1 / 23

Hypernovae and Black Holes

Hypernovae and Black Holes. End of Life? or. Beginning of New Life?. 이창환 ( 서울대학교 ). Final Conclusion will be. Believe or Not. We have seen 15 black hole binaries in our Galaxy. We have seen evidences of Hypernovae explosions in black hole binaries

graceland
Download Presentation

Hypernovae and Black Holes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hypernovae and Black Holes End of Life? or Beginning of New Life? 이창환 (서울대학교)

  2. Final Conclusionwill be Believe or Not • We have seen 15 black hole binaries in our Galaxy. • We have seen evidences of Hypernovae explosions in black hole binaries • Ironically, Black Holes are the sources of the most energetic explosions in the Universe after Big Bang

  3. Compact Stars • White Dwarf [M < 1.4 Msun; R=1000 km] • Neutron Star [M < 3 Msun; R < 15 km] • Black Holes Density of Neutron Star 1 cm3 All buildings in Seoul

  4. What is Theoretical Black Hole? Einstein’s General Relativity Sun : r = 3 km Earch : r = 9 mm Light cannot escape ! Total Nonsense !?

  5. How light is generated near black hole ? Soueces of Strong X-ray in the Universe Radiation from accreting material Theoretical Candidates • Neutron Stars [M < 3 MSun; R <15 km] • Black Holes • … …

  6. Now Scientists believe that black hole exists ! X-ray Observations • First Observation 1962 • First X-ray SatelliteUhuru (Dec. 1970) • .. • Current MissionsChandra (NASA) XMM-Newton (Europe) • Future Xeus (ESA), Constellation-X(NASA), etc Chandra (NASA)

  7. What is black hole in real observation ? • Strong souce of X-ray emission • X-ray emission region is very small • No stable star exists with given mass & size Beyond Neutron Star We call it a Black Hole !

  8. Black Hole Binaries in our Galaxy Galactic Disk XTE J1118+480 Explosions from black holes ?

  9. X-ray & Optical Telescopes Oscillating Brightness (GRO J1655-40)

  10. 15 Black Hole Binaries observed > 3000 active black hole binaries in our Galaxy

  11. m=2Msun ; MBH=6Msun Nova Sco 94 [Xi/H]: logarithmic abundances relative to solar Israelial et al. 1999, Nature It’s impossible for normal stars! Where did they come from?

  12. Abundances in the secondary of Nova Sco They had to come from black hole progenitor when it exploded. Hypernova to explain the observations. [Hypernova=1031 Atomic Bomb at Hiroshima]

  13. Another evidence ? C.M. System velocity (-106 km/s) : Abrupt Mass Loss by Explosion Mg,Si,S,…

  14. Hypernova Explosions from Rotating BH Spinning BH (QPOs) High Black Hole Mass ( > 5 Msun) --- Maximum Neutron Star Mass < 3 Msun

  15. 1. From where ? 태양의 1-2배 태양의 20-30배 질량

  16. 2. How to form ? 공전주기 < 12시간 외부 팽창, 내부 수축

  17. Hypernovae 3. How to extract energy ? 블랙홀 자전 초당 1만번 Accretion Disk

  18. Rotating black hole is not so greedy! Falling material can survive! Supernovae Hypernovae New Life !

  19. Hypernovae in BH X-ray Binaries We have seen it twice. So, it happens Everywhere? Nova Sco, V4641 Sgr

  20. Hypernovae in BH X-ray Binaries Hypernovae ApJ, in press

  21. 동아일보 4월 24일

  22. Final Conclusion • We have seen 15 black hole binaries in our Galaxy. • We have seen evidences of hypernovae. Ironically, Black Holes are the sources of the most energetic explosions in the Universe after Big Bang If you believe, you will see the BHs ! Blessed are those who believe !

  23. Why am I doing this ? It’s a lot of fun ! Thanks for your attendance !

More Related