Alternative LISA-TAIJI networks: detectability of the isotropic stochastic gravitational wave background

Abstract

In previous work [1], three TAIJI orbital deployments have been proposed to compose alternative LISA-TAIJI networks, TAIJIm (leading the Earth by $20^{\circ }$ and $-60^{\circ }$ inclined with respect to ecliptic plane), TAIJIp (leading the Earth by $20^{\circ }$ and $+60^{\circ }$ inclined), TAIJIc (colocated and coplanar with LISA) with respect to the LISA mission (trailing the Earth by $20^{\circ }$ and $+60^{\circ }$ inclined). And the LISA-TAIJIm network has been identified as the most capable configuration for massive black hole binary observation. In this work, we examine the performance of three networks to the stochastic gravitational wave background (SGWB) especially for the comparison of two eligible configurations, LISA-TAIJIm and LISA-TAIJIp. This investigation shows that the detectability of LISA-TAIJIm is competitive with the LISA-TAIJIp network for some specific SGWB spectral shapes. And the capability of LISA-TAIJIm is also identical to LISA-TAIJIp to separate the SGWB components by determining the parameters of signals. Considering the performances on SGWB and massive black hole binaries observations, the TAIJIm could be recognized as an optimal option to fulfill joint observations with LISA.

16 pages, 9 figures, accepted for publication in PRD

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Cited by in corpus (5)

• Primordial Black Hole Formation in Starobinsky's Linear Potential Model
• Primordial Black Hole Formation in Non-Minimal Curvaton Scenario
• The stochastic gravitational wave background from close hyperbolic encounters of primordial black holes in dense clusters
• Charactering instrumental noises and stochastic gravitational wave signals from combined time-delay interferometry
• Stochastic gravitational wave background due to gravitational wave memory