TY - JOUR
T1 - Gravitational waves from axisymmetric, rotating stellar core collapse
AU - Ott, Christian D.
AU - Burrows, Adam
AU - Livne, Eli
AU - Walder, Rolf
PY - 2004/1/10
Y1 - 2004/1/10
N2 - We have carried out an extensive set of two-dimensional, axisymmetric, purely hydrodynamic calculations of rotational stellar core collapse with a realistic, finite-temperature nuclear equation of state and realistic massive star progenitor models. For each of the total number of 72 different simulations we performed, the gravitational wave signature was extracted via the quadrupole formula in the slow-motion, weak-field approximation. We investigate the consequences of variation in the initial ratio of rotational kinetic energy to gravitational potential energy and in the initial degree of differential rotation. Furthermore, we include in our model suite progenitors from recent evolutionary calculations that take into account the effects of rotation and magnetic torques. For each model, we calculate gravitational radiation waveforms, characteristic wave strain spectra, energy spectra, final rotational profiles, and total radiated energy. In addition, we compare our model signals with the anticipated sensitivities of the first- and second-generation LIGO detectors coming on line. We find that most of our models are detectable by LIGO from anywhere in the Milky Way.
AB - We have carried out an extensive set of two-dimensional, axisymmetric, purely hydrodynamic calculations of rotational stellar core collapse with a realistic, finite-temperature nuclear equation of state and realistic massive star progenitor models. For each of the total number of 72 different simulations we performed, the gravitational wave signature was extracted via the quadrupole formula in the slow-motion, weak-field approximation. We investigate the consequences of variation in the initial ratio of rotational kinetic energy to gravitational potential energy and in the initial degree of differential rotation. Furthermore, we include in our model suite progenitors from recent evolutionary calculations that take into account the effects of rotation and magnetic torques. For each model, we calculate gravitational radiation waveforms, characteristic wave strain spectra, energy spectra, final rotational profiles, and total radiated energy. In addition, we compare our model signals with the anticipated sensitivities of the first- and second-generation LIGO detectors coming on line. We find that most of our models are detectable by LIGO from anywhere in the Milky Way.
KW - Gravitational waves
KW - Stars: rotation
KW - Supernovae: general
UR - http://www.scopus.com/inward/record.url?scp=1842427527&partnerID=8YFLogxK
U2 - 10.1086/379822
DO - 10.1086/379822
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AN - SCOPUS:1842427527
SN - 0004-637X
VL - 600
SP - 834
EP - 864
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2 I
ER -