Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Black Hole Ringing, Quasinormal Modes, and Light Rings   Modelling of gravitational waves from binary black hole inspiral has played
an important role in the recent observations of such signals. The late-stage
ringdown phase of the gravitational waveform is often associated with the null
particle orbit ("light ring") of the black hole spacetime. With simple models
we show that this link between the light ring and spacetime ringing is based
more on the history of specific models than on an actual constraining
relationship. We also show, in particular, that a better understanding of the
dissociation of the two may be relevant to the astrophysically interesting case
of rotating (Kerr) black holes.

11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org