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Uncovering a population of gravitational lens galaxies with magnified standard candle SN Zwicky
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- Goobar, Ariel, 1962- (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysikum
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- Pearson Johansson, Joel, 1984- (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Schulze, Steve, 1980- (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysikum
- show more...
- Dhawan, Suhail (author)
- Fremling, Christoffer (author)
- Yan, Lin (author)
- Perley, Daniel (author)
- Hinds, K-Ryan (author)
- Meynardie, William (author)
- Andreoni, Igor (author)
- Bellm, Eric (author)
- Bloom, Josh (author)
- Collett, Thomas E. (author)
- Drake, Andrew (author)
- Graham, Matthew (author)
- Kasliwal, Mansi (author)
- Kulkarni, Shri R. (author)
- Lemon, Cameron (author)
- Miller, Adam A. (author)
- Neill, James D. (author)
- Nordin, Jakob (author)
- Pierel, Justin (author)
- Richard, Johan (author)
- Riddle, Reed (author)
- Rigault, Mickael (author)
- Rusholme, Ben (author)
- Sharma, Yashvi (author)
- Stein, Robert (author)
- Stewart, Gabrielle (author)
- Townsend, Alice (author)
- Vinko, Jozsef (author)
- Wheeler, J. Craig (author)
- Wold, Avery (author)
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- (creator_code:org_t)
- 2023
- 2023
- English.
- In: Nature Astronomy. - 2397-3366. ; 7:9, s. 1098-1107
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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. Here we describe how high-cadence optical observations with the Zwicky Transient Facility, with its unparalleled large field of view, led to the detection of a multiply imaged type Ia supernova, SN Zwicky, also known as SN 2022qmx. Magnified nearly 25-fold, the system was found thanks to the standard candle nature of type Ia supernovae. 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 θE = 0.167″ and almost identical arrival times. The small θE and faintness of the lensing galaxy are very unusual, highlighting the importance of supernovae to fully characterize the properties of galaxy-scale gravitational lenses, including the impact of galaxy substructures.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- art (subject category)
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