{"id":5056,"date":"2026-05-13T15:09:18","date_gmt":"2026-05-13T19:09:18","guid":{"rendered":"https:\/\/oge.mit.edu\/msrp\/?post_type=profiles&#038;p=5056"},"modified":"2026-08-10T11:59:12","modified_gmt":"2026-08-10T15:59:12","slug":"mary-precious-feutsop-ngouane","status":"publish","type":"profiles","link":"https:\/\/oge.mit.edu\/msrp\/profiles\/mary-precious-feutsop-ngouane\/","title":{"rendered":"Mary Precious Feutsop Ngouane"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"599\" src=\"https:\/\/oge.mit.edu\/msrp\/wp-content\/uploads\/sites\/2\/2026\/05\/Ngouane-Mary-Precious.jpg\" alt=\"by Corban Swain\" class=\"wp-image-5618\" style=\"aspect-ratio:1;object-fit:cover;width:200px;height:auto\" srcset=\"https:\/\/oge.mit.edu\/msrp\/wp-content\/uploads\/sites\/2\/2026\/05\/Ngouane-Mary-Precious.jpg 400w, https:\/\/oge.mit.edu\/msrp\/wp-content\/uploads\/sites\/2\/2026\/05\/Ngouane-Mary-Precious-200x300.jpg 200w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div>\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\"><strong>Carleton College<\/strong><br>Faculty Advisor: Prof. Kiyoshi Masui<br>Research Supervisor: Ryan Raikman<br>Department: Physics<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Biography<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Mary Precious is a Physics and Computer Science major at Carleton College, whose<br>research runs from galaxy evolution to cosmology. She uses cosmological simulations to<br>trace how merging dwarf galaxies shaped the Milky Way, which she has shared at multiple<br>conferences, including an oral talk at the American Astronomical Society, and is now writing<br>as the first author. Precious has also worked in experimental optics with light-shaped polymers,<br>building and characterizing optical instruments and the systems that push their precision.<br>This summer, as an MSRP researcher at MIT, she is using fast radio bursts to track down the<br>universe&#8217;s missing baryons. Precious is also passionate about making physics inclusive and<br>accessible. That commitment led to her role as a student ambassador for the American Physical<br>Society and as an APS Advocacy Champion. She works to advance science policy and broaden<br>support for physics and its future.<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><br><strong>Where are the Missing Baryons?: A Modular Framework for FRB<br>Cross-Correlation Analyses<br>Mary Precious Ngouane1, Ryan Raikman2,3 and Kiyoshi Masui2,3<\/strong><br>1Department of Physics and Astronomy, Carleton College<br>2Department of Physics, Massachusetts Institute of Technology<br>3MIT Kavli Institute for Astrophysics and Space Research<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><br>A large fraction of the universe&#8217;s ordinary matter resides as diffuse ionized gas that galaxy<br>surveys cannot detect directly. Fast radio bursts (FRBs), millisecond flashes of radio light<br>from extragalactic sources, let us probe this gas. Free electrons along each signal&#8217;s path delay<br>its frequencies by a measurable amount, the dispersion measure (DM). Cross correlating FRB<br>DMs and positions with galaxy maps has recently yielded first constraints on how this gas is<br>distributed around galaxies. This project consolidates and optimizes the theoretical modeling<br>for these analyses into an importable package, which takes a description of the universe and<br>predicts how DM and FRB positions trace galaxies in the sky. Because DM traces the gas<br>along the line of sight, a stronger small-scale correlation with galaxies means the gas sits in<br>halos, while a weaker one means feedback has expelled it. Independent code implementations<br>validate every statistic to percent-level agreement, the fitting code runs five times faster, and<br>automated tests confirm identical results. To interpret measurements, the framework supports<br>standard cosmological calculations, extended analytic methods reaching smaller scales, and<br>simulations that follow gas physics directly. Testing these models against data brings us closer<br>to where the universe keeps its ordinary matter.<\/p>\n","protected":false},"featured_media":5460,"template":"","profile_category":[25],"class_list":["post-5056","profiles","type-profiles","status-publish","has-post-thumbnail","hentry","profile_category-2026-interns"],"acf":[],"_links":{"self":[{"href":"https:\/\/oge.mit.edu\/msrp\/wp-json\/wp\/v2\/profiles\/5056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oge.mit.edu\/msrp\/wp-json\/wp\/v2\/profiles"}],"about":[{"href":"https:\/\/oge.mit.edu\/msrp\/wp-json\/wp\/v2\/types\/profiles"}],"version-history":[{"count":4,"href":"https:\/\/oge.mit.edu\/msrp\/wp-json\/wp\/v2\/profiles\/5056\/revisions"}],"predecessor-version":[{"id":5698,"href":"https:\/\/oge.mit.edu\/msrp\/wp-json\/wp\/v2\/profiles\/5056\/revisions\/5698"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oge.mit.edu\/msrp\/wp-json\/wp\/v2\/media\/5460"}],"wp:attachment":[{"href":"https:\/\/oge.mit.edu\/msrp\/wp-json\/wp\/v2\/media?parent=5056"}],"wp:term":[{"taxonomy":"profile_category","embeddable":true,"href":"https:\/\/oge.mit.edu\/msrp\/wp-json\/wp\/v2\/profile_category?post=5056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}