什么是潮汐瓦解事件（TDE）？
What is a tidal disruption event (TDE)?
当恒星过于靠近超大质量黑洞会被潮汐力撕裂，部分物质旋入形成短暂耀发，TDE是研究沉睡黑洞和吸积物理的天然实验室。
When a star strays too close to a supermassive black hole it is torn apart by tides, and some matter spirals in to flare briefly; TDEs are natural labs for dormant black holes and accretion physics.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#潮汐瓦解 #黑洞 #吸积
凌星法和径向速度法测系外行星有什么不同？
How does the transit method differ from the radial-velocity method for finding exoplanets?
凌星法看恒星亮度是否被遮挡（测行星半径），径向速度法看恒星因行星引力产生的光谱周期性红蓝移（测行星质量），两者常配合使用。
The transit method watches for dimming by a planet's silhouette (measuring radius), while radial velocity tracks periodic red/blue shifts in stellar spectra from the planet's pull (measuring mass); they are often used together.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#凌星 #径向速度 #系外行星
什么是快速射电暴（FRB）？
What is a fast radio burst (FRB)?
快速射电暴是毫秒级的明亮射电闪，多数来自遥远星系、来源不明；部分会重复爆发，少数（如FRB 121102）被定位到特定星系。
A fast radio burst is a millisecond flash of bright radio light, mostly from distant galaxies with unknown origin; some repeat, and a few like FRB 121102 have been pinned to specific galaxies.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#快速射电暴 #射电 #重复暴
什么是微引力透镜，它如何找系外行星？
What is microlensing and how does it find exoplanets?
前景恒星及其行星偶然掠过背景恒星时，引力像透镜一样短暂增亮；行星会造成额外的小扰动，能在极远距发现类地质量行星。
When a foreground star and its planet chance to pass in front of a background star, gravity acts like a lens and briefly brightens it; the planet adds a small extra wiggle, revealing even Earth-mass planets at great distances.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#微引力透镜 #系外行星 #背景星