1 / 19

TRENDS IN NICKEL & TITANIUM IN DUAL-SHOCK QUARK-NOVAE

The Quark-Nova Project: Talk III. TRENDS IN NICKEL & TITANIUM IN DUAL-SHOCK QUARK-NOVAE (ds-QNe). R. Ouyed U. Calgary. CONTENT & Collaborators. SN ejecta. Part A: QNe in isolation (r-process) (a very brief account). Part B:

abrial
Download Presentation

TRENDS IN NICKEL & TITANIUM IN DUAL-SHOCK QUARK-NOVAE

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. The Quark-Nova Project: Talk III TRENDS INNICKEL&TITANIUM IN DUAL-SHOCK QUARK-NOVAE (ds-QNe) R. Ouyed U. Calgary

  2. CONTENT & Collaborators SN ejecta Part A: QNe in isolation (r-process) (a very brief account) Part B: Dual-Shock QNe (ds-QNe) (56Ni & 44Ti) QN ejecta Part C: Predictions (CasA an Atypical case)

  3. JINA-connection Rapid expansion ~0.03 Solar pattern Slow expansion Very efficient at processing A > 130 elements !

  4. Part B:Dual-Shock QNe (ds-QNe) Depletion of 56Ni Formation of 44Ti

  5. SN-Ejecta/TARGET nucleons Heavies Collision between the QN-ejecta & SN-ejecta QN-Ejecta/PROJECTILE tdelay Nomoto et al. Nucl. Phys. A 2006 tdelay = 1 day

  6. Spallation Heavy-ion Collisions nucleons heavies

  7. 100 MeV 1 2 3 . . . . 1 GeV 1 2 3 . . . . 10 GeV . . . . . Nucleon @ SNS, about 30 neutrons by hitting 1GeV proton on a heavy nucleus (30 MeV/ejected nucleon roughly) Spallation: n + Ni SN-Ejecta Each free nucleon spallates 102-3 Ni nuclei

  8. 6 30 56 56-30=26 26Al, Si, Ph, S, … A30 Spallation Products

  9. 6 30 56 56-12=44 44Ti from 56Ni Spallation Fontes et al., Nuc. Phys. A, 71 Raisbeck & Yiuo, PRL, 71 …….. Neutron Energy

  10. Quark-Novae withtdelay~ few days Spallation: n + Ni + + A30

  11. AQN Ni Heavies Asystem= AQN+56 ~ 200 Heavy-ion collisions: AQN + Ni IMF: Intermediate Mass Fragments

  12. A30 < 1 day Ti Ni IMFs < 10 days AQN Heavies OBSERVABLES SN-QN Time Delay Short (< day) 56Ni-poor+44Ti-rich+A30-rich+IMF-rich Intermediate (1 < t < 10) 56Ni-normal+44Ti-poor+A30-poor+IMF-rich Long (> 10 days) 56Ni-rich + AQNHeavies-rich+IMF-poor REGIMES

  13. Entering the dragon’s den … Part C:Predictions (CasA an Atypical case)

  14. Woosley et al. Standard Picture: If 44Ti-rich then 56Ni-rich Issues with Supernovae and Titanium-44/Nickel-56 trends inferred from Cas A Is Cas A..

  15. If true Heavier NS + Rotation ds-QNe Cas A Issues with Supernovae and Titanium-44/Nickel-56 trends inferred from Cas A

  16. Quark-Nova Progenitors Type II b (3% type II) Suggestion: Type IIbs (SN1993J & Cas A) as dsQNe with short tdelay ! No need for companion! dsQN with tdelay < 1day! dsQNe < 10% type II /18

  17. Need Experiments Need Experiments QNe Naturally kinked to Mass-Function (thus toFe-dex) Chemical Evolution Venkatessan, Jaikumar & Ouyed QNe Progenitors (25 < M/Msun <60) [QNe rate 1/10 SNe] QNe Progenitors Short (< day) 56Ni-poor+44Ti-rich+A30-rich+IMF-rich Cas A: Predictions

  18. Need Experiments Need Experiments Thank you! quarknova.ucalgary.ca The Quark-Nova Project Short (< day) 56Ni-poor+44Ti-rich+A30-rich+IMF-rich

  19. Need Experiments Need Experiments Normal Visual Magnitude + High-v SN Short (< day) 56Ni-poor+44Ti-rich+A30-rich+IMF-rich Cas A: Predictions /18

More Related