Accelerating Tests of General Relativity with Gravitational-Wave Signals using Hybrid Sampling
Accelerating Tests of General Relativity with Gravitational-Wave Signals using Hybrid Sampling
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DOI：
10.1103/physrevd.107.104056
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发表时间：
2022-08
期刊：
影响因子：
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通讯作者：
Noah Wolfe;C. Talbot;J. Golomb
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作者：
Noah Wolfe;C. Talbot;J. Golomb
先进的LIGO/Virgo干涉仪已经观测到100次瞬态引力波，从而解答了有关相对论、天体物理学和宇宙学的新问题。然而，我们目前计算这些约束的许多程序将不能很好地适应未来瞬变星表规模的增加。为了更有效地利用引力波信号进行广义相对论的参数化检验，提出了一种新的混合采样方法。将我们的方法应用于双黑洞并合GW150914和模拟信号，我们发现我们的方法比目前保守设置的混合分析方法效率大约高一个数量级。虽然我们关注的是测量相对论潜在偏差的具体问题，但我们的方法更广泛地适用于任何可以分解为简单模型和更复杂模型的问题。
The Advanced LIGO/Virgo interferometers have observed $\sim 100$ gravitational-wave transients enabling new questions to be answered about relativity, astrophysics, and cosmology. However, many of our current procedures for computing these constraints will not scale well with the increased size of future transient catalogs. We introduce a novel hybrid sampling method in order to more efficiently perform parameterized tests of general relativity with gravitational-wave signals. Applying our method to the binary black hole merger GW150914 and simulated signals we find that our method is approximately an order of magnitude more efficient than the current method with conservative settings for our hybrid analysis. While we have focused on the specific problem of measuring potential deviations from relativity, our method is of much wider applicability to any problem that can be decomposed into a simple and more complex model(s).