Alternative LISA-TAIJI networks

Abstract

The space-borne gravitational wave (GW) detectors, LISA and TAIJI, are planned to be launched in the 2030s. The dual detectors with comparable sensitivities will form a network observing GW with significant advantages. In this work, we investigate the three possible LISA-TAIJI networks for the different location and orientation compositions of LISA orbit ($+60^{\circ }$ inclination and trailing the Earth by $20^{\circ }$) and alternative TAIJI orbit configurations including TAIJIp ($+60^{\circ }$ inclination and leading the Earth by $20^{\circ }$), TAIJIc ($+60^{\circ }$ inclination and co-located with LISA), TAIJIm ($-60^{\circ }$ inclination and leading the Earth by $20^{\circ }$). In the three LISA-TAIJI configurations, the LISA-TAIJIm network shows the best performance on the sky localization and polarization determination for the massive binary system due to their better complementary antenna pattern, and LISA-TAIJIc could achieve the best cross-correlation and observe the stochastic GW background with an optimal sensitivity.

arXiv comment12 pages, 6 figures

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