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Gravitational waves: A new astronomy

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Published on Sep 20, 2016

14. 9. 2016 Gravitacijski valovi - nova doba v astronomiji / Gravitational waves: A new astronomy
prof. Sheila Rowan (Institute for Gravitational Research, University of Glasgow, UK)

Public lecture given at the International Astronomical Union Symposium 324: New Frontiers in Black Hole Astrophysics,Ljubljana, Slovenia, www.blackholes2016.si

Gravitacijski valovi, majhno vzvalovanje prostorčasa, nastanejo pri najsilovitejših oziroma najbolj burnih pojavih, pri katerih sodelujejo najbolj eksotična telesa v našem vesolju, kakršna so črne luknje, nevtronske zvezde in supernove. Skoraj 100 let po napovedi obstoja gravitacijskih valov so jih detektorji observatorija LIGO (Laserski interferometrski observatorij za gravitacijske valove) prvič neposredno zaznali in s tem se je začela nova doba v astronomiji. Na predavanju bomo govorili o naravi gravitacijskih valov, predstavili bomo, kakšni in kateri so lahko njihovi izvori v vesolju in razložili, kako jih zaznamo ter kakšna bo videti (in slišati) prihodnost te nove dobe v astronomiji.

Ripples in the curvature of space-time – `gravitational waves’ – are produced by some of the most energetic and dramatic phenomena in our universe, including black holes, neutron stars and supernovae. Close to 100 years after the prediction of the existence of gravitational waves, the advanced detectors of the Laser Interferometer Gravitational-wave Observatory (LIGO) detected such signals for the first time, starting a new era in astronomy. This talk will explain the nature of gravitational waves, describe what sources out in the Universe can produce them, explain how they are detected and what the future of this new era in astronomy might look (and sound) like.

http://www.ung.si

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