Slides of 5 lectures at XV Brazilian School on Cosmology and ...
Slides of 5 lectures at XV Brazilian School on Cosmology and ...
Slides of 5 lectures at XV Brazilian School on Cosmology and ...
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Type Ia supernova system<str<strong>on</strong>g>at</str<strong>on</strong>g>ics?SneIa are st<strong>and</strong>ardizable c<strong>and</strong>les <strong>on</strong>ly; two popularmethods SALT/SALT–II, <strong>and</strong> MLCS2k2 yield differentresults when comparing cosmological resultsDegeneracy between intrinsic colour vari<str<strong>on</strong>g>at</str<strong>on</strong>g>i<strong>on</strong>s <strong>and</strong>reddening by dustHubble bubble is seen if R V= 3.1 (Milky way value); notif R V= 1.7 (<str<strong>on</strong>g>of</str<strong>on</strong>g>ten includes d<str<strong>on</strong>g>at</str<strong>on</strong>g>a 0.015 < ∼ z < ∼ z c<strong>on</strong>v ≃ 0.022)Study independent <str<strong>on</strong>g>of</str<strong>on</strong>g> SneIa in 15 nearby galaxies givesR V= 2.77 ± 0.41 (Finkelman et al 2010, 2011)We find “Hubble bubble” independently <str<strong>on</strong>g>of</str<strong>on</strong>g> SneIaN.B. SneIa are st<strong>and</strong>ardized by minimizing H 0residualsin CMB frame. Uni<strong>on</strong>, C<strong>on</strong>stituti<strong>on</strong> compil<str<strong>on</strong>g>at</str<strong>on</strong>g>i<strong>on</strong>s c<strong>on</strong>tainmany SneIa in range 0.015 < ∼ z < ∼ 0.022 where CMBboost compens<str<strong>on</strong>g>at</str<strong>on</strong>g>es partly.15th <str<strong>on</strong>g>Brazilian</str<strong>on</strong>g> <str<strong>on</strong>g>School</str<strong>on</strong>g> <strong>on</strong> <strong>Cosmology</strong> <strong>and</strong> Gravit<str<strong>on</strong>g>at</str<strong>on</strong>g>i<strong>on</strong>, August 2012 – p.138/143
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