trends in nickel & titanium in dual-shock quark-novae
DESCRIPTION
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: - PowerPoint PPT PresentationTRANSCRIPT
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TRENDS IN NICKEL & TITANIUM IN DUAL-SHOCK QUARK-NOVAE (ds-QNe)
The Quark-Nova Project: Talk III
R. OuyedU. Calgary
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QN ejecta
SN ejecta
Part A: QNe in isolation (r-process) (a very brief account)
Part B: Dual-Shock QNe (ds-QNe) (56Ni & 44Ti)
Part C: Predictions (CasA an Atypical case)
CONTENT & Collaborators
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Very efficient at processing A > 130 elements !
Rapid expansion
Slow expansion
Solar pattern ~0.03
JINA-connection
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Part B: Dual-Shock QNe (ds-QNe)
Depletion of 56Ni
Formation of 44Ti
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Collision between the QN-ejecta & SN-ejectaQN-Ejecta/PROJECTILE
nucleons Heavies
tdelay
tdelay = 1 day
SN-Ejecta/TARGET
Nomoto et al.Nucl. Phys. A 2006
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Spallation
Heavy-ion Collisions
nucleons
heavies
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SN-Ejecta
Each free nucleonspallates 102-3 Ni nuclei
.
.
.
.
.
123....
123....
10 GeV1 GeV
100 MeV
Nucleon
Spallation: n + Ni
@ SNS, about 30 neutrons by hitting 1GeV proton
on a heavy nucleus (30 MeV/ejected nucleon roughly)
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Spallation Products
6 5630
56-30=26
A30
26Al, Si, Ph, S, …
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6 5630
56-12=44
44Ti from 56Ni SpallationFontes et al., Nuc. Phys. A, 71Raisbeck & Yiuo, PRL, 71……..
NeutronEnergy
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Spallation: n + Ni
Quark-Novae with tdelay ~ few days
A30
+
+
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Heavies
Heavy-ion collisions: AQN + Ni
Accel. AGS SPS RHIC LHC
√s (GeV)
3-5 17 200 5500
sinel 21 33 42 60
NiAQN
Asystem= AQN+56 ~ 200
IMF: Intermediate Mass Fragments
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REGIMES
AQN
Heavies
< 10 days IMFs
Ni
< 1 day TiA30
Long (> 10 days) 56Ni-rich + AQNHeavies-rich +IMF-poor
Intermediate (1 < t < 10) 56Ni-normal+44Ti-poor +A30-poor +IMF-rich
Short (< day) 56Ni-poor+44Ti-rich+A30-rich+IMF-rich
OBSERVABLESSN-QN Time Delay
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Entering the dragon’s den …
Part C: Predictions
(CasA an Atypical case)
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Issues with Supernovae and Titanium-44/Nickel-56 trends inferred from Cas A
Typical ? Atypical ? => ccSNe must be rare, if we think we understand nucleosynthesis & mass cut(DRAGON improved our understanding)
=> Ti-44 producing SNe are rare, special. Model should explain high 44Ti, low 56Ni
Is Cas A..
Woosley et al.StandardPicture:
If 44Ti-rich then56Ni-rich
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Issues with Supernovae and Titanium-44/Nickel-56 trends inferred from Cas A
Heavier NS + Rotation
ds-QNe Cas A
If true
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Suggestion: Type IIbs (SN1993J & Cas A) as dsQNe with short tdelay !No need for companion!
dsQN with tdelay < 1day!
dsQNe < 10% type IIType II b (3% type II)
Quark-N
ova Progenitors
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Cas A: Predictions
Short (< day) 56Ni-poor+44Ti-rich+A30-rich+IMF-rich
Need Experiments
Need Experiments
QNe Progenitors(25 < M/Msun <60)[QNe rate 1/10 SNe]
QNeNaturally kinked to
Mass-Function(thus to Fe-dex)
Chemical EvolutionVenkatessan, Jaikumar & Ouyed
QN
e Progenitors
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Short (< day) 56Ni-poor+44Ti-rich+A30-rich+IMF-rich
Need Experiments
Need Experiments
Thank you! quarknova.ucalgary.ca The Quark-Nova Project
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Cas A: Predictions
Short (< day) 56Ni-poor+44Ti-rich+A30-rich+IMF-rich
NormalVisualMagnitude +High-v SN
Need Experiments
Need Experiments
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