[time-nuts] How good is the left end of your ADEV curve?

Jim Palfreyman jim77742 at gmail.com
Wed Jan 25 19:46:36 EST 2017

First, a picky - but important - point. There is a difference between
"gravity waves" and "gravitational waves". When you go to the beach and
watch the waves crash on the shore, that's an example of a gravity wave.

Now, onto the far more interesting topic of gravitational waves and my pet
topic, pulsars.

Pulsars most likely give off gravitational waves. The rotate at a rate
anywhere from 1/12 Hz to 716 Hz. The brightest (in a radio sense) and one
of the closest pulsars is the Vela pulsar which rotates at 11.18677266 Hz
(as of a few days back). This frequency is in the sensitivity bands of
Advanced LIGO and Advanced VIRGO, but the gravitational waves from Vela are
probably too "faint" to be detected. But there is still no harm in trying.

Jim Palfreyman

On 25 January 2017 at 16:15, Hal Murray <hmurray at megapathdsl.net> wrote:

> way way way left.
> Ray Weiss was the speaker at the Stanford Physics Colloquium today.  In
> case
> you don't recognize the name, he is one of the leaders of the LIGO project
> that detected gravity waves about a year ago.
> He's a good speaker with a neat topic.  He spent a lot of time giving
> credit
> to other people.
> One of the far-out future ideas he mentioned was collecting data on lots of
> pulsars.  If you could get good enough data, maybe you could see gravity
> waves wandering around the universe.  (Maybe leftover from the big bang.  I
> didn't catch that part.)
> The time scale is months or years.  Micro Hertz.  The unit for wavelength
> would be light-years.
> How long will it be before we need a gravity-nuts list?
> --
> These are my opinions.  I hate spam.
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