Quantcast
  • Register
PhysicsOverflow is a next-generation academic platform for physicists and astronomers, including a community peer review system and a postgraduate-level discussion forum analogous to MathOverflow.

Welcome to PhysicsOverflow! PhysicsOverflow is an open platform for community peer review and graduate-level Physics discussion.

Please help promote PhysicsOverflow ads elsewhere if you like it.

News

PO is now at the Physics Department of Bielefeld University!

New printer friendly PO pages!

Migration to Bielefeld University was successful!

Please vote for this year's PhysicsOverflow ads!

Please do help out in categorising submissions. Submit a paper to PhysicsOverflow!

... see more

Tools for paper authors

Submit paper
Claim Paper Authorship

Tools for SE users

Search User
Reclaim SE Account
Request Account Merger
Nativise imported posts
Claim post (deleted users)
Import SE post

Users whose questions have been imported from Physics Stack Exchange, Theoretical Physics Stack Exchange, or any other Stack Exchange site are kindly requested to reclaim their account and not to register as a new user.

Public \(\beta\) tools

Report a bug with a feature
Request a new functionality
404 page design
Send feedback

Attributions

(propose a free ad)

Site Statistics

205 submissions , 163 unreviewed
5,047 questions , 2,200 unanswered
5,345 answers , 22,709 comments
1,470 users with positive rep
816 active unimported users
More ...

  Christodoulou gravitational wave memory

+ 3 like - 0 dislike
847 views

See background and references here: http://physics.stackexchange.com/questions/286529/is-ligo-able-to-detect-the-memory-effect-of-gravitational-waves

LIGO can detect a passing gravitational wave and derive some properties of the source, including energy and distance. After the passage of the gravitational wave a "Christodoulou memory" effect remains. The effect builds up monotonically over the passage of the gravitational wave and results in a permanent change in the distance between two test masses. The memory effect is one order of magnitude smaller than the peak of the wave, and still below LIGO threshold for the two gravitational wave signals confirmed so far, but can be studied with next-generation detectors and clever data analysis tricks.

I am guessing that, even with better detectors, measuring the memory effect alone after the passage of a gravitational wave wouldn't permit deriving the properties of the source (correct?). But perhaps many observations of many sources with many detectors in different places could permit deriving the properties of the sources? Suppose for example there are, say, three events and three detectors, one on Earth and two in other places in the solar system. Could the analysis of the three memory signals measured by the three detectors permit deriving some properties of the three sources?

asked Oct 17, 2016 in Experimental Physics by Giulio Prisco (190 points) [ no revision ]
recategorized Oct 17, 2016 by Dilaton

Your answer

Please use answers only to (at least partly) answer questions. To comment, discuss, or ask for clarification, leave a comment instead.
To mask links under text, please type your text, highlight it, and click the "link" button. You can then enter your link URL.
Please consult the FAQ for as to how to format your post.
This is the answer box; if you want to write a comment instead, please use the 'add comment' button.
Live preview (may slow down editor)   Preview
Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
If you are a human please identify the position of the character covered by the symbol $\varnothing$ in the following word:
p$\hbar\varnothing$sicsOverflow
Then drag the red bullet below over the corresponding character of our banner. When you drop it there, the bullet changes to green (on slow internet connections after a few seconds).
Please complete the anti-spam verification




user contributions licensed under cc by-sa 3.0 with attribution required

Your rights
...