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astro-ph.CO2026
Gravitational lensing time delay beyond the Shapiro/geometry split
Luca Teodori, Kfir Blum, Zhaoyu Bai
Time delays are a key observable in strong gravitational lensing systems. Their theoretical expression is usually written as a sum of a geometrical delay and a Shapiro delay, with…
hep-ph2026
Influence of tides and self-gravity on Ultra-Light Dark Matter Bounds from Dwarf Galaxies
Andrea Caputo, Luca Teodori
Dwarf spheroidal galaxies provide some of the most sensitive astrophysical probes of ultra-light dark matter (ULDM), but the inferred constraints can be affected by two important s…
astro-ph.GA2026
The approximate gravitational lensing multiple plane mass sheet degeneracy
Luca Teodori
Strong gravitational lensing has to deal with many modeling degeneracies, the most notable being the Mass Sheet Degeneracy (MSD). We review the MSD when one needs to model more len…