Abstract
Remarkable progress has been made during recent years on the development of gravitational wave detectors. The review describes the present status and future prospectus of the gravitational wave astronomy. The main theme is to review the prominent long baseline detectors in operation around the world and proposed baseline and space-borne interferometers. Looking to the future, the major upgrades to the ground based detectors and new planned detectors will be completed over the coming years, which will create a network of detectors with the significantly improved sensitivity required to detect gravitational waves. Beyond this, the concept and design of possible future “third generation” gravitational-wave detectors will be discussed. Sources such as coalescing compact binary systems, neutron stars in low-mass X-ray binaries, stellar collapses and pulsars are all possible candidates for detection.
Highlights
Gravitational radiation is a central and exotic prediction of general theory relativity proposed by Einstein and its detection is a key test of integrity of his work
After this it was deemed more valuable for GEO600 to continue more noise hunting and commissioning work, to give as good sensitivity as possible for when the Laser Interferometer gravitational wave observatory (LIGO) detectors went offline for upgrading
The current configuration would consist of three Laser Interferometer Space Antenna (LISA)-like constellations of three spacecraft each, with 50 000 km arm lengths, and separated in their orbit by 120 ̊. The launch of this mission would be after DECI-Hertz Interferometer gravitational waves observatory (DECIGO).ASTROD-GW (Astrodynamical space test of Relativity using optical devices optimized of GW detection) is another space based gravitational wave interferometric mission [67]
Summary
Gravitational radiation is a central and exotic prediction of general theory relativity proposed by Einstein and its detection is a key test of integrity of his work. General theory of relativity predicts gravitational waves as freely propagating “ripples” in space time and manifests themselves as fluctuating tidal forces on masses in the path of the wave like other waves Their detection is primarily an experimental science, consisting of the development of the necessary ultra-sensitive measurement techniques. General relativity predicts an orbital decay rate due to gravitational wave emission of (2.715 ± 0.002) × 10−9 per year This agreement is a most impressive and beautiful conformation of the theory and provides strong evidence for the existence of gravitational waves. Orbital decay of PSR 1913 + 16 binary pulsar systems, from Data points represent the cumulative shift of periastron time measured whereas the parabola curve shows the same quantity predicted by the General Relativity. This paper is a review of present status and future prospectus of gravitational waves
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