힐스 메커니즘

Hills mechanism

힐스 메커니즘은[1] 초거대 블랙홀에 의해 이진성 항성계가 붕괴될 때 발생하는 현상이다.null

블랙홀의 조석력은 별들 중 하나를 블랙홀에 포착하게 하고, 블랙홀 주위의 궤도에 떨어지게 한다.다른 별은 매우 빠른 속도로 블랙홀로부터 던져진다.이 현상은 1988년 천문학자 잭 힐스가 제안해 2019년 확정한 것으로, 이 같은 분사된 별의 예가 관측됐다.[2]이ejected 스타, 즉 S5-HVS1 A형 주계열성, 가장 빠른 스타 11월 2019년의로로 유명하고, 거의 4백만마일(더 구체적으로,에는 1,755명 올 km/s(3,930,000 mph)에 여행할 것, 결정된다. 빛의 속도는 은하수의 은하의 중심에서 거의 0.6%이다.[3][4][5][6][7][8][9][10][11]null

참조

  1. ^ Hills, J. G (25 February 1988). "Hyper-velocity and tidal stars from binaries disrupted by a massive Galactic black hole". Nature. 331 (6158): 687–689. Bibcode:1988Natur.331..687H. doi:10.1038/331687a0.
  2. ^ Gohd, Chelsea (November 13, 2019). "A Star Ejected from the Milky Way's 'Heart of Darkness' Has Reached a Mind-Blowing Speed". Space.com. Space.com. Retrieved November 14, 2019.
  3. ^ Overbye, Dennis (14 November 2019). "A Black Hole Threw a Star Out of the Milky Way Galaxy - So long, S5-HVS1, we hardly knew you". The New York Times. Retrieved 18 November 2019.
  4. ^ Koposov, Sergey E.; et al. (11 November 2019). "Discovery of a nearby 1700 km/s star ejected from the Milky Way by Sgr A*". Monthly Notices of the Royal Astronomical Society. arXiv:1907.11725. doi:10.1093/mnras/stz3081.
  5. ^ Starr, Michelle (31 July 2019). "Bizarre Star Found Hurtling Out of Our Galaxy Centre Is Fastest of Its Kind Ever Seen". ScienceAlert.com. Retrieved 18 November 2019.
  6. ^ Irving, Michael (13 November 2019). "Fastest star ever found is being flicked out of the Milky Way". NewAtlas.com. Retrieved 18 November 2019.
  7. ^ Imster, Imster (18 November 2019). "Black hole hurls star out of Milky Way - Astronomers have spotted a star – S5-HVs1 – speeding out of the Milky Way at around 4 million miles (more than 6 million km) per hour. They believe it's being ejected from our galaxy after venturing too near the giant black hole at the Milky Way's heart about 5 million years ago". Earth & Sky. Retrieved 18 November 2019.
  8. ^ Gohd, Chelsea (12 November 2019). "A Star Ejected from the Milky Way's 'Heart of Darkness' Has Reached a Mind-Blowing Speed - It is a visitor from a strange land". Space.com. Retrieved 18 November 2019.
  9. ^ Staff (15 November 2019). "A Runaway Star Ejected from the Galactic Heart of Darkness". Carnegie-Mellon University. Retrieved 18 November 2019.
  10. ^ Lincoln, Don (13 November 2019). "Supermassive Black Hole Ejects Star From Milky Way Galaxy". Forbes. Retrieved 18 November 2019.
  11. ^ Plait, Phil (13 November 2019). "Our Local Supermassive Black Hole Shot A Star Right Out Of THe Galaxy". Bad Astronomy. Retrieved 19 November 2019.


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