BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//LBNL Physics Division Research Progress Meetings - ECPv6.8.3//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:LBNL Physics Division Research Progress Meetings
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:UTC
BEGIN:STANDARD
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
TZNAME:UTC
DTSTART:20190101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=UTC:20191205T160000
DTEND;TZID=UTC:20191205T170000
DTSTAMP:20260417T022707
CREATED:20191022T015940Z
LAST-MODIFIED:20191119T165434Z
UID:1264-1575561600-1575565200@rpm.physics.lbl.gov
SUMMARY:Peter Timbie (UW-Madison) "21cm Intensity Mapping: A New Cosmological Tool?"
DESCRIPTION:ABSTRACT: \nThe 21 cm line from neutral hydrogen gas has many useful properties for mapping large volumes of the cosmos. These maps will give us a view of the Universe when the first luminous objects formed through gravity – the Cosmic Dawn and the Epoch of Reionization\, and later\, the post-Reionization Universe. They may even allow us to map the epoch before these luminous objects\, the cosmic dark ages. The large volumes of these maps promise dramatic improvements in estimation of cosmological parameters. Data is flowing now from a new generation of radio telescopes optimized for this task. Unfortunately\, the main challenge for all of them is that the astrophysical radio foregrounds are ~10\,000 times brighter than the expected hydrogen signal. In this talk I will focus on current and planned efforts to use the new technique of` ‘hydrogen intensity mapping’ to make tomographic maps of the post-Reionization universe. In particular\, I will describe the first measurements from an instrument in China\, called the Tianlai (‘Cosmic Sound’) Pathfinder.
URL:https://rpm.physics.lbl.gov/event/reserved-75/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
END:VCALENDAR