273 citations · 2k across the 28 of their papers we have counts for
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Hard X-ray Excess from the Magnificent Seven Neutron Stars
Christopher Dessert, Joshua W. Foster, Benjamin R. Safdi
We report significant hard X-ray excesses in the energy range 2-8 keV for two nearby isolated neutron stars RX J1856.6-3754 and RX J0420.0-5022. These neutron stars have previously…
Early-Universe Simulations of the Cosmological Axion
Malte Buschmann, Joshua W. Foster, Benjamin R. Safdi
Ultracompact dark matter (DM) minihalos at masses at and below arise in axion DM models where the Peccei-Quinn (PQ) symmetry is broken after inflation. The min…
Design and Implementation of the ABRACADABRA-10 cm Axion Dark Matter Search
Jonathan L. Ouellet, Chiara P. Salemi, Joshua W. Foster +12
The past few years have seen a renewed interest in the search for light particle dark matter. ABRACADABRA is a new experimental program to search for axion dark matter over a broad…