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SUMMARY:José Luis Bernal (Johns Hopkins University)
DTSTART:20200511T220000Z
DTEND:20200511T230000Z
DTSTAMP:20260423T021057Z
UID:CosmoConB/9
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CosmoConB/9/
 ">Robustness of BAO Constraints to Beyond ΛCDM Cosmologies AND the Cosmic
  Expansion History from Line Intensity Mapping</a>\nby José Luis Bernal (
 Johns Hopkins University) as part of CosmoConβ - Cosmology from Home\n\n\
 nAbstract\nBaryon acoustic oscillations (BAO) measurements are key to cons
 train cosmology at low redshift. While the standard BAO analysis is claime
 d to return model-independent constraints of the expansion history of the 
 Universe\, it assumes a LCDM fiducial cosmology. This assumption may limit
  the validity and robustness of BAO measurements to constrain beyond-LCDM 
 cosmologies\, challenging their model-independent nature. We demonstrate t
 hat standard BAO analysis assuming a fiducial LCDM cosmology is unbiased w
 hen using synthetic power spectra from extended cosmologies\, and find tha
 t the H0 tension cannot be solved by modifying only the neutrino phase shi
 ft. In addition\, we explore the potential of using the intensity mapping 
 of molecular lines to extend BAO measurements to higher redshifts and the 
 implications for the H0 tension.\n\nVideo of Talk: <a href="https://www.yo
 utube.com/watch?v=WiTcAUXIUO4">https://www.youtube.com/watch?v=WiTcAUXIUO4
 </a>\n\nRelevant Papers:<br>\n<a href="https://arxiv.org/abs/2004.07263">[
 2004.07263] Robustness of baryon acoustic oscillations constraints to beyo
 nd-$Λ$CDM cosmologies</a>\, by José Luis Bernal\, Tristan L. Smith\, Kim
 berly K. Boddy\, Marc Kamionkowski<br>\n<a href="https://arxiv.org/abs/190
 7.10065">[1907.10065] The Cosmic Expansion History from Line-Intensity Map
 ping</a>\, by José Luis Bernal\, Patrick C. Breysse\, Ely D. Kovetz<br>\n
LOCATION:https://researchseminars.org/talk/CosmoConB/9/
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