Sunghye Baek (Pisa)

Identifying AGN-powered Lyman Alpha Emitters
When Dec 10, 2012 from 11:00 AM to 12:00 PM
  • Special Seminar
Where SH, Seminar room
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The most natural explanation for the large Lya luminosities is associated with star forming activities. Short-lived, massive stars produce large amount of UV photons and H-atoms recombine on a short time scale in the dense interstellar medium emitting Lya photons. Interestingly, a fraction of LAEs seem to host an Active Galactic Nuclei (AGN). I will present our recent work in this talk, radiative transfer cosmological simulations of a prototypical z=6.6 LAE. I will show that this indeed is possible and introduces a simple but solid diagnostic tool to unambiguously assess if the LAE luminosity is powered by an AGN or by starburst.