{"id":1441,"date":"2024-02-18T12:59:48","date_gmt":"2024-02-18T07:29:48","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=1441"},"modified":"2024-04-03T07:09:50","modified_gmt":"2024-04-03T01:39:50","slug":"q-with-reference-to-astrosat-the-astronomical-observatory-launched-by-india-which-of-the-following-statements-is-are-correct","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/q-with-reference-to-astrosat-the-astronomical-observatory-launched-by-india-which-of-the-following-statements-is-are-correct","title":{"rendered":"Q.\u00a0With reference to \u2018Astrosat\u2019, the astronomical observatory launched by India, which of the following statement(s) is\/are correct?"},"content":{"rendered":"\n
    \n
  1. Other than USA and Russia, India is the only country<\/strong> to have launched a similar observatory into space.<\/li>\n\n\n\n
  2. Astrosat is a 2000 kg<\/strong> satellite placed in an orbit at 1650 km<\/strong> above the surface of the Earth.<\/li>\n<\/ol>\n\n\n\n

    Select the correct answer using the codes given below.<\/p>\n\n\n\n

      \n
    • 1 only<\/li>\n\n\n\n
    • 2 only<\/li>\n\n\n\n
    • Both1 and 2<\/li>\n\n\n\n
    • Neither 1 nor 2<\/li>\n<\/ul>\n\n\n\n
      \n

      Answer: (d) Neither 1 nor 2<\/strong><\/p>\n<\/blockquote>\n\n\n\n

      Astrosat<\/h5>\n\n\n\n
        \n
      • AstroSat is India\u2019s first dedicated multi-wavelength space telescope<\/strong>.<\/li>\n\n\n\n
      • It is the first dedicated Indian astronomy mission<\/strong> aimed at studying celestial sources<\/strong> in X-ray, optical, and UV spectral bands simultaneously.<\/strong><\/li>\n\n\n\n
      • AstroSat, with a lift-off mass of 1515 kg,<\/strong> was launched<\/strong> by<\/strong> the Indian launch vehicle PSLV<\/strong> from Satish Dhawan Space Centre<\/strong>, Sriharikota, on September 28, 2015,<\/strong> into a 650 km orbit<\/strong> inclined at an angle of 6 degrees to the equator.<\/li>\n\n\n\n
      • The spacecraft control center<\/strong> at Mission Operations Complex (MOX) of ISRO Telemetry, Tracking and Command Network (ISTRAC), Bengaluru,<\/strong> manages the satellite<\/strong> during its entire mission life. <\/li>\n\n\n\n
      • The minimum<\/strong> useful life<\/strong> of the AstroSat mission is around 5 years.<\/strong><\/li>\n\n\n\n
      • Scientific Objectives:<\/strong>\n
          \n
        • To understand high energy processes in binary star systems<\/strong> containing neutron stars and black holes.<\/li>\n\n\n\n
        • Estimate magnetic fields of neutron stars.<\/strong><\/li>\n\n\n\n
        • Study star birth regions<\/strong> and high energy processes<\/strong> in star systems lying beyond our galaxy.<\/li>\n\n\n\n
        • Detect<\/strong> new briefly bright X-ray sources in the sky.<\/strong><\/li>\n\n\n\n
        • Perform a limited deep-field survey of the Universe<\/strong> in<\/strong> the Ultraviolet region.<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
          XpoSat<\/strong><\/h6>\n\n\n\n
            \n
          • XPoSat (X-ray Polarimeter Satellite)<\/strong> is India\u2019s first dedicated polarimetry mission to study various dynamics of bright astronomical X-ray sources in extreme conditions.<\/strong>\n
              \n
            • This study is crucial for understanding the physics behind these celestial bodies.<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n
            • Payloads:<\/strong>\n
                \n
              • The spacecraft will carry two scientific payloads in a low earth orbit.<\/strong> The primary payload POLIX (Polarimeter Instrument in X-rays)<\/strong> will measure the polarimetry parameters (degree and angle of polarization) in medium X-ray energy range of 8-30 keV photons of astronomical origin. The XSPECT (X-ray Spectroscopy and Timing)<\/strong> payload will give spectroscopic information in the energy range of 0.8-15 keV.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
              • Development:<\/strong>\n
                  \n
                • Entirely built by two Bengaluru-based institutes<\/strong>\u2014ISRO\u2019s UR Rao Satellite Centre and Raman Research Institute\u2014XPoSat\u2019s development began in 2008, with a formal agreement signed with ISRO in 2015.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                • Global Context:<\/strong>\n
                    \n
                  • XPoSat is only the world\u2019s second mission dedicated to X-ray polarization<\/strong> in the medium X-ray band. NASA\u2019s Imaging X-ray Polarimetry Explorer (IXPE),<\/strong> launched in 2021, was the first such mission by a space agency.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                  • National Contribution:<\/strong>\n
                      \n
                    • XPoSat will be India\u2019s third space-based observatory, following the recently launched solar mission Aditya-L1 and AstroSat,<\/strong> which was launched in 2015. Its launch is seen as a significant stride for Indian astronomy and space research.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                      Select the correct answer using the codes given below. Answer: (d) Neither 1 nor 2 Astrosat XpoSat<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1,3],"tags":[44],"years":[57],"class_list":["post-1441","post","type-post","status-publish","format-standard","hentry","category-upsc","category-prelims","tag-science-and-tech","years-57"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"UPSC"},{"value":3,"label":"Prelims"}],"post_tag":[{"value":44,"label":"Science and Tech"}],"years":[{"value":57,"label":"2016"}]},"featured_image_src_large":false,"author_info":{"display_name":"LotusArise","author_link":"https:\/\/lotusarise.com\/qna\/author\/team-lotusarise"},"comment_info":0,"category_info":[{"term_id":1,"name":"UPSC","slug":"upsc","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":1269,"filter":"raw","cat_ID":1,"category_count":1269,"category_description":"","cat_name":"UPSC","category_nicename":"upsc","category_parent":0},{"term_id":3,"name":"Prelims","slug":"prelims","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":1,"count":1251,"filter":"raw","cat_ID":3,"category_count":1251,"category_description":"","cat_name":"Prelims","category_nicename":"prelims","category_parent":1}],"tag_info":[{"term_id":44,"name":"Science and Tech","slug":"science-and-tech","term_group":0,"term_taxonomy_id":44,"taxonomy":"post_tag","description":"","parent":0,"count":167,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1441","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/comments?post=1441"}],"version-history":[{"count":1,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1441\/revisions"}],"predecessor-version":[{"id":1458,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1441\/revisions\/1458"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=1441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=1441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=1441"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=1441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}