517 citations · 6k across the 141 of their papers we have counts for
7 papers · 1 filter
Dark Matter Scattering Constraints from Observations of Stars Surrounding Sgr A*
Isabelle John, Rebecca K. Leane, Tim Linden
High resolution infrared data has revealed several young stars in close proximity to Sgr A*. These stars may encounter extremely high dark matter densities. We examine scenarios wh…
Strong Constraints on Dark Matter Annihilation in Ursa Major III/UNIONS 1
Milena Crnogorčević, Tim Linden
Very recent work has identified a new satellite galaxy, Ursa Major III/UNIONS I, which is the faintest such system ever observed. Dynamical considerations indicate that if the syst…
Gamma-Ray Lines in 15 Years of Fermi-LAT Data: New Constraints on Higgs Portal Dark Matter
Pedro De La Torre Luque, Juri Smirnov, Tim Linden
Monoenergetic -ray spectral lines are among the cleanest signatures of dark matter annihilation. We analyze 15 years of Fermi-LAT data, find no spectral lines, and place strong…
On the Neutrino and Gamma-Ray Emission from NGC 1068
Carlos Blanco, Dan Hooper, Tim Linden +1
IceCube has recently reported the detection of neutrinos from the nearby active galaxy, NGC 1068. The lack of TeV-scale emission from this source suggests t…
Limits on dark matter annihilation in prompt cusps from the isotropic gamma-ray background
M. Sten Delos, Michael Korsmeier, Axel Widmark +3
Recent studies indicate that thermally produced dark matter will form highly concentrated, low-mass cusps in the early universe that often survive until the present. While these cu…
Accurate Inverse-Compton Models Strongly Enhance Leptophilic Dark Matter Signals
Isabelle John, Tim Linden
The annihilation of TeV-scale leptophilic dark matter into electron-positron pairs (hereafter ) will produce a sharp cutoff in the local cosmic-ray spectrum at an…
Where are the Cascades from Blazar Jets? An Emerging Tension in the -ray sky
Carlos Blanco, Oindrila Ghosh, Sunniva Jacobsen +1
Blazars are among the most powerful accelerators and are expected to produce a bright TeV -ray flux. However, TeV -rays are attenuated by interactions with intergalactic radi…