TY - JOUR
T1 - The multiply imaged strongly lensed supernova refsdal
AU - Kelly, Patrick
N1 - Publisher Copyright:
© International Astronomical Union 2016.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2015
Y1 - 2015
N2 - In 1964, Sjur Refsdal first considered the possibility that the light from a background supernova could traverse multiple paths around a strong gravitational lens towards us. He showed that the arrival times of the supernova's light would depend on the cosmic expansion rate, as well as the distribution of matter in the lens. I discussed the discovery of the first such multiply imaged supernova, which exploded behind the MACS J1149.6+2223 galaxy cluster. We have obtained Hubble Space Telescope grism and ground-based spectra of the four images of the supernova, which form an Einstein Cross configuration around an elliptical cluster member. These spectra as well as rest-frame optical light curves have allowed us to learn about the properties of the peculiar core-collapse supernova explosion, which occurred 4.3 Gyr after the Bang Bang, and contain information about the lenses matter distribution as well as their stellar populations. A delayed image of the supernova is expected close to the galaxy cluster center as early as this Fall, and will serve as an unprecedented probe of the potential of a massive galaxy cluster.
AB - In 1964, Sjur Refsdal first considered the possibility that the light from a background supernova could traverse multiple paths around a strong gravitational lens towards us. He showed that the arrival times of the supernova's light would depend on the cosmic expansion rate, as well as the distribution of matter in the lens. I discussed the discovery of the first such multiply imaged supernova, which exploded behind the MACS J1149.6+2223 galaxy cluster. We have obtained Hubble Space Telescope grism and ground-based spectra of the four images of the supernova, which form an Einstein Cross configuration around an elliptical cluster member. These spectra as well as rest-frame optical light curves have allowed us to learn about the properties of the peculiar core-collapse supernova explosion, which occurred 4.3 Gyr after the Bang Bang, and contain information about the lenses matter distribution as well as their stellar populations. A delayed image of the supernova is expected close to the galaxy cluster center as early as this Fall, and will serve as an unprecedented probe of the potential of a massive galaxy cluster.
KW - (stars:) supernovae: individual (SN Refsdal)
KW - galaxies: clusters: individual (MACS J1149.6+2223)
KW - gravitational lensing
UR - http://www.scopus.com/inward/record.url?scp=84992597851&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84992597851&partnerID=8YFLogxK
U2 - 10.1017/S1743921316006955
DO - 10.1017/S1743921316006955
M3 - Article
AN - SCOPUS:84992597851
SN - 1743-9213
VL - 11
SP - 822
EP - 824
JO - Proceedings of the International Astronomical Union
JF - Proceedings of the International Astronomical Union
IS - A29B
ER -