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Follow-up of SN 2025wny IV: Photometric Time-delay Measurements of a Strongly Lensed Superluminous Supernova
Alice Townsend, Suhail Dhawan, Erin E. Hayes +34
We present photometric time-delay measurements of SN 2025wny, the first strongly lensed Type I superluminous supernova (SLSN-I), discovered at . Time-delay measurements…
Discovery of SN 2025wny: a Strongly Gravitationally Lensed Superluminous Supernova at z = 2.01
Joel Johansson, Daniel A. Perley, Ariel Goobar +31
We present the discovery of SN 2025wny (ZTF25abnjznp/GOTO25gtq) and spectroscopic classification of this event as the first gravitationally lensed Type I superluminous supernovae (…
ZTF SN Ia DR2: Peculiar velocities impact on the Hubble diagram
B. Carreres, D. Rosselli, J. E. Bautista +35
SNe Ia are used to determine the distance-redshift relation and build the Hubble diagram. Neglecting their host-galaxy peculiar velocities (PVs) may bias the measurement of cosmolo…
Growth-rate measurement with type-Ia supernovae using ZTF survey simulations
Bastien Carreres, Julian E. Bautista, Fabrice Feinstein +21
Measurements of the growth rate of structures at with peculiar velocity surveys have the potential of testing the validity of general relativity on cosmic scales. In this…