Ultra high energy cosmic rays: implications of Auger data for source spectra and chemical composition - INSPIRE

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Ultra high energy cosmic rays: implications of Auger data for source spectra and chemical composition

R. Aloisio
(
- Arcetri Observ. and
- GSSI, Aquila
)
,
V. Berezinsky
(
- GSSI, Aquila and
- Gran Sasso
)
,
P. Blasi
(
- Arcetri Observ. and
- GSSI, Aquila
)

Dec 28, 2013

21 pages

Published in:

JCAP 10 (2014) 020

Published: Oct 10, 2014

e-Print:

1312.7459 [astro-ph.HE]

DOI:

10.1088/1475-7516/2014/10/020

View in:

ADS Abstract Service

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Abstract: (IOP)

We use a kinetic-equation approach to describe the propagation of ultra high energy cosmic ray protons and nuclei and calculate the expected spectra and mass composition at the Earth for different assumptions on the source injection spectra and chemical abundances. When compared with the spectrum, the elongation rate X(max)(E) and dispersion σ(X(max)) as observed with the Pierre Auger Observatory, several important consequences can be drawn: a) the injection spectra of nuclei must be very hard, ~ E(-)(γ) with γ~ 1- 1.6, b) the maximum energy of nuclei of charge Z in the sources must be ~ 5Z× 10(18) eV, thereby not requiring acceleration to extremely high energies, c) the fit to the Auger spectrum can be obtained only at the price of adding an ad hoc light extragalactic component with a steep injection spectrum ~ E(-2.7)). In this sense, at the ankle EA≈ 5× 10(18) eV) all the components are of extragalactic origin, thereby suggesting that the transition from Galactic to extragalactic cosmic rays occurs below the ankle. Interestingly, the additional light extragalactic component postulated above compares well, in terms of spectrum and normalization, with the one recently measured by KASCADE-Grande.

Note:

18 pages, 12 eps figures, accepted for publication in JCAP

cosmic ray theory
cosmic ray experiments
cosmic rays detectors
injection: spectrum
cosmic radiation: UHE
cosmic radiation: detector
p: cosmic radiation
nucleus: charge
nucleus: energy

References(68)

Figures(17)

[1]

Propagation of galactic cosmic rays 44-51

V. Ptuskin

- Astropart.Phys. 39 (2012) 40

[2]

The Origin of Galactic Cosmic Rays

Pasquale Blasi
(
- Arcetri Observ. and
- Gran Sasso
)

- Astron.Astrophys.Rev. 21 (2013) 70
•
e-Print:
- 1311.7346
•
DOI:
- 10.1007/s00159-013-0070-7

[3]

Particle Acceleration at Astrophysical Shocks: A Theory of Cosmic Ray Origin

R. Blandford
(
- Caltech
)
,
D. Eichler
(
- Maryland U. and
- Ben Gurion U. of Negev
)

- Phys.Rept. 154 (1987) 1-75
•
DOI:
- 10.1016/0370-1573(87)90134-7

[4]

Nonlinear theory of diffusive acceleration of particles by shock waves

MA Malkov
(
- UC, San Diego
)
,
L O'C Drury

- Rept.Prog.Phys. 64 (2001) 4, 429-481
•
DOI:
- 10.1088/0034-4885/64/4/201

[5]

The contribution of supernova remnants to the galactic cosmic ray spectrum

- Astropart.Phys. 33 (2010) 160-168
•
e-Print:
- 0912.2964
•
DOI:
- 10.1016/j.astropartphys.2010.01.002

[6]

Intergalactic photon spectra from the far ir to the uv lyman limit for 0 < Z < 6 and the optical depth of the universe to high energy gamma-rays

Floyd W. Stecker
(
- NASA, Goddard and
- UCLA
)
,
M.A. Malkan
(
- UCLA
)
,
S.T. Scully
(
- James Madison U.
)

- Astrophys.J. 648 (2006) 774-783
•
e-Print:
- astro-ph/0510449
•
DOI:
- 10.1086/506188

[7]

Implications of cosmological gamma-ray absorption. 2. Modification of gamma-ray spectra

- Astron.Astrophys. 413 (2004) 807-815
•
e-Print:
- astro-ph/0309141
•
DOI:
- 10.1051/0004-6361:20031542

[8]

Extragalactic propagation of ultrahigh energy cosmic-rays

Denis Allard
(
- APC, Paris
)

- Astropart.Phys. 39-40 (2012) 33-43
•
e-Print:
- 1111.3290
•
DOI:
- 10.1016/j.astropartphys.2011.10.011

[9]

Analytic calculations of the spectra of ultra-high energy cosmic ray nuclei. I. The case of CMB radiation

R. Aloisio
(
- Arcetri Observ. and
- Gran Sasso
)
,
V. Berezinsky
(
- Gran Sasso
)
,
S. Grigorieva
(
- Moscow, INR
)

- Astropart.Phys. 41 (2013) 73-93
•
e-Print:
- 0802.4452
•
DOI:
- 10.1016/j.astropartphys.2012.07.010

[10]

Analytic calculations of the spectra of ultra high energy cosmic ray nuclei. II. The general case of background radiation

