{"id":169,"date":"2009-10-13T06:53:47","date_gmt":"2009-10-13T11:53:47","guid":{"rendered":"http:\/\/blog.richmond.edu\/physicsbunn\/2009\/10\/13\/new-paper-out-on-the-arxiv\/"},"modified":"2009-10-13T06:53:47","modified_gmt":"2009-10-13T11:53:47","slug":"new-paper-out-on-the-arxiv","status":"publish","type":"post","link":"https:\/\/blog.richmond.edu\/physicsbunn\/2009\/10\/13\/new-paper-out-on-the-arxiv\/","title":{"rendered":"New paper out on the arXiv"},"content":{"rendered":"

My colleagues and I just submitted a paper<\/a> about some of the technical issues associated with QUBIC<\/a>, the new bolometric interferometer we’re trying to build for measuring the polarization of the microwave background.\u00a0 In case you care, QUBIC stands for Q\/U Bolometric Interferometer for Cosmology (and Q and U are the symbols for the two Stokes parameters<\/a> that characterize linear polarization).\u00a0 QUBIC is the merger of MBI <\/a>(from the US)\u00a0 and BRAIN (from Europe).\u00a0 It’s what I’m here in Paris working on.<\/p>\n

The paper addresses one concern that many people, both within the collaboration and outside, have worried about.\u00a0 Traditionally, interferometers are narrow-band instruments — that is, they look at radiation within just a narrow range of wavelengths.\u00a0 There’s a good reason for that: the whole idea of interferometry is to produce interference patterns out of the waves, and interference patterns get washed out when you have a wide range of wavelengths.\u00a0 The instrument we’re proposing to build is a broadband interferometer, so there is naturally some worry about how or whether it’ll work.\u00a0 We’ve made some general arguments before trying to quantify how much of a problem this’ll be.\u00a0 This paper goes beyond those general arguments to lay out a detailed calculation showing that bandwidth issues don’t degrade the performance of the instrument too badly.<\/p>\n

Even more than a lot of academic papers, this one is really aimed at specialists.\u00a0 If you’re not interested in the details of CMB interferometry, it’s not for you.<\/p>\n","protected":false},"excerpt":{"rendered":"

My colleagues and I just submitted a paper about some of the technical issues associated with QUBIC, the new bolometric interferometer we’re trying to build for measuring the polarization of the microwave background.\u00a0 In case you care, QUBIC stands for Q\/U Bolometric Interferometer for Cosmology (and Q and U are the symbols for the two … Continue reading New paper out on the arXiv<\/span><\/a><\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-169","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/posts\/169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/comments?post=169"}],"version-history":[{"count":0,"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/posts\/169\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/media?parent=169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/categories?post=169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.richmond.edu\/physicsbunn\/wp-json\/wp\/v2\/tags?post=169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}