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BEGIN:VEVENT
SUMMARY:Maria Archidiacono
DTSTART:20200504T120000Z
DTEND:20200504T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CamCosmoLunc
 h/1/">The challenge of neutrino mass detection from cosmology</a>\nby Mari
 a Archidiacono as part of Cambridge cosmology lunch\n\n\nAbstract\nMassive
  neutrinos modify the expansion history of the Universe and the formation 
 of structures. Up-to-date cosmological data can provide very tight\, yet m
 odel dependent\, upper limits on the neutrino mass sum. In the next decade
  one of the goals of precision cosmology will be to pin down the absolute 
 neutrino mass. In this talk I will discuss the physical effects induced by
  massive neutrinos on cosmological observables\, reviewing current constra
 ints and elaborating on their interpretation. I will then focus on the the
 oretical challenges of the analysis of data from upcoming galaxy surveys\,
  showing how cosmology can detect a non-zero neutrino mass.\n\nIf you have
  a question about this talk\, please contact <a href="http://talks.cam.ac.
 uk/user/show/85636">David Stefanyszyn</a>.\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Austin Joyce (University of Amsterdam)
DTSTART:20200511T120000Z
DTEND:20200511T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/2
DESCRIPTION:by Austin Joyce (University of Amsterdam) as part of Cambridge
  cosmology lunch\n\nAbstract: TBA\n\nIf you have a question about this tal
 k\, please contact <a href="http://talks.cam.ac.uk/user/show/85636">David 
 Stefanyszyn</a>.\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jai-Chan Hwang (Kyungpook/DAMTP)
DTSTART:20200518T120000Z
DTEND:20200518T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/3
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CamCosmoLunc
 h/3/">Cosmological perturbation theory</a>\nby Jai-Chan Hwang (Kyungpook/D
 AMTP) as part of Cambridge cosmology lunch\n\n\nAbstract\nCosmological per
 turbation theory is an important theoretical pillar in the development and
  success of modern cosmology. Using the ADM (3+1) formulation of Einstein
 ’s gravity a perturbation analysis valid to fully nonlinear and exact or
 der is possible. Being fully nonlinear and exact it includes any order per
 turbation expansion as well as the post-Newtonian approximation. We will e
 xplain some consequences of this formulation in cosmology and astrophysics
 . A related work we have devoted during our stay in DAMTP will be explaine
 d as well.\n\nIf you have a question about this talk\, please contact <a h
 ref="http://talks.cam.ac.uk/user/show/85636">David Stefanyszyn</a>.\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mat Madhavacheril (Perimeter Institute)
DTSTART:20200601T120000Z
DTEND:20200601T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/5
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CamCosmoLunc
 h/5/">Cosmological applications of the kSZ effect</a>\nby Mat Madhavacheri
 l (Perimeter Institute) as part of Cambridge cosmology lunch\n\n\nAbstract
 \nPercent level measurements of the kSZ effect (due to bulk motion of free
  electrons) will be possible with upcoming CMB and galaxy surveys\, so it 
 is timely to ask what science can be extracted with such measurements. I w
 ill discuss how recasting kSZ tomography as a bispectrum measurement allow
 s for a unified framework under which the “galaxy optical depth degenera
 cy” problem becomes clear\; the cosmic velocity field and an astrophysic
 al power spectrum involving the electron density appear together. However\
 , these are degenerate only up to an overall amplitude. I discuss how scal
 e-dependent effects like those due to primordial non-Gaussianity or dark e
 nergy perturbations can be constrained with kSZ (with factors of >2x impro
 vement on fNL possible with future surveys). I will also discuss a way to 
 break the optical depth degeneracy using the dispersion measures of fast r
 adio bursts (FRBs) allowing for strong constraints on sigma8. Finally\, I 
 discuss calibration of baryonic feedback in weak lensing measurements usin
 g kSZ measurements of the electron density profile.\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marika Asgari (University of Edinburgh)
DTSTART:20200608T120000Z
DTEND:20200608T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/6
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CamCosmoLunc
 h/6/">Understanding the dark universe with observational cosmology</a>\nby
  Marika Asgari (University of Edinburgh) as part of Cambridge cosmology lu
 nch\n\n\nAbstract\nCosmology is a new and fast growing field\, owing this 
 growth to both new technology and statistical methods in imaging and data 
 processing. It is believed that we can explain the cosmology of the entire
  Universe using a handful of parameters through the standard cosmological 
 model. This model has been very successful in predicting the distribution 
 of galaxies and matter\, as well as very early measurements of cosmic micr
 owave background radiation. As the volume of data is growing we are starti
 ng to see cracks in this simple picture of the Universe\, through tensions
  between the results of different observational analyses.\n\nIn this talk 
 I will focus on the analysis of the data from the kilo degree survey (KiDS
 ). KiDS is a purpose-built gravitational lensing survey with high quality 
 images and a wide photometric coverage\, resulting in very high fidelity d
 ata. This dataset\, therefore\, provides an excellent playground where we 
 can test our methods in preparation for future weak lensing surveys. Alrea
 dy the first 450 degrees of the KiDS data shows a mild tension with CMB re
 sults from the Planck satellite\, which has sparked both skepticism and ex
 citement within the community. I will go through the systematics that can 
 affect the results and methods to mitigate them. I will also show results 
 from the combination of KiDS and the dark energy survey (DES). Combining p
 robes of cosmology can break degeneracies in the parameter space\, resulti
 ng in tighter constraints. I will finally show results for the combination
  of KiDS with spectroscopic galaxy surveys.\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cora Dvorkin (Harvard University)
DTSTART:20200615T120000Z
DTEND:20200615T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/7
DESCRIPTION:by Cora Dvorkin (Harvard University) as part of Cambridge cosm
 ology lunch\n\nLecture held in CMS \, Pav.B\, CTC Common Room (B1.19).\nAb
 stract: TBA\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dan Green (UCSD)
DTSTART:20200622T120000Z
DTEND:20200622T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/8
DESCRIPTION:by Dan Green (UCSD) as part of Cambridge cosmology lunch\n\nLe
 cture held in CMS \, Pav.B\, CTC Common Room (B1.19).\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Matias Zaldarriaga
DTSTART:20200629T120000Z
DTEND:20200629T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/9
DESCRIPTION:by Matias Zaldarriaga as part of Cambridge cosmology lunch\n\n
 Lecture held in CMS \, Pav.B\, CTC Common Room (B1.19).\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eva Silverstein (Stanford)
DTSTART:20200706T120000Z
DTEND:20200706T130000Z
DTSTAMP:20260422T212728Z
UID:CamCosmoLunch/10
DESCRIPTION:by Eva Silverstein (Stanford) as part of Cambridge cosmology l
 unch\n\nLecture held in CMS \, Pav.B\, CTC Common Room (B1.19).\nAbstract:
  TBA\n
LOCATION:https://researchseminars.org/talk/CamCosmoLunch/10/
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