BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Gamma-ray attenuation from extragalactic background light in the F
 ermi and CTA era
DTSTART;VALUE=DATE-TIME:20220915T124500Z
DTEND;VALUE=DATE-TIME:20220915T134500Z
DTSTAMP;VALUE=DATE-TIME:20260606T223904Z
UID:indico-contribution-78@indico.ift.uam-csic.es
DESCRIPTION:Speakers: Alberto Saldana-Lopez (University of Geneva)\nThe di
 ffuse extragalactic background light (EBL) is formed by ultraviolet (UV)\,
  optical\, and infrared (IR) photons mainly produced by star formation pro
 cesses over the history of the Universe and contains essential information
  about galaxy evolution and cosmology. The EBL also attenuates gamma-ray f
 luxes that travel cosmological distances through pair-production interacti
 ons\, leaving a signature in the gamma-ray spectra of extragalactic source
 s. In this talk\, we present a new determination of the evolving EBL spect
 ral energy distribution using a novel approach purely based on galaxy data
  aiming to reduce current uncertainties on the higher redshifts and IR int
 ensities. Our results are based in one of the most comprehensive and deepe
 st multi-wavelength galaxy datasets ever obtained\, which allow us to deri
 ve the overall EBL evolution up to z~6 and its uncertainties. We will also
  discuss the gamma-ray optical depths that are obtained from our EBL appro
 ximation\, and how we can measure galaxy evolution and other cosmological 
 properties such as the cosmic star-formation rate and the expansion rate o
 f the Universe using gamma-ray observations of blazars.\n\nhttps://indico.
 ift.uam-csic.es/event/11/contributions/78/
LOCATION:IFT\, Sala Roja (red room)
URL:https://indico.ift.uam-csic.es/event/11/contributions/78/
END:VEVENT
END:VCALENDAR