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Colloquium: What’s the Matter with the Universe?

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Enectali Figueroa-Feliciano, Massachusetts Institute of Technology
12 February 2015 from 4:00 PM to 5:00 PM
117 Osmond Laboratory
Contact Name
Doug Cowen
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Dark matter makes up 85% of the mass of the Universe, yet we know very

little about what it is. We hunt for dark matter in an old iron mine

half a mile underground using detectors operating only thousands of a

degree above absolute zero. I will present results from the Cryogenic

Dark Matter Search (CDMS) collaboration where we focus on directly

detecting dark matter particles with masses between 1 to 10 GeV. Some

theoretical models propose much lighter dark matter, in the range of 1

to 100 keV, which might be detected indirectly through their decay or

interactions in the X-ray band. I will introduce the Micro-X sounding

rocket payload, a high-spectral resolution X-ray microcalorimeter which

could make the most sensitive search for these keV-mass dark matter

particles in the near future.