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SUMMARY:Joint Colloquium OAUV/SOM: Much Ado About Nothing: the Cosmic Mean
 ing Of Voids
DTSTART;VALUE=DATE-TIME:20131127T110000Z
DTEND;VALUE=DATE-TIME:20131127T120000Z
DTSTAMP;VALUE=DATE-TIME:20261023T131823Z
UID:indico-event-2035@indico.ific.uv.es
DESCRIPTION:\n    Underdense regions in the universe contain a wealth of c
 osmological information. They emerge and evolve in a hierarchical fashion\
 , and as mature voids form a dominant component of the large scale Cosmic 
 Web. This talk will review our work on a rang of aspects of cosmic voids.\
 n\n    First\, we will discuss the hierarchical evolution of voids\, discu
 ssing how they build up the void population via the processes of merging a
 nd collapse. Extending on the analytical framework\, we subsequently discu
 ss how the Multiscale Watershed Void Finder is used to construct void merg
 ing trees in cosmological computer simulations. A second aspect concerns t
 he cosmological information contained in voids. The evolving shapes of voi
 ds form a sensitive probe of dark energy\, and the seminar will explore th
 e practical exploitation of this idea. Subsequently\, the infrastructure o
 f voids is investigated. The ongoing multi wavelength study of void galaxi
 es in the Void Galaxy Survey will be presented. Void galaxies are unique p
 robes of galaxy evolution\, hardly affected by disturbing interaction with
  neighbors they are often small blue galaxies with a high rate of star for
 mation.\n\n    In addition to a discussion of some VGS results\, we use th
 e high-resolution LCDM simulation CosmoGrid to explore how dark matter hal
 o systems similar in mass\, size and environment to VGS31 came to be\n\nht
 tps://indico.ific.uv.es/event/2035/
LOCATION:IFIC Seminar Room 1.1.1
URL:https://indico.ific.uv.es/event/2035/
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