{"id":37371,"date":"2022-09-22T09:34:03","date_gmt":"2022-09-22T14:34:03","guid":{"rendered":"http:\/\/huewhite.com\/umb\/?p=37371"},"modified":"2022-09-22T09:34:03","modified_gmt":"2022-09-22T14:34:03","slug":"word-of-the-day-830","status":"publish","type":"post","link":"https:\/\/huewhite.com\/umb\/2022\/09\/22\/word-of-the-day-830\/","title":{"rendered":"Word Of The Day"},"content":{"rendered":"

Time-domain astronomy<\/em>:<\/p>\n

Time-domain astronomy<\/b>\u00a0is the study of how\u00a0astronomical objects<\/a>\u00a0change with time. Though the study may be said to begin with Galileo’s\u00a0Letters on Sunspots<\/a><\/i>, the term now refers especially to variable objects beyond the\u00a0Solar System<\/a>. This may be due to movement or changes in the object itself. Common targets included are\u00a0supernovae<\/a>,\u00a0pulsating stars<\/a>,\u00a0novas<\/a>,\u00a0flare stars<\/a>,\u00a0blazars<\/a>\u00a0and\u00a0active galactic nuclei<\/a>. Visible light time domain studies include\u00a0OGLE<\/a>,\u00a0HAT-South<\/a>,\u00a0PanSTARRS<\/a>,\u00a0SkyMapper<\/a>,\u00a0ASAS<\/a>,\u00a0WASP<\/a>,\u00a0CRTS<\/a>, and in a near future the LSST at the\u00a0Vera C. Rubin Observatory<\/a>. [Wikipedia<\/strong><\/a>]<\/em><\/p><\/blockquote>\n

Noted in “The time-lapse telescope that will transform our view of the universe<\/em><\/a>,” Stuart Clark, NewScientist<\/strong><\/em> (3 September 2022, paywall):<\/p>\n

All-in-all, this represents a coming of age for a discipline called time-domain astronomy, which seeks to understand how celestial objects change with time. \u201cIt is going to be a giant leap,\u201d says\u00a0Mario\u00a0Juri\u0107<\/a>, director of the Institute for\u00a0Data\u00a0Intensive Research in Astrophysics and Cosmology<\/a>\u00a0(DIRAC Institute) at the University of Washington in Seattle, who is a data management project scientist for the LSST. \u201cWe\u2019re going to see 10 per cent of everything that\u2019s in the Milky Way with this one machine.\u201d That accounts for around 20 billion stars, and because of Rubin\u2019s light-gathering power and speed, it will detect even slight changes in the brightness and position of objects.<\/p><\/blockquote>\n

One may think of science as bounded by quantum mechanics (subsuming chemistry, if you will), the study of the smallest objects and phenomena, at one end of the spectrum, and astronomy, the study of the largest. It’s crude, yes, and astronomy is a result of quantum mechanics – or so I surmise – but the point here is that both ends of the spectrum are difficult enough to study in terms of process and transformation that they often require special observational aids tuned to their needs. Quantum mechanic scientists employ cameras and other detectors sampling the data stream in very small time chunks; astronomers must build telescopes, but have had trouble continuously monitoring their subjects.<\/p>\n

Time-domain astronomy is a bid to remedy this serious problem.<\/p>\n","protected":false},"excerpt":{"rendered":"

Time-domain astronomy: Time-domain astronomy\u00a0is the study of how\u00a0astronomical objects\u00a0change with time. Though the study may be said to begin with Galileo’s\u00a0Letters on Sunspots, the term now refers especially to variable objects beyond the\u00a0Solar System. This may be due to movement or changes in the object itself. Common targets included are\u00a0supernovae,\u00a0pulsating \u2026 Continue reading → <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-37371","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/37371","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/comments?post=37371"}],"version-history":[{"count":1,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/37371\/revisions"}],"predecessor-version":[{"id":37372,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/37371\/revisions\/37372"}],"wp:attachment":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/media?parent=37371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/categories?post=37371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/tags?post=37371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}