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SUMMARY:Cosmology with millimeter-wavelength intensity mapping: forecast a
 nd modelling - Azadeh Moradinezhad (University of Geneva)
DTSTART:20210517T120000Z
DTEND:20210517T130000Z
UID:TALK159943@talks.cam.ac.uk
CONTACT:James Bonifacio
DESCRIPTION:Line intensity mapping (LIM) is emerging as a powerful techniq
 ue to map the cosmic large-scale structure. Measurement of spatial fluctua
 tions in the intensity of spectral lines together with their observed freq
 uency provide a low-resolution\, 3-dimensional map of the structure over a
  wide range of scales and redshifts. Among various line candidate\, rotati
 onal lines of carbon monoxide\, CO(J->J-1)\, and the fine structure line o
 f ionized carbon\, [CII]\, are two of the most studied ones. In the first 
 part of the talk\, I will discuss the prospects of future ground-based mm-
 wavelength LIM surveys\, capable of measuring power spectrum of CO and [CI
 I] lines\, in constraining properties of neutrinos and light relics. I wil
 l then describe the optimal instrument design and survey strategy to reach
  the required sensitivity. In the second part of the talk\, after discussi
 ng some of the shortcomings of the existing models of line intensity power
  spectrum\, I will present an extended halo model\, which accounts for non
 lineaities of dark matter and biasing relation\, as well as the shot-noise
  contributions beyond Possion approximation. I will then show the comparis
 on of the model predictions against simulated intensity maps.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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