 SN Refsdal (inset picture) and galaxy cluster MACS J1149.6+2223 | |
| Event type | Supernova |
|---|---|
| Date | c. 9.34 billion years ago (discovered 11 November 2014 by the Hubble Space Telescope) |
| Constellation | Leo |
| Right ascension | 11h 49m 35.45s[1] |
| Declination | 22° 23′ 44.84″[1] |
| Epoch | J2000 |
| Distance | c. 14.4 billion ly |
| Redshift | z=1.49[1] |
| Host | SP 1149 |
| Notable features | First multiply-lensed supernova |
 Related media on Commons | |
SN Refsdal is the first detected multiply-lensed supernova, visible within the field of the galaxy cluster MACS J1149+2223. It was named after Norwegian astrophysicist Sjur Refsdal, who, in 1964, first proposed using time-delayed images from a lensed supernova to study the expansion of the universe.[1][2][3] The observations were made using the Hubble Space Telescope.[4]
- ^ a b c d Kelly, P. L.; Rodney, S. A.; Treu, T.; Foley, R. J.; Brammer, G.; Schmidt, K. B.; Zitrin, A.; Sonnenfeld, A.; Strolger, L. -G.; Graur, O.; Filippenko, A. V.; Jha, S. W.; Riess, A. G.; Bradac, M.; Weiner, B. J.; Scolnic, D.; Malkan, M. A.; von Der Linden, A.; Trenti, M.; Hjorth, J.; Gavazzi, R.; Fontana, A.; Merten, J. C.; McCully, C.; Jones, T.; Postman, M.; Dressler, A.; Patel, B.; Cenko, S. B.; et al. (2015). "Multiple images of a highly magnified supernova formed by an early-type cluster galaxy lens". Science. 347 (6226): 1123–1126. arXiv:1411.6009. Bibcode:2015Sci...347.1123K. doi:10.1126/science.aaa3350. PMID 25745167. S2CID 206633888.
- ^ Overbye, Dennis (March 5, 2015). "Astronomers Observe Supernova and Find They're Watching Reruns". New York Times. Retrieved March 5, 2015.
- ^ Amina Khan (5 March 2015). "Don't believe the light: Supernova in 'Einstein Cross' is a cosmic trick". Los Angeles Times.
- ^ Sharon, K.; Johnson, T. L. (2015). "Revised Lens Model for the Multiply Imaged Lensed Supernova, "Sn Refsdal" in Macs J1149+2223". The Astrophysical Journal. 800 (2): L26. arXiv:1411.6933. Bibcode:2015ApJ...800L..26S. doi:10.1088/2041-8205/800/2/L26. S2CID 118735742.