1 / 20

DARK MATTER PROBES OF SUPERMASSIVE BLACK HOLE S

DARK MATTER PROBES OF SUPERMASSIVE BLACK HOLE S. HotSci 23 July 2014. Joe Silk (IAP, JHU). SMBH binaries in quasars may be common a t parsec scales, from Balmer line offsets. Liu e al 2013. Benson 2014. Stuck at the final parsec…. Mpc. Inoue + 2013.

rhonda-schwartz
Télécharger la présentation

DARK MATTER PROBES OF SUPERMASSIVE BLACK HOLE S

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. DARK MATTER PROBES OF SUPERMASSIVE BLACK HOLES HotSci 23 July 2014 Joe Silk (IAP, JHU)

  2. SMBH binaries in quasars may be common at parsec scales, from Balmerline offsets Liu e al 2013

  3. Benson 2014 Stuck at the final parsec… Mpc

  4. Inoue + 2013 Intermediate mass BH 103-106Msun Two baryon problems: Too big to fail dwarfs & low baryon fraction in massive galaxies IMBH EXPEL BARYONS

  5. Duc + 2013 Dubois+ 2013 Baryon fraction fraction supernovae IMBH predicted hosts, not observed Peirani + 2012 Boylan-Kirchin et al. 2011

  6. <v> mx Density profile Plateau: nx(r)<sv> tBH ~ 1 Gondolo + JS 1999, Gnedin & Primack 2004, Sadeghian, Ferrer + Will 2013

  7. Does cusp survive? MAYBE! Vasiliev & Zelnikov 2008 tr (GC,M31)~3Gyr ~tr ~3tr but SMBH at GC grows over 1 Gyr & tr (M87 SMBH)~105Gyr!

  8. NEAR BINARY BLACK HOLES

  9. Kozai mechanism drives resonant infall of DM in eccentric orbits………operates for binary black hole Naoz and Silk 2014

  10. Naoz and Silk 2014 Dark matter torus forms

  11. supermassive black hole at Galactic Center HESS J1745-290 prediction for CTA: superexponential signature of TeV DM annihilations 30-300 GeV the near future Belikov & JS 2013 Vaiana + 2014

  12. NEARBY AGN M87 is an attractive target Distance 2000 x GC but MBH 1000 x SagA* Flux ~ nx2<sv> (2rp)3 ~ MBH3/<sv> for low <sv> nx(rp)<sv> tBH ~ 1 Dynamical heating of spike ~ 1014yrvs 109yr(GC)

  13. relativistic jets emanate from ergosphere, so high energy e,p collide with DM spike particles! Gomez et al 2013 Gorchtein et al 2010 M87 CenA

  14. EXTRAGALACTIC GAMMA RAY BACKGROUND EXTRACALACTIC DIFFUSE g RAY BACKGROUND There is room for an exotic component from dark matter

  15. 0.1 TeV 1 TeV Annihilations In dark matter spikes around supermassive black holes 10 TeV NFW Belikov & Silk 2013

  16. BLACK HOLES THE ULTIMATE PARTICLE ACCELERATOR: dark matter cusp around black hole particle horizon maximum 4.5 m Schwarzschild

  17. NEAR KERR BLACK HOLES ergosphere Penrose process

  18. Rotating black hole can feed Penrose effect via DM particle collisions Kerr black hole no maximum for extremal Kerr! near event-horizon particle collisions of KK particles: excitations Banados, West, JS 2009 particle horizon rS=2GM/c2 Highly controversial…but the dust hasn’t settled yet! Arina, Bringmann, Vollmann, JS 2014

  19. Black hole shadow Event Horizon Telescope Simulated image at 1mm of M87 or SagA* black hole Resolve horizon scale GM/c2 at ~5 marcsec M87 distance 2000 x GC but MBH 1000 x SagA* Huang + 2007

More Related