|
| | | | |
| | | |
| Stat |
Members: 3644
Articles: 2'499'343
Articles rated: 2609
17 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Compact binary coalescences: The subtle issue of angular momentum | | Abhay Ashtekar
; Tommaso De Lorenzo
; Neev Khera
; | | Date: |
7 Oct 2019 | | Abstract: | In presence of gravitational radiation, the notion of angular momentum of an
isolated system acquires an infinite dimensional supertranslation ambiguity.
This fact has been emphasized in the mathematical general relativity literature
over several decades. We analyze the issue in the restricted context of compact
binary coalescence (CBC) where the initial total angular momentum of the binary
and the final black hole spin generically refer to emph{distinct} rotation
subgroups of the Bondi-Metzner-Sachs group, related by
emph{supertranslations}. We show that this ambiguity can be quantified using
gravitational memory and the ’black hole kick’. Our results imply that,
although the ambiguity is conceptually important, under assumptions normally
made in the CBC literature, it can be ignored in practice for the current and
foreseeable gravitational wave detectors. | | Source: | arXiv, 1910.2907 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER