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Speaker |
Shinkai, Hisa-aki |
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| Talk Title |
Autoregressive Approach to Extract Ring-down Gravitational Wave of Black-hole Merger |
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Abstract |
We apply an autoregressive (AR) model for identifying the ring-down part of gravitational wave of binary black-hole mergers. This approach enables us to extract signals without templates, and is effective for short-period data. We obtain the ring-down frequency of the remnant black-hole of GW150914 as $305.94^{+18.68}_{-27.82}$ Hz (Hanford) and $300.02^{+17.49}_{-27.21}$ Hz (Livingston), and the damping frequency of it as $43.55^{+13.00}_{-17.99}$ Hz (Hanford) and $44.94^{+12.88}_{-18.30}$ Hz (Livingston). These results indicate the mass and spin of the black-hole, both of which are consistent with the values reported originally. |
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