方法对比
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| 旋转曲线分析× | 脉冲星计时阵列× | |
|---|---|---|
| 领域 | 天文学 | 天文学 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 1970 | 1979 |
| 提出者≠ | Vera Rubin | Stephen Detweiler |
| 类型≠ | Observational kinematic method | Observational timing method |
| 开创性文献≠ | Vera C. Rubin & W. Kent Ford Jr. (1970). Rotation of the Andromeda Nebula from a Spectroscopic Survey of Emission Regions. Astrophysical Journal, 159, 379-403. DOI ↗ | Sazhin, M. V. (1978). Opportunities for detecting ultralong gravitational waves. Soviet Astronomy, 22, 36-38. link ↗ |
| 别名 | Galactic Rotation Curves, Rotation Curve Method, Velocity Curve Analysis | PTA, Millisecond Pulsar Timing, Pulsar Timing Residuals |
| 相关 | 3 | 3 |
| 摘要≠ | Galaxy rotation curve analysis is the technique of measuring how orbital velocities change with distance from the center of a galaxy. Pioneered by Vera Rubin and W. Kent Ford Jr. in 1970, rotation curves revealed one of astronomy's great mysteries: galaxies rotate too fast to be held together by their visible stars alone, providing direct evidence for dark matter. | A pulsar timing array uses multiple millisecond pulsars as a distributed network of gravitational wave detectors across the galaxy. Proposed theoretically by Stephen Detweiler in 1979, this method exploits the extraordinary timing precision of pulsars to detect the subtle spacetime distortions caused by gravitational waves. In 2023, the first evidence for a stochastic background of gravitational waves was announced using pulsar timing arrays. |
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