky Transient Facility, with an unparalleled large field of view, led to the detection of a multiply-imaged Type Ia supernova (SN Ia), ``SN Zwicky", a.k.a. SN 2022qmx. Magnified nearly twenty-five times, the system was found thanks to the ``standard candle" nature of SNe Ia. High-spatial resolution imaging with the Keck telescope resolved four images of the supernova with very small angular separation, corresponding to an Einstein radius of only $\theta_E =0.167"$ and almost identical arrival times. The small $\theta_E$ and faintness of the lensing galaxy is very unusual, highlighting the importance of supernovae to fully characterise the properties of galaxy-scale gravitational lenses, including the impact of galaxy substructures. Comment: Matches published version in Nature Astronomy |
| Databáze: | arXiv |
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