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X-WR-CALNAME:Tucson Amateur Astronomy Association
X-ORIGINAL-URL:https://tucsonastronomy.org
X-WR-CALDESC:Events for Tucson Amateur Astronomy Association
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DTSTART:20180101T000000
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DTSTART;TZID=America/Phoenix:20190906T183000
DTEND;TZID=America/Phoenix:20190906T210000
DTSTAMP:20260513T145636
CREATED:20190716T091421Z
LAST-MODIFIED:20190824T100334Z
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SUMMARY:General Meeting – September 2019
DESCRIPTION:6:30 pm – Introductory Presentation\nTitle:  Two Talks: Dark Sky NM Observatory and Bylaw Changes\nSpeaker 1: TAAA member Gregg Ruppel will talk about his Dark Sky New Mexico Observatory near Animas\, NM. \nSpeaker 2: TAAA member Doug Smith will provide information about two suggested TAAA Bylaws changes. \n7:30 pm – Main Presentation\nTitle:  Testing Einstein’s Gravity by Taking Photographs of Black Holes\nSpeaker:  Pierre Christian is a postdoc at the University of Arizona\, where he is the Steward Prize Fellow in theoretical and computational astrophysics. Previously\, he earned his doctorate from Harvard University\, where he worked on black hole astrophysics. At UA\, he is interested in using black holes to study gravitational physics. He is a member of the Event Horizon Telescope collaboration\, a worldwide scientific effort to take resolved images of black holes.\n \nPierre will describe the recent effort of the Event Horizon Telescope (EHT) collaboration in taking a high-resolution image of the black hole at the center of supergiant galaxy M87. He will first explain what a black hole is according to Einstein’s gravitational theory of general relativity. Then he will describe how a worldwide array of radio telescopes was used to capture an image of a black hole\, and how such experiments can be used to test our understanding of gravity.
URL:https://tucsonastronomy.org/event/general-meeting-september-2019/
LOCATION:Steward Observatory Lecture Hall (Room N210)\, 933 N Cherry Ave\, Tucson\, AZ\, 85721\, United States
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