Charisi Maria, Taylor Stephen R, Witt Caitlin A, Runnoe Jessie
Department of Physics and Astronomy, Vanderbilt University, 2301 Vanderbilt Place, Nashville, Tennessee 37235, USA.
Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University, Evanston, Illinois 60208, USA.
Phys Rev Lett. 2024 Feb 9;132(6):061401. doi: 10.1103/PhysRevLett.132.061401.
Binary systems of supermassive black holes are promising sources of low-frequency gravitational waves (GWs) and bright electromagnetic emission. Pulsar timing array GW searches for individual binaries have been limited to only a few candidate systems due to computational demands, which get worse as more pulsars are added. By modeling the GW signal using only components from when the GW passes Earth (rather than also each pulsar), we find constraints on the binary's total mass and GW frequency that are similar to a full signal analysis, yet ∼70 times more efficient.
超大质量黑洞双星是低频引力波（GWs）和明亮电磁辐射的潜在来源。由于计算需求，脉冲星计时阵列对单个双星的引力波搜索仅限于少数候选系统，随着添加更多脉冲星，情况会变得更糟。通过仅使用引力波经过地球时的分量（而不是每个脉冲星）对引力波信号进行建模，我们发现对双星总质量和引力波频率的限制与完整信号分析相似，但效率提高了约70倍。