R. Aloisio
(
- Arcetri Observ. and
- Gran Sasso
)
,
V. Berezinsky
(
- Gran Sasso
)
,
S. Grigorieva
(
- Moscow, INR
)

- Astropart.Phys. 41 (2013) 94-107
•
e-Print:
- 1006.2484
•
DOI:
- 10.1016/j.astropartphys.2012.06.003

[11]

On astrophysical solution to ultrahigh-energy cosmic rays

V. Berezinsky
(
- Gran Sasso and
- Moscow, INR
)
,
A.Z. Gazizov
(
- Minsk, Inst. Phys.
)
,
S.I. Grigorieva
(
- Moscow, INR
)

- Phys.Rev.D 74 (2006) 043005
•
e-Print:
- hep-ph/0204357
•
DOI:
- 10.1103/PhysRevD.74.043005

[12]

A dip in the UHECR spectrum and the transition from galactic to extragalactic cosmic rays

et al.

- Astropart.Phys. 27 (2007) 76-91
•
e-Print:
- astro-ph/0608219
•
DOI:
- 10.1016/j.astropartphys.2006.09.004

[13]

End to the cosmic ray spectrum?

Kenneth Greisen
(
- Cornell U., LNS
)

- Phys.Rev.Lett. 16 (1966) 748-750
•
DOI:
- 10.1103/PhysRevLett.16.748

[14]

Upper limit of the spectrum of cosmic rays

G.T. Zatsepin
(
- Lebedev Inst.
)
,
V.A. Kuzmin
(
- Lebedev Inst.
)

- JETP Lett. 4 (1966) 78-80,
- Pisma Zh.Eksp.Teor.Fiz. 4 (1966) 114-117

[15]

A Bump in the ultrahigh-energy cosmic ray spectrum

- Astron.Astrophys. 199 (1988) 1-12

[16]

Measurement of the flux of ultrahigh energy cosmic rays from monocular observations by the High Resolution Fly's Eye experiment

HiRes

Collaboration

•

R.U. Abbasi

et al.

- Phys.Rev.Lett. 92 (2004) 151101
•
e-Print:
- astro-ph/0208243
•
DOI:
- 10.1103/PhysRevLett.92.151101

[17]

First observation of the Greisen-Zatsepin-Kuzmin suppression

HiRes

Collaboration

•

R.U. Abbasi
(
- Utah U.
)

et al.

- Phys.Rev.Lett. 100 (2008) 101101
•
e-Print:
- astro-ph/0703099
•
DOI:
- 10.1103/PhysRevLett.100.101101

[18]

Cosmic Ray in the Northern Hemisphere: Results from the Telescope Array Experiment

Telescope Array

Collaboration

•

Charles C.H. Jui

for the collaboration.

- J.Phys.Conf.Ser. 404 (2012) 012037
•
e-Print:
- 1110.0133
•
DOI:
- 10.1088/1742-6596/404/1/012037

[19]

Highlights from Telescope Array

Telescope Array

Collaboration

•

Yoshiki Tsunesada
(
- Tokyo Inst. Tech.
)

for the collaboration.

•
e-Print:
- 1111.2507
•
DOI:
- 10.7529/ICRC2011/V12/H05

[20]

Measurement of the Depth of Maximum of Extensive Air Showers above $10^{18}$ eV

Pierre Auger

Collaboration

•

J. Abraham
(
- Buenos Aires, CONICET
)

et al.

- Phys.Rev.Lett. 104 (2010) 091101
•
e-Print:
- 1002.0699
•
DOI:
- 10.1103/PhysRevLett.104.091101

[21]

Mass Composition Working Group Report at UHECR-2012

Pierre Auger and
Yakutsk

Collaborations

•

E. Barcikowski
(
- Utah U.
)

et al.

- EPJ Web Conf. 53 (2013) 01006
•
e-Print:
- 1306.4430
•
DOI:
- 10.1051/epjconf/20135301006

[22]

Kneelike structure in the spectrum of the heavy component of cosmic rays observed with KASCADE-Grande

KASCADE Grande

Collaboration

•

W.D. Apel
(
- KIT, Karlsruhe
)

et al.

- Phys.Rev.Lett. 107 (2011) 171104
•
e-Print:
- 1107.5885
•
DOI:
- 10.1103/PhysRevLett.107.171104

[23]

Ankle-like Feature in the Energy Spectrum of Light Elements of Cosmic Rays Observed with KASCADE-Grande

et al.

- Phys.Rev.D 87 (2013) 081101
•
e-Print:
- 1304.7114
•
DOI:
- 10.1103/PhysRevD.87.081101

[24]

Measurement of the cosmic ray energy spectrum with IceTop-73

IceCube

Collaboration

•

M.G. Aartsen
(
- Adelaide U.
)

et al.

- Phys.Rev.D 88 (2013) 4, 042004
•
e-Print:
- 1307.3795
•
DOI:
- 10.1103/PhysRevD.88.042004

[25]

Ultrahigh-Energy Cosmic Rays: Results and Prospects

Karl-Heinz Kampert
(
- Wuppertal U.
)

- Braz.J.Phys. 43 (2013) 375-382
•
e-Print:
- 1305.2363
•
DOI:
- 10.1007/s13538-013-0150-1

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