{"id":10032,"date":"2026-02-18T14:42:28","date_gmt":"2026-02-18T09:12:28","guid":{"rendered":"https:\/\/www.isical.ac.in\/~pamu\/?post_type=event&#038;p=10032"},"modified":"2026-02-24T16:10:18","modified_gmt":"2026-02-24T10:40:18","slug":"exploring-the-cosmos-with-future-cmb-polarisation-data","status":"publish","type":"event","link":"https:\/\/oldweb.isical.ac.in\/~pamu\/event\/exploring-the-cosmos-with-future-cmb-polarisation-data\/","title":{"rendered":"Exploring the Cosmos with future CMB polarisation data"},"content":{"rendered":"<p><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">The study of the cosmos has advanced significantly over the past three decades through measurements of the Cosmic Microwave Background (CMB) temperature anisotropies with unprecedented precision, as well as polarisation anisotropies with moderate sensitivity. In the coming decades, CMB polarisation will be measured with substantially higher sensitivity by experiments such as <\/span><strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">LiteBIRD<\/span><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">, the <\/span><strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">Simons Observatory<\/span><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">, and other forthcoming missions. The primary scientific objective of these experiments is the detection of <\/span><strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">primordial B-mode polarisation<\/span><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\"> in the CMB. The same data will also enable the exploration of new physics, including <\/span><strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">cosmic birefringence<\/span><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\"> (parity-violating effects in CMB photons) and extensions to the standard cosmological model, particularly those aimed at alleviating the <\/span><strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">Hubble tension<\/span><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">. In this talk, I will present the prospects for detecting primordial B-mode signals with <\/span><strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">LiteBIRD<\/span><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\"> and other proposed experiments in the presence of various foreground complexities. I will also discuss two novel science cases\u2014<\/span><strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">cosmic birefringence<\/span><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\"> and <\/span><strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">Rayleigh scattering<\/span><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">\u2014which are being targeted as potential extensions of the standard model of cosmology.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The study of the cosmos has advanced significantly over the past three decades through measurements of the Cosmic Microwave Background (CMB) temperature anisotropies with unprecedented precision, as well as polarisation anisotropies with moderate sensitivity. In the coming decades, CMB polarisation will be measured with substantially higher sensitivity by experiments such as LiteBIRD, the Simons Observatory, [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","categories":[107],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/event\/10032"}],"collection":[{"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/event"}],"about":[{"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/types\/event"}],"version-history":[{"count":1,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/event\/10032\/revisions"}],"predecessor-version":[{"id":10040,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/event\/10032\/revisions\/10040"}],"wp:attachment":[{"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/media?parent=10032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/categories?post=10032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oldweb.isical.ac.in\/~pamu\/wp-json\/wp\/v2\/tags?post=10032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}