BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//LBNL Physics Division Research Progress Meetings - ECPv6.8.3//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://rpm.physics.lbl.gov
X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20180311T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20181104T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181101T160000
DTEND;TZID=America/Los_Angeles:20181101T170000
DTSTAMP:20260413T124742
CREATED:20181016T133016Z
LAST-MODIFIED:20181016T133016Z
UID:921-1541088000-1541091600@rpm.physics.lbl.gov
SUMMARY:Vivian Poulin (JHU) "Shedding Light on Dark Matter with the CMB: Implications for EDGES 21cm Signal"
DESCRIPTION:ABSTRACT: \nIn this talk\, I would like to review how the Cosmic Microwave Background (in particular its temperature and polarization anisotropies) can be used to perform both direct and indirect detection of Dark Matter.  In a first part\, I will show how the CMB can be used to put stringent constraints on DM models leading to energy injection\, such as DM annihilations and decay or Primordial Black Holes matter accretion. I will compare CMB bounds to those coming from galactic cosmic and gamma ray searches and illustrate how the 21cm signal\, a major target of next generation surveys\, can be used to significantly improve over current limits. In a second part\, I will discuss a recent puzzling absorption feature in the global 21cm signal observed by the EDGES experiment. Such feature could be explained by efficient scattering between DM and baryons in the late universe. I will show how the CMB strongly challenges such explanation of that signal.
URL:https://rpm.physics.lbl.gov/event/vivian-poulin-jhu-shedding-light-on-dark-matter-with-the-cmb-implications-for-edges-21cm-signal/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
END:VCALENDAR