منابع مشابه
Gravitational Lensing in Astronomy
Deflection of light by gravity was predicted by General Relativity and observationally confirmed in 1919. In the following decades, various aspects of the gravitational lens effect were explored theoretically. Among them were: the possibility of multiple or ring-like images of background sources, the use of lensing as a gravitational telescope on very faint and distant objects, and the possibil...
متن کاملGravitational Wave Astronomy *
The subject of gravitational wave astronomy has had a certain amount of controversy associated with it, but it is developing fairly rapidly. Indeed certain aspects of the field have reached an exciting stage, although they have not produced any real astronomical data yet and may not do so for some time. In some ways there have been quite basic changes in the overall character of the field in th...
متن کاملGravitational wave astronomy
The first decade of the new millennium should see the first direct detections of gravitational waves. This will be a milestone or fundamental physics and it will open the new observational science of gravitational wave astronomy. But gravitational waves already play an important role in the modeling of astrophysical systems. I review here the present state of gravitational radiation theory in r...
متن کاملGravitational wave astronomy and cosmology
The first direct observation of gravitational waves’ action upon matter has recently been reported by the BICEP2 experiment. Advanced ground-based gravitational-wave detectors are being installed. They will soon be commissioned, and then begin searches for high-frequency gravitational waves at a sensitivity level that is widely expected to reach events involving compact objects like stellar mas...
متن کاملLighthouses of Gravitational Wave Astronomy
Gravitational wave detectors capable of making astronomical observations could begin to operate within the next year, and over the next 10 years they will extend their reach out to cosmological distances, culminating in the space mission LISA. A prime target of these observatories will be binary systems, especially those whose orbits shrink measurably during an observation period. These systems...
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ژورنال
عنوان ژورنال: Nature
سال: 2008
ISSN: 0028-0836,1476-4687
DOI: 10.1038/457122a