Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 800, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/800/2/L26
Keywords
galaxies: clusters: general; galaxies: clusters: individual (MACS J1149+2223); gravitational lensing: strong; supernovae: individual (SN Refsdal)
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We present a revised lens model of MACS J1149+2223, in which the first resolved multiply imaged lensed supernova (SN) was discovered. The lens model is based on the model of Johnson et al. with some modifications. We include more lensing constraints from the host galaxy of the newly discovered SN, and increase the flexibility of the model in order to better reproduce the lensing signal in the vicinity of this galaxy. The revised model accurately reconstructs the positions of the lensed SN, provides magnifications, and predicts the time delay between the instances of the SN. Finally, we reconstruct the source image of the host galaxy, and position the SN on one of its spiral arms. Products of this lens model are available to the community through MAST.
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