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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20111201T000000
DTEND;TZID=Atlantic/Canary:20111201T010000
UID:iactalks-319
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/319
CREATED:2011-12-01T00:00:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Can Voids and Superclusters trace Dark Energy?
DESCRIPTION:Can Voids and Superclusters trace Dark Energy?\nDr. Carlos Hern
 andez-Monteagudo\n\nI revisit the claim of Dark Energy detection after sta
 cking CMB data on the angular position of voids and superclusters in Sloan
  Data. I examine the theoretically expected amplitude for the ISW-induced 
 signal and explore its scale dependence. I next confront these predictions
  with results obtained from real WMAP data, and evaluate the degree of agr
 eement and the possible presence of contaminants. In a more general contex
 t, I address the possibility of unveiling the signature of Dark Energy on 
 the CMB by looking at isolated regions on the sky hosting high-threshold p
 rojected under/over-densities: this constitutes a novel approach since it 
 is less sensitive to large angle systematics commonly present in large sca
 le structure surveys.
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