Abstract
We propose to employ the circular polarization of gravitational waves emitted by core-collapse supernovae as an unequivocal indication of rapid rotation deep in their cores just prior to collapse. It has been demonstrated by three dimensional simulations that nonaxisymmetric accretion flows may develop spontaneously via hydrodynamical instabilities in the postbounce cores. It is not surprising, then, that the gravitational waves emitted by such fluid motions are circularly polarized. We show, in this Letter, that a network of the second generation detectors of gravitational waves worldwide may be able to detect such polarizations up to the opposite side of the Galaxy as long as the rotation period of the core is shorter than a few seconds prior to collapse.
| Original language | English |
|---|---|
| Article number | 151102 |
| Journal | Physical Review Letters |
| Volume | 116 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2016 Apr 12 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Circular polarizations of gravitational waves from core-collapse supernovae : A clear indication of rapid rotation. / Hayama, Kazuhiro; Kuroda, Takami; Nakamura, Ko; Yamada, Shoichi.
In: Physical Review Letters, Vol. 116, No. 15, 151102, 12.04.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Circular polarizations of gravitational waves from core-collapse supernovae
T2 - A clear indication of rapid rotation
AU - Hayama, Kazuhiro
AU - Kuroda, Takami
AU - Nakamura, Ko
AU - Yamada, Shoichi
PY - 2016/4/12
Y1 - 2016/4/12
N2 - We propose to employ the circular polarization of gravitational waves emitted by core-collapse supernovae as an unequivocal indication of rapid rotation deep in their cores just prior to collapse. It has been demonstrated by three dimensional simulations that nonaxisymmetric accretion flows may develop spontaneously via hydrodynamical instabilities in the postbounce cores. It is not surprising, then, that the gravitational waves emitted by such fluid motions are circularly polarized. We show, in this Letter, that a network of the second generation detectors of gravitational waves worldwide may be able to detect such polarizations up to the opposite side of the Galaxy as long as the rotation period of the core is shorter than a few seconds prior to collapse.
AB - We propose to employ the circular polarization of gravitational waves emitted by core-collapse supernovae as an unequivocal indication of rapid rotation deep in their cores just prior to collapse. It has been demonstrated by three dimensional simulations that nonaxisymmetric accretion flows may develop spontaneously via hydrodynamical instabilities in the postbounce cores. It is not surprising, then, that the gravitational waves emitted by such fluid motions are circularly polarized. We show, in this Letter, that a network of the second generation detectors of gravitational waves worldwide may be able to detect such polarizations up to the opposite side of the Galaxy as long as the rotation period of the core is shorter than a few seconds prior to collapse.
UR - http://www.scopus.com/inward/record.url?scp=84963795966&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84963795966&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.116.151102
DO - 10.1103/PhysRevLett.116.151102
M3 - Article
AN - SCOPUS:84963795966
VL - 116
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 15
M1 - 151102
ER -