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<b><span class="x_ContentPasted0" style="font-size: 24pt; line-height: 107%; font-family: "Times New Roman", serif; color: rgb(0, 111, 192);"><img style="max-width:100%" class="ContentPasted0 w-975 h-296" size="216390" contenttype="image/png" data-outlook-trace="F:1|T:1" src="cid:5e58f537-bf9b-47e9-bc2c-48675b4b57e5"><br>
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<b><span class="x_ContentPasted0" style="font-size: 24pt; line-height: 107%; font-family: "Times New Roman", serif; color: rgb(0, 111, 192);">Astronomy Seminar</span></b><b><span style="font-size: 28pt; line-height: 107%; font-family: "Times New Roman", serif; color: rgb(0, 111, 192);"><br class="x_ContentPasted0">
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<i><span class="x_ContentPasted0" style="font-size:26.0pt; line-height:107%; font-family:"Times New Roman",serif">Probing Fundamental Physics by Mapping the Millimeter and Submillimeter Sky</span></i><span class="x_ContentPasted0" style="font-family:"Arial",sans-serif"> </span><b><i><span style="font-size:22.0pt; line-height:107%; font-family:"Times New Roman",serif"></span></i></b></p>
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<b><i><span class="x_ContentPasted0" style="font-size:28.0pt; line-height:107%; font-family:"Times New Roman",serif">Dr. Steve Choi</span></i></b><b><i><span style="font-size:26.0pt; line-height:107%; font-family:"Times New Roman",serif"><br class="x_ContentPasted0">
</span></i></b><i><span class="x_ContentPasted0" style="font-size:22.0pt; line-height:107%; font-family:"Times New Roman",serif">Cornell University<b></b></span></i></p>
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</span><b><span class="x_ContentPasted0" style="font-size: 12pt; line-height: 107%; background: white; color: black;">Abstract:
</span></b><span class="x_ContentPasted0" style="font-size:12.0pt; line-height:107%">Cosmology has transformed from a field of speculation to precision science as a result of a wealth of data from sensitive instruments. In particular, precise observations of
the cosmic microwave background (CMB) have revolutionized our understanding of the Universe. Despite the success of the standard model of cosmology (ËCDM) in describing much of the cosmos with just six parameters, many fundamental questions remain unresolved.
Are there primordial gravitational waves? Are there new light relic particles? How will the current cosmological tensions be resolved? Improved mapping of the millimeter and submillimeter sky will help address these questions. I will highlight recent results
from the Atacama Cosmology Telescope (ACT), and describe how the new ACT maps will advance our understanding of the Universe beyond Planck. I will also present recent progress on CCAT-prime and Simons Observatory that are paving the way for CMB-S4 in pursuit
of next generation cosmology</span><span class="x_ContentPasted0" style="font-family:"Arial",sans-serif">.</span><span style=""></span></p>
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<b><span class="x_ContentPasted0" style="color: rgb(47, 84, 150);">Monday, April 17th, 2023</span></b><span style="color: rgb(47, 84, 150);"></span></p>
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<b><span class="x_ContentPasted0" style="color: rgb(47, 84, 150);">2:00 p.m. in the Physics Reading Room (3035)</span></b><span style="color: rgb(47, 84, 150);"></span></p>
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