Astronomical ZeV Acceleration in the relativistic jet from ......Microwave Cosmic Background ... 1st...
Transcript of Astronomical ZeV Acceleration in the relativistic jet from ......Microwave Cosmic Background ... 1st...
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Astronomical ZeV Acceleration in the relativistic jet from an accreting
supermassive blackholes
Toshikazu Ebisuzaki and Akira Mizuta (RIKEN)
Toshiki Tajima (UC Irvine)
UC Irvine February 6, 20172017/2/6
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Origin of Cosmic rays• 100 years enigma
– Discovered in 1912
by Victor Hess
galactic
Extra-galactic
UHECR
UC Irvine February 6, 20172017/2/6
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Conventional theory:Fermi mechanism
By Department of Energy. Office of Public AffairsE. Fermi, ApJ 119 (1954) 1. UC Irvine February 6, 20172017/2/6
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Difficulties of Fermi acceleration in UHECR~1020 eV
1. Bending is inevitable
→synchrotron loss
UC Irvine February 6, 20172017/2/6
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Fermi mechanism
Synchrotron radiation
Synchrotron radiation
Synchrotron radiation
Synchrotron radiationBy Department of Energy. Office of Public AffairsE. Fermi, ApJ 119 (1954) 1.
requires bending→synchrotron loss
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Difficulties of Fermi acceleration in UHECR
1. Bending is inevitable
→synchrotron loss
2. Confinement is difficult
→no acceleration
UC Irvine February 6, 20172017/2/6
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Theoretical Upper limit of Fermi mech.< 1020 eV
UC Irvine February 6, 20172017/2/6
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Difficulties of Fermi acceleration in UHECR
1. Bending is inevitable
→synchrotron loss
2. Confinement is difficult
→no acceleration
3. Escape problem
→magnetic field does not disappear without adiabatic loss
Wakefield acceleration
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Wake of a ship
UC Irvine February 6, 20172017/2/6
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Laser Wakefield
𝐸W~GeV/cmParticle acceleration
T. Tajima and J. M. Dawson (1979)
c
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Electron bunch by a single shot of laser beam
Leemans et al. (2006) Nature Physics, 2, 696. Nakamura et al. (2007) Phys. Plasma, 14, 056078
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Linear Acceleration with an Accreting Blackhole
• (Super-) massive blackholes– Central Engines of Active Galactic Nuclei:
• Radio Galaxies/Blazars: 108-109 solar mass• Seyfert Galaxies: ~106 solar mass
– Center of Milky Way G.: 4 × 106 solar mass BH
• Starburst Galaxies: – ~102-5 solar mass=Intermediate mass BH in young clusters– Ultra Luminous X-ray Sources
• Accretion disk: – Strong Alfven wave emitter
• Jet: – Relativistic Flow Γ=10-30
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Vir A=M87
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1AU
Γ=10~30
UC Irvine February 6, 20172017/2/6
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Eruption of magnetic field in an accretion disk
Tajima and Gilden 1987, ApJ 320, 741-745Haswell, Tajima, and Sakai, 1992, ApJ, 401, 495-507
A Burst of Torsional Alfven Waves
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Alfven Burst
• Rise time
𝜏A = 𝑍D/𝐶sD Ω/𝐴
• Recurrence time1/𝜈A = 𝑍D/(𝜂𝑉AD)
• Energy Flux in a burst
ΦAJ = ΦAD = 𝑉AD𝐵D2 /4𝜋
• Total energy of a burst
𝐸B = 𝐵D2 /4𝜋 𝜋 10𝑅g
2
UC Irvine February 6, 20172017/2/6
Estimated at 10𝑅g
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Accretion Disk around a BHm=108
~AU
a0=eE/mcωA=9.7x1010
EB=1.6x1048 erg
ωA=3.2x10-2 Hz
Accretion disk emits intense Alfven bursts
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𝜔A < 𝜔′pAlfven wave
𝜔A > 𝜔′pEM wave
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1D Particle-in-Cell simulationwith the code by Nagata2008
