So pulsar are neutron stars that have a magnetic field, and they're like a beacon in the sky.
about pulsars and plate tectonics and evolutionary biology and pollution in the environment, it was not analyzed often by, by statisticians.
or pulsars or quasars, that radio astronomers would like to study.
She discovered the first pulsar .
Jocelyn discovered the first pulsars , but instead of sharing credit, her principal investigator took the credit.
of those pulsars . Actually, another interesting bit is that in the future, the pulsars ' location and their timing, their frequency will slightly drift.
be able to detect with these pulsar timing arrays, which are coming from the mergers of supermassive black holes.
and realized that it was a radio pulsar .
Today we understand that these pulsars are actually neutron stars.
It's one of the millisecond pulsars .
of sight to these radio pulsars in the sky that have very, very stable clocks?
And if we can time these radio pulsars to very high precision, the gravitational wave string we are
Just because of the way our pulsars are distributed, we are more sensitive in some directions compared to other directions.
objects eventually um are the discovery of pulsars by um Bell and Huish and the
the line of sight from us to the pulsar is going to stretch and squeeze, stretch and squeeze.
And I remember one day going back and forth on the Pulsar , which was the name of our bus that drove us to this place.
win the Nobel Prize in physics for the discovery of the pulsar , who won the Nobel Prize?
And that means that we need timing of these pulsars to a precision of tens of nanoseconds over long periods of time.
We are looking for a change where all the pulsars in this part of the sky appear to speed up a little bit and all the pulsars
I already showed you Jocelyn Bell and her discovery of radio pulsars , which was this little bit of scruff in the radio sky that she went back to over and over
got to be able to tell it apart from pulsars , which are simple on and off.
We thought it was aliens until we learned what pulsars were. Pulsars , as you may know, when a star goes supernova, it collapses.
Each of these lines represents the distance from those pulsars .
Each of these lines represents the distance from those pulsars and the binary code that is stitched along there represents the frequency
Some of it may be involved with more pedestrian things like pulsars and energetic magnetic fields around stars.
She is now avery distinguished scientist and she discovered pulsars about 40 years ago andanyway, students were asking her, “Are you sorry you didn’t get the NobelPrize?”
produces so when natural sources of emission like pulsars or molecular
Now, that was a pretty sedate radio pulsar .
It's the Vela Pulsar .
Last one I'm gonna play for you is the second fastest pulsar known.
And so every year, we add more pulsars to our detector.
And the binary code that is stitched along there represents the frequency of those pulsars .
So what you're seeing in this graph is basically each of these dots represents a pulsar that we're timing over the years.
We've launched on our space probes, like Voyager, pulsar maps, in that case, which shows the location of our solar system
Supernova they think of a huge massive star that collapses in on itself and produces a black hole or or a pulsar at the center and then this High Velocity
And one of the things that we're looking for is we're looking for a correlated change in the timing of these pulsars .
This is basically our limit on gravitational waves that we have detected so far with 11 years of timing pulsars .
As I said, every year our data set gets larger because we add more pulsars , and the pulsars we are timing, we time for longer durations.
In fact, nobody had any examples of planetary systems anywhere except here and one weirdo with pulsars .
Freeman Dyson: Well I remember Joyce… Jocelyn Bell, the lady who discovered pulsarsnever got the Nobel Prize and she was here talking
You can guess from the picture that this is a pulsar .
And that's not the only pulsar that there are.
We've launched on our space probes, like Voyager, maps, pulsar maps in that case, which shows the location of our solar system
But the first time that we really believed that one of these claims was real was in 1992, a detection of two planets around a pulsar .
populism 1.0, which was a global thing, Brexit, yellow vest pulsar , the first Trump administration, the pandemic, what we're seeing
And then we have the strongly coupled plasmas, which are extremely dense, for example, in white dwarfs or in pulsars .
Anyway, as Chandra said, I have done a lot of work on neutron stars, on radio pulsars , and on black holes.
So the first thing I want to start off with is this discovery of radio pulsars .
As I said, every year, we are looking for more pulsars and we are adding to our detector.
You know, we can use like pulsars to measure