论文标题
通过重力波的弱透镜测试扩展到$λ$ CDM的未来前景
Future prospects on testing extensions to $Λ$CDM through the weak lensing of gravitational waves
论文作者
论文摘要
With planned space-based and 3rd generation ground-based gravitational wave detectors (LISA, Einstein Telescope, Cosmic Explorer), and proposed DeciHz detectors (DECIGO, Big Bang Observer), it is timely to explore statistical cosmological tests that can be employed with the forthcoming plethora of data, $10^4-10^6$ mergers a year.我们预测标准警报器测量与二进制合并重力波的弱透镜的结合。在第三代探测器运行时10年，该联合分析将以边缘化的$1σ$不确定性为$σ（W_0）$ 〜0.005和$σ（W_A）$ 〜0.04的状态的暗能量方程。对于未来的星系/强度映射调查，这与预测相当或更好，并且在将这些和其他将来的探针与重力波结合在一起时，可以更好地约束。我们发现，与有或没有电磁对应物的合并相结合有助于打破参数变性。 Using DeciHz detectors in the post-LISA era, we demonstrate for the first time how merging binaries could achieve a precision on the sum of neutrino masses of $σ(Σm_ν)$~0.05 eV using $3\times10^6$ sources up to $z=3.5$ with a distance uncertainty of $1\%$, and ~percent or sub-percent precision also on curvature, dark energy, and other参数，独立于其他探针。最后，我们证明了如何利用合并红移分布中的宇宙学依赖性，以改善宇宙合并速率，而不是依靠宇宙学标准的测量分布。在接下来的几十年中，重力波将成为几何和大规模结构的强大探测。
With planned space-based and 3rd generation ground-based gravitational wave detectors (LISA, Einstein Telescope, Cosmic Explorer), and proposed DeciHz detectors (DECIGO, Big Bang Observer), it is timely to explore statistical cosmological tests that can be employed with the forthcoming plethora of data, $10^4-10^6$ mergers a year. We forecast the combination of the standard siren measurement with the weak lensing of gravitational waves from binary mergers. For 10 years of 3rd generation detector runtime, this joint analysis will constrain the dark energy equation of state with marginalised $1σ$ uncertainties of $σ(w_0)$~0.005 and $σ(w_a)$~0.04. This is comparable to or better than forecasts for future galaxy/intensity mapping surveys, and better constraints are possible when combining these and other future probes with gravitational waves. We find that combining mergers with and without an electromagnetic counterpart helps break parameter degeneracies. Using DeciHz detectors in the post-LISA era, we demonstrate for the first time how merging binaries could achieve a precision on the sum of neutrino masses of $σ(Σm_ν)$~0.05 eV using $3\times10^6$ sources up to $z=3.5$ with a distance uncertainty of $1\%$, and ~percent or sub-percent precision also on curvature, dark energy, and other parameters, independently from other probes. Finally, we demonstrate how the cosmology dependence in the redshift distribution of mergers can be exploited to improve dark energy constraints if the cosmic merger rate is known, instead of relying on measured distributions as is standard in cosmology. In the coming decades gravitational waves will become a formidable probe of both geometry and large scale structure.