Lau et al. 2015, Phys. Rev. 18, 024401
𝑎0 = 0.4
𝑎0 = 2
𝑎0 = 60
𝑎0
𝑊max(𝑚
𝑒𝑐2)
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Acceleration by pondermotive force
A
D
camF
dDFzW
epm
0
pmmax
3
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ZeV Accelerator𝑚 = 108, ሶ𝑚 = 0.1, 𝛼 = 0.1
2𝜋/𝜔A 2.0 × 102 s
1/𝜈A 1.0 × 106 s
𝐷3/𝑐 1.2 × 109 s
𝑊max 2.9 × 1022 eV
𝐿tot 1.2 × 1045 erg s−1
𝐿A 1.2 × 1042 erg s−1
𝐿γ 1.2 × 1041 erg s−1
𝐿UHECR 1.2 × 1040 erg s−1
𝐿UHECR/𝐿tot 1.0 × 10−5
𝐿UHECR/𝐿γ 1.0 × 10−1
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Figure 3 from Spectral Properties of Bright Fermi-Detected Blazars in the Gamma-Ray BandA. A. Abdo et al. 2010 ApJ 710 1271 doi:10.1088/0004-637X/710/2/1271
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Conditions for UHECRs
𝐿tot = 1.3 × 1038𝑚 ሶ𝑚 erg s−1
Radio Galaxy
Seyfert Galaxy
Starburst Galaxy
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Wakefield/pondermotive acceleration
1. No bending: linear acceleration
→No synchrotron loss
2. No Confinement is necessary
→just push
3. No escape problem
→Wake will naturally disappear
4. Prediction: it must be gamma-ray sources
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Energy budget
• Total accretion energy 1.0
• Gravitational wave 0.01
• Radiation total 0.09
• Alfven wave 0.001
• Gamma-rays (electrons) 0.0001
• Cosmic rays total 0.0001
• UHECRs 0.00001
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Energy Flow and Spectra
wakefield
protons electrons
cosmic rays gamma rays1:1
UHECRs 0.1:1
F(W)∝W-2UC Irvine February 6, 20172017/2/6
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Nine nearby Fermi AGNsCounterpart
name LII BII Class Redshift
Flux1GeV-100 GeV
(erg cm-2 s-1)
Spectral
index
Radio
flux(mJy)
X Flux
(erg cm-2 s-1)
NGC 0253 97.39 -87.97Starburst
galaxy 0.001 (6.2+/-1.2) e-10 2.313 2994 6.02E-12
NGC 1068 172.1 -51.94Seyfert
galaxy0.00419 (5.1+/-1.1) e-10 2.146 4849 4.55E-11
For A 240.15 -56.7Radio
Galaxy 0.005 (5.3+/-1.2) e-10 2.158 255 2.38E-12
M 82 141.41 40.56Starburst
galaxy 0.001236 (10.2+/-1.3) e-10 2.28 6205 2.29E-11
M 87 283.78 74.48Radio
Galaxy 0.0036 (17.3+/-1.8) e-10 2.174 138488 6.30E-11
Cen A Core 309.51 19.41Radio
Galaxy0.00183(30.3+/-2.4) e-10 2.763 42000 9.00E-12
NGC 4945 305.27 13.33Seyfert
galaxy 0.002 (7.5+/-1.7) e-10 2.103 5776 2.36E-12
Cen B 309.72 1.72Radio
Galaxy 0.012916 (18.6+/-3.5) e-10 2.325 8890 8.83E-12
NGC 6814 29.35 -16.02Seyfert
galaxy0.0052 (6.8+/-1.6) e-10 2.544 52 1.56E-11
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Fermi gamma-ray galaxies (Nearby)
Ebisuzaki and Tajima 2014, Eur. Phys. J. Special Topics, 223, 1113-1120.
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Wakefield/pondermotive acceleration
1. No bending: linear accerelation
→No synchrotron loss
2. No Confinement is necessary
→just push
3. No escape problem
→Wake will naturally disappear
4. Prediction: it must be gamma-ray sources
5. How about coherence?YES
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Fermi gamma-ray galaxies (Nearby)
Ebisuzaki and Tajima 2014, Eur. Phys. J. Special Topics, 223, 1113-1120.
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Light Curves
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Energy Spectra
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Ground Based Observatories
Water tank SD FD telescope
507 surface detectors700 km2
1600 surface detectors3000 km2
FD telescopeScintillator SD
Auger TA
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Auger
TA
Arrival Direction Map (Auger/TA)
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TA Hot Spot: UHECRs from M82?
The most likely Source PositionAs a Result of Our Analysis.
M82 is very Close from the most likely Source Position!
Purple Lines are Source PositionsWith 1,2,3-sigma Errors.
M82
He, Kusenko, Nagataki + PRD 2016.
