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Department of Physics presents a Physics Colloquium

Colloquium:

Scanning teh Sky for Sterile Neutrino Dark Matter

 

Prof. Kerstin Perez 

MIT

 

The particle nature of dark matter is a driving question of contemporary physics, with astrophysical experiments leading the search for dark matter annihilation or decay signatures.  In an era of ever-tightening constraints on Weakly-interacting massive particles (WIMPs), there is increasing interest in light (<1 GeV) dark matter candidates. Sterile neutrinos, which could provide an elegant solution to the puzzle of the observed active neutrino masses and mixing, are among the most well-motivated light dark matter candidates, with astrophysical X-ray observations offering the best opportunity for discovery.  In this talk, I will  review the status of X-ray searches for sterile neutrinos, including the candidate sterile neutrino signal at ~3.5 keV.  In particular, I will describe the novel use of the NuSTAR X-ray satellite observatory to provide the leading constraints in much of the mass range ~10-50 keV, improving upon previous limits at some masses by over an order of magnitude and reducing the available parameter space for sterile neutrinos in the simplest models by almost two-thirds. 

 

Thursday, January 17 at 4:00pm to 5:00pm

Dana Research Center, 114 Dana Research Center

Event Type

Seminar

Departments

COS, Physics

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