{"id":16021,"date":"2025-04-26T01:03:17","date_gmt":"2025-04-26T01:03:17","guid":{"rendered":"https:\/\/exam.pscnotes.com\/current-affairs\/?p=16021"},"modified":"2025-04-26T01:04:19","modified_gmt":"2025-04-26T01:04:19","slug":"helium-in-the-sun","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/current-affairs\/helium-in-the-sun\/","title":{"rendered":"Helium in the Sun"},"content":{"rendered":"<ul>\n<li><strong>New Method Developed:<\/strong> Indian Institute of Astrophysics (IIA) scientists have developed a novel method to accurately estimate Helium abundance in the Sun&#8217;s photosphere.<\/li>\n<li><strong>Indirect Spectral Analysis:<\/strong> The method uses spectral lines of neutral Magnesium (Mg I) and neutral Carbon (C I), along with molecular lines of MgH, CH, and C\u2082 observed in the Sun\u2019s photosphere.<\/li>\n<li><strong>Helium&#8217;s Impact on Hydrogen:<\/strong> The method is based on the principle that the relative abundance of Helium affects the availability of Hydrogen, which in turn influences the formation and strength of molecular lines.<\/li>\n<li><strong>Validation of Solar Value:<\/strong> The researchers matched the atomic and molecular abundances of Magnesium and Carbon for different Helium-to-Hydrogen (He\/H) ratios, confirming that only at a He\/H ratio of ~0.1 do the atomic and molecular line abundances agree.<\/li>\n<li><strong>Challenge Addressed:<\/strong> This new study addresses the challenge of accurately measuring Helium abundance in the Sun&#8217;s photosphere, which has been difficult due to the absence of Helium spectral lines.<\/li>\n<li><strong>Agreement with Helioseismology:<\/strong> The derived He\/H ratios are in fair agreement with results obtained through helioseismological studies, signifying the reliability and accuracy of the novel technique.<\/li>\n<li><strong>Confirms Widely Assumed Ratio:<\/strong> This study also confirms that the widely assumed and adopted (He\/H) ratio of 0.1 is in fair agreement with the measurements.<\/li>\n<li><strong>Potential for Assessing Opacity:<\/strong> This accurate estimation of Helium abundance could be a major step in assessing the opacity of the Sun\u2019s photosphere.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>New Method Developed: Indian Institute of Astrophysics (IIA) scientists have developed a novel method to accurately estimate Helium abundance in the Sun&#8217;s photosphere. Indirect Spectral Analysis: The method uses spectral lines of neutral Magnesium (Mg I) and neutral Carbon (C I), along with molecular lines of MgH, CH, and C\u2082 observed in the Sun\u2019s photosphere. &#8230; <a title=\"Helium in the Sun\" class=\"read-more\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/helium-in-the-sun\/\" aria-label=\"Read more about Helium in the Sun\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":16038,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[595],"tags":[1285],"class_list":["post-16021","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-current-affairs","tag-25-04-25"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Helium in the Sun - Current Affairs Exam<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/helium-in-the-sun\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Helium in the Sun\" \/>\n<meta property=\"og:description\" content=\"New Method Developed: Indian Institute of Astrophysics (IIA) scientists have developed a novel method to accurately estimate Helium abundance in the Sun&#8217;s photosphere. Indirect Spectral Analysis: The method uses spectral lines of neutral Magnesium (Mg I) and neutral Carbon (C I), along with molecular lines of MgH, CH, and C\u2082 observed in the Sun\u2019s photosphere. ... 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Indirect Spectral Analysis: The method uses spectral lines of neutral Magnesium (Mg I) and neutral Carbon (C I), along with molecular lines of MgH, CH, and C\u2082 observed in the Sun\u2019s photosphere. ... 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