SN Requiem
also AT 2016jka
- Type
- Supernova, Ia (likely)
- Status
- Confirmed
- Lensing
- Multiply imaged
- Lensing cluster
- MACS J0138.0-2155 (z = 0.338)
- Redshift
- 1.95
- Position
- 01:38:03.63 -21:55:50.4
Supernova in the lensed quiescent galaxy MRG-M0138, found in 2016 HST images (Rodney et al. 2021). Three images were seen; a fourth is predicted to arrive in the 2030s. The same galaxy later hosted SN Encore, and the "Cosmology with supernova Encore" papers model both. Forecasts of the reappearance: Suyu et al. (2026).
Papers
- Rodney et al. (2021)
A gravitationally lensed supernova with an observable two-decade time delay - Pierel et al. (2024b)
Lensed Type Ia Supernova "Encore" at z = 2: The First Instance of Two Multiply Imaged Supernovae in the Same Host Galaxy - Granata et al. (2025)
Cosmology with supernova Encore in the strong lensing cluster MACS J0138-2155 Spectroscopy with MUSE - Acebron et al. (2025)
Enhanced strong-lensing model of MACS J0138.0-2155 based on new JWST and VLT/MUSE observations - Ertl et al. (2025)
Cosmology with supernova Encore in the strong lensing cluster MACS J0138-2155: Photometry, cluster members, and lens mass model - Pierel et al. (2026)
Cosmology with Supernova Encore in the Strong Lensing Cluster MACS J0138-2155: Time Delays and Hubble Constant Measurement - Suyu et al. (2026)
Cosmology with supernova Encore in the strong lensing cluster MACS J0138-2155: Lens model comparison and H0 measurement - Bazzanini et al. (2026)
A new H0 measurement with SNe Requiem and Encore using Gravity.jl