71 citations · 131 across the 3 of their papers we have counts for
11 papers
Snowmass Theory Frontier: Astrophysics and Cosmology
Daniel Green, Joshua T. Ruderman, Benjamin R. Safdi +84
We summarize progress made in theoretical astrophysics and cosmology over the past decade and areas of interest for the coming decade. This Report is prepared as the TF09 "Astrophy…
The search for low-mass axion dark matter with ABRACADABRA-10cm
Chiara P. Salemi, Joshua W. Foster, Jonathan L. Ouellet +10
Two of the most pressing questions in physics are the microscopic nature of the dark matter that comprises 84% of the mass in the universe and the absence of a neutron electric dip…
A deep search for decaying dark matter with XMM-Newton blank-sky observations
Joshua W. Foster, Marius Kongsore, Christopher Dessert +4
Sterile neutrinos with masses in the keV range are well-motivated extensions to the Standard Model that could explain the observed neutrino masses while also making up the dark mat…
X-ray Searches for Axions from Super Star Clusters
Christopher Dessert, Joshua W. Foster, Benjamin R. Safdi
Axions may be produced in abundance inside stellar cores and then convert into observable X-rays in the Galactic magnetic fields. We focus on the Quintuplet and Westerlund 1 super…
Systematics in the XENON1T data: the 15-keV anti-axion
Christopher Dessert, Joshua W. Foster, Yonatan Kahn +1
The XENON1T collaboration has found an excess of electron recoil events in their Science Run 1 data below ~7 keV with a spectral shape consistent with that expected from a solar-ax…
Green Bank and Effelsberg Radio Telescope Searches for Axion Dark Matter Conversion in Neutron Star Magnetospheres
Joshua W. Foster, Yonatan Kahn, Oscar Macias +6
Axion dark matter (DM) may convert to radio-frequency electromagnetic radiation in the strong magnetic fields around neutron stars. The radio signature of such a process would be a…