Saturday January 6th
10:00 AM - 11:00 AM PST/SLT
"
The term 'black hole' conjures up many fanciful images, some of which are false,
and, surprisingly, many of which are true. To astronomers, 'black hole'
actually means two different things: first, the theoretical construct
predicted by General Relativity (GR), and second, the objects in space
that we have observationally confirmed; there is a subtle, at least
semantic, difference. For a long time, we’ve known of black holes that
are several to about ten times the mass of the Sun, observed as X-Ray
sources in our Galaxy. We’ve also known about black holes that are
millions to billions times the mass of the Sun, lurking at the cores of
galaxies. In the last few years, thanks to gravitational wave
observations, we’ve confirmed black holes that are thirty times the mass
of the Sun. Are there any in between? Do black holes hundreds or
thousands the mass of our Sun exist? If so, where are they hiding? In
this talk, I’ll outline our current knowledge of where black holes exist
in the Universe, and mention some of the remaining questions we have
about these exotic objects."
More information at:
https://www.sciencecircle.org/event/rob-knop/
The Science Circle (
61/126/32)
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