The magnificent five images of Supernova Refsdal: time delay and magnification measurements
In late 2014, four images of supernova (SN) “Refsdal,” the first known example of a strongly lensed SN with multiple resolved images, were detected in the MACS J1149 galaxy-cluster field. Following the images’ discovery, the SN was predicted to reappear within hundreds of days at a new position ∼8″...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2023 May 11
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| In: |
The astrophysical journal
Year: 2023, Volume: 948, Issue: 2, Pages: 1-33 |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/ac4ccb |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.3847/1538-4357/ac4ccb Verlag, kostenfrei, Volltext: https://dx.doi.org/10.3847/1538-4357/ac4ccb 
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| Author Notes: | Patrick L. Kelly, Steven Rodney, Tommaso Treu, Simon Birrer, Vivien Bonvin, Luc Dessart, Ryan J. Foley, Alexei V. Filippenko, Daniel Gilman, Saurabh Jha, Jens Hjorth, Kaisey Mandel, Martin Millon, Justin Pierel, Stephen Thorp, Adi Zitrin, Tom Broadhurst, Wenlei Chen, Jose M. Diego, Alan Dressler, Or Graur, Mathilde Jauzac, Matthew A. Malkan, Curtis McCully, Masamune Oguri, Marc Postman, Kasper Borello Schmidt, Keren Sharon, Brad E. Tucker, Anja von der Linden, and Joachim Wambsganss |
MARC
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| 245 | 1 | 4 | |a The magnificent five images of Supernova Refsdal |b time delay and magnification measurements |c Patrick L. Kelly, Steven Rodney, Tommaso Treu, Simon Birrer, Vivien Bonvin, Luc Dessart, Ryan J. Foley, Alexei V. Filippenko, Daniel Gilman, Saurabh Jha, Jens Hjorth, Kaisey Mandel, Martin Millon, Justin Pierel, Stephen Thorp, Adi Zitrin, Tom Broadhurst, Wenlei Chen, Jose M. Diego, Alan Dressler, Or Graur, Mathilde Jauzac, Matthew A. Malkan, Curtis McCully, Masamune Oguri, Marc Postman, Kasper Borello Schmidt, Keren Sharon, Brad E. Tucker, Anja von der Linden, and Joachim Wambsganss |
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| 520 | |a In late 2014, four images of supernova (SN) “Refsdal,” the first known example of a strongly lensed SN with multiple resolved images, were detected in the MACS J1149 galaxy-cluster field. Following the images’ discovery, the SN was predicted to reappear within hundreds of days at a new position ∼8″ away in the field. The observed reappearance in late 2015 makes it possible to carry out Refsdal’s original proposal to use a multiply imaged SN to measure the Hubble constant H 0, since the time delay between appearances should vary inversely with H 0. Moreover, the position, brightness, and timing of the reappearance enable a novel test of the blind predictions of galaxy-cluster models, which are typically constrained only by the positions of multiply imaged galaxies. We have developed a new photometry pipeline that uses DOLPHOT to measure the fluxes of the five images of SN Refsdal from difference images. We apply four separate techniques to perform a blind measurement of the relative time delays and magnification ratios between the last image SX and the earlier images S1-S4. We measure the relative time delay of SX-S1 to be days and the relative magnification to be . This corresponds to a 1.5% precision on the time delay and 17% precision for the magnification ratios and includes uncertainties due to millilensing and microlensing. In an accompanying paper, we place initial and blind constraints on the value of the Hubble constant. | ||
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| 700 | 1 | |a Treu, Tommaso |e VerfasserIn |4 aut | |
| 700 | 1 | |a Birrer, Simon |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bonvin, Vivien |e VerfasserIn |4 aut | |
| 700 | 1 | |a Dessart, Luc |e VerfasserIn |4 aut | |
| 700 | 1 | |a Foley, Ryan J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Filippenko, Alexei V. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Gilman, Daniel |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Hjorth, Jens |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Millon, Martin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pierel, Justin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Thorp, Stephen |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zitrin, Adi |e VerfasserIn |4 aut | |
| 700 | 1 | |a Broadhurst, Tom |e VerfasserIn |4 aut | |
| 700 | 1 | |a Chen, Wenlei |e VerfasserIn |4 aut | |
| 700 | 1 | |a Diego, Jose M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Dressler, Alan |e VerfasserIn |4 aut | |
| 700 | 1 | |a Graur, Or |e VerfasserIn |4 aut | |
| 700 | 1 | |a Jauzac, Mathilde |e VerfasserIn |4 aut | |
| 700 | 1 | |a Malkan, Matthew A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a McCully, Curtis |e VerfasserIn |4 aut | |
| 700 | 1 | |a Oguri, Masamune |e VerfasserIn |4 aut | |
| 700 | 1 | |a Postman, Marc |e VerfasserIn |4 aut | |
| 700 | 1 | |a Schmidt, Kasper Borello |e VerfasserIn |4 aut | |
| 700 | 1 | |a Sharon, Keren |e VerfasserIn |4 aut | |
| 700 | 1 | |a Tucker, Brad E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Linden, Anja von der |e VerfasserIn |4 aut | |
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