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Direct observations of gravitational waves at frequencies around deci-Hertz will play a crucial role in fully exploiting the potential of multi-messenger astronomy. In this chapter, we discuss the detection landscape for the next several decades of the deci-Hertz gravitational-wave spectrum. We provide an overview of the experimental frontiers being considered to probe this challenging regime and the astrophysics and fundamental goals accessible towards them. This includes interferometric observatories in space with heliocentric and geocentric satellites, cubesats, lunar-based experiments and atom intereferometry. A major focus of this chapter is towards the technology behind DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) and its scientific pathfinder mission concept B-DECIGO.
The formation of compact stellar-mass binaries is a difficult, but interesting problem in astrophysics. There are two main formation channels: In the field via binary star evolution, or in dense stellar systems via dynamical interactions. The Laser I
Several km-scale gravitational-wave detectors have been constructed world wide. These instruments combine a number of advanced technologies to push the limits of precision length measurement. The core devices are laser interferometers of a new kind;
Gravitational wave (GW) detections have enriched our understanding of the universe. To date, all single-source GW events were found by interferometer-type detectors. We study a detection method using astrometric solutions from photometric surveys and
The detections of gravitational waves (GW) by LIGO/Virgo collaborations provide various possibilities to physics and astronomy. We are quite sure that GW observations will develop a lot both in precision and in number owing to the continuous works fo
Gravitational-wave astronomy has the potential to explore one of the deepest and most puzzling aspects of Einsteins theory: the existence of black holes. A plethora of ultracompact, horizonless objects have been proposed to arise in models inspired b