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BEGIN:VEVENT
DTSTAMP:20260919T170743Z
LAST-MODIFIED:20190325T144424Z
DTSTART:20190327T153000Z
DTEND:20190327T163000Z
UID:event2100@bu.edu
URL:http://physics.bu.edu/internal/events/show/2100
SUMMARY:Neutrino and dark sector physics from CMB lensing
DESCRIPTION:Featuring Mathew Madhavacheril\, Princeton University\n\nPart o
	f the HET Seminar Series.\n\nThe cosmic microwave background (CMB) provides
	 a snapshot of the universe at a redshift of around 1100. At the same time\
	, it acts as a backlight that is gravitationally lensed by structure that f
	ormed at low redshifts. CMB fluctuations are therefore especially sensitive
	 to physics that becomes influential at late-times such as dark energy and 
	massive neutrinos. Recent measurements from the Planck satellite indicate a
	 tension between the amplitude of structure measured at low redshifts and t
	hat expected from the primary CMB alone. Ongoing high-resolution CMB experi
	ments like the Atacama Cosmology Telescope (ACT) and planned experiments in
	cluding the Simons Observatory and CMB Stage IV will significantly improve 
	the precision on cosmological parameters and clarify these tensions. I will
	 survey the status and prospects of using CMB lensing in conjunction with l
	ow-redshift optical and spectroscopic probes to constrain the properties of
	 neutrinos and dark matter\, focusing on recent results from the ACTPol exp
	eriment.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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