Keynote – Sara Issaoun
summary
Event Horizon Telescope imaging produces a resolvable ring and measures a 42 microarcsecond shadow, implying a mass of about 6.5 billion suns. The array uses VLBI with maser clocks, records 3.5 petabytes recorded onto 736 hard drives, ships data to two correlators, and reduces terabytes to kilobytes through HOPS CASA and APES pipelines. The 2017 campaign triggers five observing days (four on M87), takes 1.5 years of calibration and blind multiple-team imaging to validate the ring brighter on the bottom.
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chapters (13)
- 0:00Intro
- 3:34The Event Horizon Telescope Collaboration
- 13:19The 2017 observations
- 19:49Understanding the data
- 21:37Understanding the telescopes
- 22:45MB: ready for analysis
- 32:59What is a black hole?
- 35:25What is the black hole shadow?
- 37:40The Polarized Simulation Library
- 38:07Measuring the mass of the black hole
- 38:21Measuring the size of the black hole
- 39:00EHT model fitting software
- 41:07What's next for the Event Horizon Telescope?
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