تقرير
Measurement of sub-dominant harmonic modes for gravitational wave emission from a population of binary black holes
| العنوان: | Measurement of sub-dominant harmonic modes for gravitational wave emission from a population of binary black holes |
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| المؤلفون: | O'Brien, Brendan D., Costa, Carlos F. Da Silva, Klimenko, Sergey |
| سنة النشر: | 2019 |
| المجموعة: | General Relativity and Quantum Cosmology |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology |
| الوصف: | Measurements of multiple harmonic modes in the gravitational wave signals from binary black hole events could provide an accurate test of general relativity, however they have never been observed before. The sub-dominant modes, other than the main (l = 2, m = 2) mode, are weak in amplitude and thus difficult to detect in a single event at the current sensitivity of the gravitational wave detectors. To recover sub-dominant modes, we propose an unmodeled method for summation of signals from a population of binary black holes. The method coherently stacks all the signal modes, effectively increasing their signal-to-noise ratio, so the amplified signal can be extracted from the noisy data. To test the method, we consider simulated numerical relativity waveforms including sub-dominant modes up to (5, 5). We inject simulated signals from a population of binary black holes into data from the first observing run of Advanced LIGO and utilize the coherent WaveBurst algorithm for signal detection and reconstruction. Using only the waveforms reconstructed by coherent WaveBurst, i.e., no a priori information about the signal model, we determine the transformation to coherently synchronize the merger and post-merger of one signal to another. We demonstrate the synchronization of the injected signals and show the efficient stacking of the (2, 2) mode and the sub-dominant modes. Comment: 8 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1901.09072 |
| رقم الأكسشن: | edsarx.1901.09072 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |