BEGIN:VCALENDAR VERSION:2.0 PRODID:-//wp-events-plugin.com//6.5.2//EN TZID:Europe/Brussels X-WR-TIMEZONE:Europe/Brussels BEGIN:VEVENT UID:0-743@sciences.brussels DTSTART;TZID=Europe/Brussels:20180207T203000 DTEND;TZID=Europe/Brussels:20180207T233000 DTSTAMP:20180118T112927Z URL:https://sciences.brussels/agenda/science-cocktails-4-seeing-with-new-e yes/ SUMMARY:Science & Cocktails #4 : Seeing with New Eyes DESCRIPTION:Unlocking the Mysteries of the Universe with Gravitational Wave s\nWhat are gravitational waves and where do they come from? Why couldn’ t we see them before? Which new things can we learn about the Universe?\n\ nThe new season of Science &\; Cocktails in Brussels begins with the st ory of some of the most violent events in the universe told by LIGO spokes person Laura Cadonati and the sound of Lil’Tone.\n\nGravitational waves are ripples in the fabric of space-time produced by catastrophic astrophys ical events. They are the most elusive prediction of Einstein’s theory o f General Relativity\, so feeble that Einstein himself thought their detec tion would be impossible.\n\nOne hundred years later\, the Laser Interfero meter Gravitational-wave Observatory (LIGO) achieved the impossible\, and observed a pulse of gravitational waves that were produced by the collisio n of two black holes dozens of times more massive than our sun. The otherw ise-invisible collision released in an instant gravitational waves with fi fty times more power than all the light emitted in the visible universe. T he waves arrived at Earth 1.3 billion years later on the morning of Septem ber 14\, 2015.\n\nLIGO consists of two 4-km interferometers\, which use la sers and suspended mirrors to measure the tiny changes in the metric of sp ace-time induced by the passage of gravitational waves. A similar detector \, called Virgo\, is operating in Italy. Over 1500 scientists worldwide ar e contributing to this quest today\, and many more black hole collisions h ave been discovered since.\n\nOn August 17\, 2017 a new kind of gravitatio nal wave signal reached both LIGO and Virgo\, from the collision of two ne utron stars in the Hydra constellation more than 100 million years ago. As the two neutron stars spiraled together\, they emitted gravitational wave s similar to those from the black holes we had seen\; but unlike the black holes\, when they collided\, they emitted a tremendous fireball of light\ , called a gamma ray burst\, and then in the days and weeks following an a fterglow of radiation\, known as a kilonova\, continued to shine. Thousand s of astronomers worked together to simultaneously observe this event\, an d a wealth of new information was learned by combining these gravitational waves and electromagnetic waves at different wavelengths.\n\nThese ground breaking discoveries have marked the opening of a new window on the Univer se and a new era of gravitational wave astrophysics\, where gravitational waves provide new insights into black holes and neutron stars\, and may ev en reveal new objects. The future is gravitational-wave bright!\n\nAfterwa rds\, a cocktail menu filled with cloud-like flavours cooled down with dry ice while Lil’Tone takes the stage with lo-fi pop rock with cosmic\, ps ychedelic\, folk and punk vibrations.\n\n \;\n\nEntrance to the event is free and it is held in English. Free registration is necessary here. D oors open at 19:30.\n\n \; ATTACH;FMTTYPE=image/jpeg:https://sciences.brussels/wp-content/uploads/201 8/01/GravWaves.jpg CATEGORIES:Chercheurs,Enseignants,Étudiants,Passionnés LOCATION:Atelier 210\, Chaussée de Saint-Pierre 210\, Bruxelles\, 1040\, B elgium GEO:50.83714;4.391568 X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Chaussée de Saint-Pierre 2 10\, Bruxelles\, 1040\, Belgium;X-APPLE-RADIUS=100;X-TITLE=Atelier 210:geo :50.83714,4.391568 END:VEVENT BEGIN:VTIMEZONE TZID:Europe/Brussels X-LIC-LOCATION:Europe/Brussels BEGIN:STANDARD DTSTART:20171029T020000 TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET END:STANDARD END:VTIMEZONE END:VCALENDAR