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M82 X-1 is promising
• 𝐹γM82 = 10.2 × 10−10erg s-1 cm-2 →
𝐿γM82X−1 = 1.3 × 1034 W
←10% of M82 total, d=3.2 Mpc
𝐿UHECRM82X−1 = 1.3 × 1033W
←𝐿UHECR
𝐿γ= 0.1
𝐹UHECRM82X−1~2 UHECRs/100km2/yr
~𝐹HotSpot
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proton
E = 1020 eV
2.7K CMB g
neutron
p+e+
m+ne
nm
protone-ne-
nm-
How about neutrinos?Greisen-Zatsepin-Kuz’min Process
Greisen1966; Zatsepin and Kuz’min1966
Microwave Cosmic Background
Radiation
Gamma Beam Energy (GeV)
Cro
ss S
ect
ion (m
b)
0.1
0.01
γ+ p→Δ(1232)→ πo p or π+ n
Gamma Beam Energy (GeV)
Cro
ss S
ect
ion (m
b)
0.1
0.01
γ+ p→Δ(1232)→ πo p or π+ n
Gamma Beam Energy (GeV)
Cro
ss S
ect
ion (m
b)
0.1
0.01
γ+ p→Δ(1232)→ πo p or π+ nγ+p→Δ→π0+p、π++n
2.725 K
410 photons / cm3
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Neutrino and gamma ray flux
Taken from Anchordoqui et al. 2014, Phys. Rev. D., 89, 127304and Yacobi et al. 2016, Ap. J., 823, 89, modified by TE
Engel et al 2001 (GZK neutrino)ΦUHECR ∝ 𝐸−2exp(−𝐸/1021.5eV)
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Accretion Disk around a BHm=108
~AUUC Irvine February 6, 20172017/2/6
Gravitational Wave?
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How about Gravitational wave ?
ℎ~5.5 × 10−21𝜖
0.01
𝑅
4Gpc
−1𝑚
2 × 103𝑀⨀
𝑚 < 7.0 × 10−10𝑀BH
106 𝑀⨀
2
Matsubayashi, Shinkai, and Ebisuzaki 2004, Ap. J, 614, 864-868
M87D=16.4 Mpc𝑀BH = 6.6 × 109 𝑀⨀
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Conclusions• Accreting BH+disk+jet = Astronomical Linear accelerator
– Bursts of Intense Alfven waves (highly relativistic)←Laser
– Jet ←wave guide
• Active Galactic Nuclei– Nearby gamma emitting AGNs
=ZeV acceleration of particles: UHECRs~1020 eV
• Intermediate Mass Blackholes (IMBH: 103-105 Ms) in M82– Possible origin of the Northern Hotspot by TA Group
• EeV-ZeV neutrinos: GZK process
• GW detection needs a large space antenna >>LISA
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Relativistic coherence
• Extremely relativistic
→freezing-out
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Origin of Cosmic rays• 100 years enigma
– Discovered in 1912
by Victor Hess
galactic
Extra-galactic
They loose original directions
because of magnetic field
Isotropic distribution
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Why CR>1020 eV?
Straight Line Astronomy
No bending vs bending
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𝜔A < 𝜔′pAlfven wave
𝜔A > 𝜔′pEM wave
Pondermotive Acc.
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1st Knee 2nd Knee
Ankle
HE flux suppression (GZK?)
ICRC 2011 : Beijing : JEM-EUSOGustavo Medina-Tanco – ICN-UNAM
Energy Spectrum
1018eV
Extragalactic
Galactic (Supernova remnant)
One per 100km2
per year
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Low Frequency Quasi Periodic Oscillation
3D Numerical Simulation of Accretion disk by O’Neil et al 2008
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Wakefield
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Proton accelerationPrenciple et al. (2016) Plasma Phys. Control. Fusion, 58, 034019
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Intermedeate Mass Blackholesin M82
• Ultra Luminous X-ray Sources
– Mass>1000 solar mass
• Near the center (not a just a center) of M82
– Star bursting galaxy
• Located in the young Star Cluster MGG11
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Magnetar with accretion
Light Cylinder
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3-D relativistic MHD simulation
A. Mizuta et al. 2016
𝛽 = 𝑃g/𝑃m
𝑃g 𝜌
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Comparison of IceCube event locations [4] with star-forming galaxies [21] and the ultrahigh energy cosmic ray hot spot
reported by the TA Collaboration
Anchordoqui et al. 2014, Phys. Rev. D., 89, 127304UC Irvine February 6, 20172017/2/6