• Starting date: 2025/01/13
  • End: 2025/01/17

  • LOCATION: Sport & Kurhotel at Bad Moos - Via Val Fiscalina 27, 39030, Sexten


    The birth of the first stars, galaxies and black holes heralded the end of the cosmic Dark
    Ages, ushering in the Cosmic Dawn. Light from these objects spread out, heating and
    ionizing virtually every baryon in our Universe. This Epoch of Reionization (EoR) was
    the last major phase change of our Universe, encoding a wealth of information about
    the unseen first galaxies and structures in the intergalactic medium (IGM). Despite
    spanning the majority of our visible Universe, the EoR has only recently begun to be
    explored. We now have many observational clues of the EoR, including from: (i) the
    opacity of the Lyman alpha and beta forests; (ii) damping wing imprints in QSO
    spectra; (iii) evolution of Lyman alpha emitting galaxies; (iv) clustering of Lyman alpha
    emitters; (v) CMB polarization power spectra; (vi) the kinetic Sunyaev-Zel’Dovich
    effect in CMB temperature fluctuations; (vii) the cosmic 21-cm signal. However,
    interpreting these observations is challenging, requiring careful modeling of both the
    cosmic signal as well as associated systematics.

    This workshop is a sequel to the extremely successful one in 2023. In the past couple
    of years, our sample of high redshift, high signal to noise quasar spectra has increased
    dramatically, we obtained tantalizing results from JWST about reionization-era
    galaxies, we demonstrated the heating of the IGM heating during the cosmic dawn
    implied by upper limits on the 21-cm power spectrum. This year we expect even more
    milestones in EoR studies. These include the start of science commissioning by the
    Square Kilometer Array (SKA), final design and performance analysis of the Extremely
    Large Telescope (ELT), new 21-cm power spectrum measurements/upper limits.
    In these exciting times, we wish to bring together the scientific community studying
    the EoR to discuss how best to interpret current observations and how we should design
    future ones. We will try to put together the pieces of the puzzle of reionization. What
    was the timing of the EoR? What sources were responsible? How did they interact
    with themselves and their surroundings through feedback mechanisms? What are the
    associated observational signatures? What was the role of IGM structures / photon
    sinks? How can we improve models of the EoR? How do we best build forward models,
    accounting for relevant theoretical and observational systematics? Where are the next
    observational breakthroughs? How do we best prepare for upcoming data from
    transformational telescopes like JWST, SKA, and ELT?

    We expect around 30-40 participants, by invitation only. These will span experts in
    observations, theory, as well as data science; breakthroughs in understanding require
    synergy between all three of these aspects.


    No files available yet.


    400 Eur



    Andrei Mesinger (chair), SNS, Pisa
    Laura Pentericci, INAF – OAR, Rome
    Matteo Viel, SISSA, Trieste
    Gianni Bernardi, INAF – IRA, Bologna
    Valentina D’Odorico, INAF – OAT, Trieste