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SUMMARY:Webinar: Cutoff in the Lyman-alpha forest power spectrum: warm IGM
  or warm dark matter?
DTSTART;VALUE=DATE-TIME:20151110T140000Z
DTEND;VALUE=DATE-TIME:20151110T150000Z
DTSTAMP;VALUE=DATE-TIME:20260929T021246Z
UID:indico-event-2624@indico.ific.uv.es
DESCRIPTION:\n    We review how the Lyman-alpha forest\, one of the observ
 ables of the intergalactic medium\, can be used to constraint the warmness
  of dark matter. We re-analyse high redshift and high resolution Lyman-alp
 ha forest spectra from (Viel et al 2013) seeking to constrain properties o
 f warm dark matter particles.  Compared to the previous work we consider 
 a wider range on thermal histories of the intergalactic medium and find th
 at both warm and cold dark matter models can explain the cut-off observed 
 in the flux power spectra of high-resolution observations equally well.  
 This implies\, however\, very different thermal histories and underlying r
 e-ionisation models. We discuss the implication of our new constraints of 
 warm dark matter on realistic sterile neutrino models. We illustrate a new
  method to constrain the intergalactic medium thermal history\, and we dis
 cuss how to remove the degeneracy between temperature and the warmness of 
 dark matter.\n\nhttps://indico.ific.uv.es/event/2624/
LOCATION:IFIC retransmitted from Seminar Room\, 1.1.1
URL:https://indico.ific.uv.es/event/2624/
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