I will discuss the three following papers:
Was There a 3.5 keV Line? (https://arxiv.org/abs/2309.03254)
Gamma-Ray Lines in 15 Years of Fermi-LAT Data: New Constraints
on Higgs Portal Dark Matter (https://arxiv.org/abs/2309.03281)
A Search for Dark Matter Lines at the Galactic Center with 14 Years
of Fermi Data (https://arxiv.org/abs/2212.07435)