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SUMMARY:Weak lensing signals induced from second-order vector perturbation
DTSTART;VALUE=DATE-TIME:20150909T093000Z
DTEND;VALUE=DATE-TIME:20150909T095000Z
DTSTAMP;VALUE=DATE-TIME:20200709T054829Z
UID:indico-contribution-1090991@indico.cern.ch
DESCRIPTION:Speakers: Shohei Saga (Nagoya University\, Japan)\nThe standar
d cosmological perturbation theory is well established by by a number of o
bservations such as the CMB anisotropy or the Large scales structure.\nThe
standard cosmological perturbation theory includes three independent mode
s\, i.e.\, scalar\, vector\, and tensor modes.\nThe scalar mode is the do
minant component in our Universe and has been well determined by cosmologi
cal observations.\nConversely\, the vector mode is neglected in the standa
rd first-order cosmological perturbation theory since it only has a decayi
ng mode.\nThis situation changes if the cosmological perturbation theory i
s expanded up to second order.\nThe second-order vector and tensor modes a
re inevitably induced by the product of the first-order scalar modes.\nWe
study the effect of the second-order vector mode on the weak lensing curl-
and B-modes.\n\nhttps://indico.cern.ch/event/438475/contributions/1090991
/
LOCATION: Rm 207
URL:https://indico.cern.ch/event/438475/contributions/1090991/
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