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<p>Reminder: happening in ~2 hours. </p>
<div class="moz-cite-prefix">On 11/21/25 4:32 PM, Pooyan Goodarzi
wrote:<br>
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cite="mid:54ae54b1-eb80-48e5-8946-0bd36f04867a@email.ucr.edu">
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<p>Hi everyone,</p>
<p><br>
</p>
<p>We will have our next PASS on <b>Monday, October 24</b> with
an interesting talk by Garett. Please join us at noon (<b>from
12:00 to 1:00 pm</b>) in the <b>Nebula Room</b> (PHYS 3027). </p>
<p><br>
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<p align="center"><b>Garett Lopez, PhD Candidate<br>
</b>Monday, 12:00 pm, Nebula Room (PHYS 3027)</p>
<p align="center"><b>What the CMB and Lyman-Alpha forest can teach
us about reionization and early galaxies </b></p>
<p align="center"><b><br>
</b></p>
<div align="center">A key result from JWST’s first two cycles is
that galaxy formation was well underway by z=10. The
implications of these early galaxies for reionization are less
clear, however, owing to the difficulty of inferring their
ionizing outputs from their non-ionizing spectral
characteristics. CMB measurements are still our best way to
constrain the ionization state of the IGM during reionization’s
first half, providing an important window into the sources of
ionizing photons at those times. In this talk, I will introduce
the reionization-CMB connection and use radiative transfer
simulations to discuss how measurements of the patchy kinetic
Sunyaev Zel’dovich (pkSZ) effect can be used to constrain the
early stages of reionization, especially when combined with
Lyman-alpha forest constraints on reionization's end. I will
also highlight how pkSZ measurements can complement JWST's
direct observations of the galaxy population and improve our
understanding of the ionizing sources during cosmic dawn.</div>
<div
id="m_-7314571423100097885m_-3414541767872711075m_9215603032040371864m_-1672972118947443868gmail-:1f4">
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<div dir="ltr">If you’re interested in sharing your work as a
speaker, please feel free to add your name to this
spreadsheet [<a
href="https://docs.google.com/spreadsheets/d/1N3ncf43jdB6aHYHhyWmyHMycxDg4_phHZXLkQvviO0o/edit?usp=sharing"
target="_blank" moz-do-not-send="true">Google Sheet</a>].
Recordings of all the previous talks are available on our
website: <a href="https://ucrpass.arxiv.social/"
target="_blank" class="moz-txt-link-freetext"
moz-do-not-send="true">https://ucrpass.arxiv.social</a>
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Best,<br>
Pooyan<br>
Physics and Astronomy Student Seminar (<span><span>PASS</span></span>)
<br>
<a href="https://ucrpass.arxiv.social/" target="_blank"
class="moz-txt-link-freetext" moz-do-not-send="true">https://ucrpass.arxiv.social</a></div>
</div>
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