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SUMMARY:PAU Consolider: A new observational approach to measure dark energ
 y with baryon acoustic oscillations
DTSTART;VALUE=DATE-TIME:20070615T090000Z
DTEND;VALUE=DATE-TIME:20070615T100000Z
DTSTAMP;VALUE=DATE-TIME:20261112T090845Z
UID:indico-event-1577@indico.ific.uv.es
DESCRIPTION:The origin of the so-called ``dark energy" is often considered
  the most important scientific problem of our time\, and it presents a fun
 damental challenge for particle physics\, astrophysics and cosmology. I br
 iefly review and describe the most promising observational approaches whic
 h are being currently developed to tackle this problem. In particular\, ba
 ryon acoustic oscillations (BAO) have recently emerged as one of the most 
 powerful techniques to characterize the equation of state of dark energy a
 nd its possible evolution. In the next years\, several large scale project
 s will attempt to use BAO to characterize dark energy by measuring redshif
 ts for hundreds of thousands of galaxies. We present a new approach to ext
 ract information on dark energy from BAO\, based on the comparison of the 
 observed colors of galaxies finely sampled at many wavelenghts\, with thos
 e of a redshifted spectral template("photometric" redshifts) . This method
  turns out to be much more efficient than conventional spectroscopic obser
 vations\, and it also provides extremely useful data for other astrophysic
 al applications. I describe the main characteristics of a survey based on 
 this approach and proposed by the PAU collaboration.\n\nhttps://indico.ifi
 c.uv.es/event/1577/
LOCATION:Edf. Institutos de Investigación Sala Reuniones Sotano
URL:https://indico.ific.uv.es/event/1577/
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