Gravitational waves or ripples captured by space detector
Q. Gravitational waves or ripples in space time captured by space detectors could be used to discover how some of the universe’s largest black holes were born, as part of which project?- Published on 28 Jun 16a. eLISA
b. EAGLE
c. SWAN
d. RAVEN
ANSWER: EAGLE
The gravitational waves or ripples in space time captured by space detectors can be used for discovering when and how some of the largest black holes in the universe were born
- Scientists led by Durham University researchers ran the huge cosmological simulations used to predict the rate at which gravitational waves caused by collisions between monster black holes might be detected
- Amplitude and frequency of these waves could unveil the initial mass of the seeds from which black holes first grew since they were formed 13 billion years ago and provide further clues about the nature of their causation and formation
- Study combined simulations from the EAGLE project to create realistic simulation of the known universe within the computer to compute gravitational wave signals
- Two detections of gravitational wavs cause by collisions between supermassive black holes should be easy each year using space based instruments such as Evolved Laser Interferometer Space Antenna (eLISA) detector due to launch in 2034
- International LIGO and Virgo collaborations have indicated they have detected gravitational waves using ground based instruments and this month reported a second detection
- As eLISA will be in space- and at least 250,000 times larger than Earth detectors- it should detect much lower frequency gravitational waves using ground based instruments and a second detection has been reported.
- Seeds of black holes were the result of growth or collapse of first generation of stars un the universe, collisions between stars in dense stellar clusters or direct collapse of extremely massive stars in the early universe
