Using pulsars to detect gravitational waves from blackholes

Looks like we're not going to need LISA, or LIGO, etc. Pulsar timings
will do -- or maybe not?

Yousuf Khan

Gravitational waves “know” how black holes grow | Astronomy.com
http://www.astronomy.com/news/2013/1...ack-holes-grow

On a sunny day (Tue, 22 Oct 2013 02:13:31 -0400) it happened Yousuf Khan
wrote in :

Looks like we're not going to need LISA, or LIGO, etc. Pulsar timings
will do -- or maybe not?
Gravitational waves “know” how black holes grow | Astronomy.com
http://www.astronomy.com/news/2013/1...ack-holes-grow


quote
"should give astronomers the accuracy to detect gravitational waves \u201cwithin 10 years,"
end quote

Yes, and fusion power was 10 years too, 50 years ago.

What I do not get is that these religious einstein fanatics never consider his theory is wrong.

I have a theory:
Tell them we need break even fusion in a year or find some job.
Tell them we need interstellar travel within a year or find a job.

This will WORK!
Put some reward money may help too.

What shocked me in the news today was in sci.space.news subject line:
"Subject: NASA Administrator to Visit Goddard in First Trip to a Field Center Post-Shutdown"

Von Braun would have been there all the time....

We really need WW3 and total destruction and may the best one win.
And that may just be the one with real science.
Not some * politician assigning brain dead to hopeless green projects.

Either the best one wins, or we go dinosaurs.
Dark ages are sort of guaranteed in both cases for a significant while...

But we came a long way since the basic elements were earth water and fire.
One step forward, one to the left, one to the right
one backward, 1.005 forward OK.

In article ,
Yousuf Khan writes:
Looks like we're not going to need LISA, or LIGO, etc. Pulsar timings
will do -- or maybe not?

Not. Pulsar timing measures gravitational waves with parsec
wavelengths. LIGO is km-scale, LISA Gm if I've done the conversion
right. We'd like measurements on all scales.

The pulsar timing preprint is at http://xxx.lanl.gov/abs/1310.4569

--
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Steve Willner Phone 617-495-7123
Cambridge, MA 02138 USA

On 28.10.13 23:01, Steve Willner wrote:
In ,
Yousuf writes:
Looks like we're not going to need LISA, or LIGO, etc. Pulsar timings
will do -- or maybe not?

Not. Pulsar timing measures gravitational waves with parsec
wavelengths. LIGO is km-scale, LISA Gm if I've done the conversion
right. We'd like measurements on all scales.

The pulsar timing preprint is at http://xxx.lanl.gov/abs/1310.4569

What makes you think we can measure gravitational waves?
Last time I heard, we still get only instrument noise.....
We need a nice, close-by, blackhole merger, so we can
verify proper operation of all those expensive toys.

On a sunny day (Mon, 28 Oct 2013 22:01:10 +0000 (UTC)) it happened
(Steve Willner) wrote in :

In article ,
Yousuf Khan writes:
Looks like we're not going to need LISA, or LIGO, etc. Pulsar timings
will do -- or maybe not?

Not. Pulsar timing measures gravitational waves with parsec
wavelengths. LIGO is km-scale, LISA Gm if I've done the conversion
right. We'd like measurements on all scales.

LOL too bad you never measured a freaking thing :-)

On 28/10/2013 8:26 PM, Sjouke Burry wrote:
What makes you think we can measure gravitational waves?
Last time I heard, we still get only instrument noise.....
We need a nice, close-by, blackhole merger, so we can
verify proper operation of all those expensive toys.

Still not sure if blackhole mergers create supernova-like explosions.
Wouldn't want one to happen too close.

Yousuf Khan