The September meeting will take place on:
Wednesday September 19, 2018 8:00 pm
Chemistry - Physics Building
Memorial University of Newfoundland
- Speaker: "Dr. Ivan Booth - Neutron Star Collisions! Gravitational Waves and the New Multi-messenger Astronomy"
Massive dying stars explode as supernovae leaving behind neutron star or black hole remnants. Neutron stars are the most extreme states of directly observable matter in the universe. Weighing up to two solar masses, they are essentially 10km radius atomic nuclei held together by their own massive gravitational fields. With a little more mass they would collapse into a black hole.
In August 17, 2017 the gravitational wave observatory LIGO tracked its sixth gravitational wave signal. While the first five were mergers of pairs of black holes, this one was different and had the signature of the collision of two neutron stars. That observation triggered the largest ever astronomical collaboration: all the large telescopes in the world immediately turned to observe the event. Ultimately dozens of papers were published simultaneously ranging over astrophysics, nuclear physics, general relativity, cosmology and quantum gravity. It has been estimated that one-third of the worlds astronomers were co-authors on the summary paper!
These observations marked the birth of multi-messenger astronomy: the same event observed with both electromagnetic and gravitational waves. We are now in a new era for astronomy, general relativity, and astrophysics. In this talk we'll discuss gravitational waves, black holes and neutron stars, the amazing observations of the last few years and preview what's coming in the next few years. It's only going to get better!
(Note:- This talk is being cross-promoted as a "Science Literacy Week" event)
- Summer Events: A Review of our Past Summer's Events
- Observation Reports
- Observing Chair: The Sky Next Month
- RASC Calendars:
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Important Note: Parking is no longer permitted in Lot 5 (behind the building).
Lot 15B (next to the Music School) is available if the gate is up.
Please Note: Meetings normally take place on the 3rd Wednesday of each month, September to June.