UHECR propagation from Centaurus A

Sarka Wykes; Andrew M. Taylor; Justin D. Bray; Martin J. Hardcastle; Michael Hillas

doi:10.1016/j.nuclphysbps.2018.07.033

UHECR propagation from Centaurus A

Sarka Wykes, Andrew M. Taylor, Justin D. Bray, Martin J. Hardcastle, Michael Hillas

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2 Citations (Scopus)

Abstract

In the light of the recently predicted isotopic composition of the kpc-scale jet in Centaurus A, we re-investigate whether this source could be responsible for some of the ultra-high energy cosmic rays detected by the Pierre Auger Observatory. We find that a nearby source like Centaurus A is well motivated by the composition and spectral shape, and that such sources should start to dominate the flux above ~ 4 EeV. The best-fitting isotopes from our modelling, with the maximum 56Fe energy fixed at 250 EeV, are of intermediate mass, 12C to 16O, while the best-fitting particle index is 2.3.

Original language	English
Pages (from-to)	234-241
Number of pages	8
Journal	Nuclear and Particle Physics Proceedings
Volume	297–299
DOIs	https://doi.org/10.1016/j.nuclphysbps.2018.07.033
Publication status	E-pub ahead of print - 20 Oct 2018

Keywords

astro-ph.HE

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title = "UHECR propagation from Centaurus A",

abstract = " In the light of the recently predicted isotopic composition of the kpc-scale jet in Centaurus A, we re-investigate whether this source could be responsible for some of the ultra-high energy cosmic rays detected by the Pierre Auger Observatory. We find that a nearby source like Centaurus A is well motivated by the composition and spectral shape, and that such sources should start to dominate the flux above ~ 4 EeV. The best-fitting isotopes from our modelling, with the maximum 56Fe energy fixed at 250 EeV, are of intermediate mass, 12C to 16O, while the best-fitting particle index is 2.3. ",

keywords = "astro-ph.HE",

author = "Sarka Wykes and Taylor, {Andrew M.} and Bray, {Justin D.} and Hardcastle, {Martin J.} and Michael Hillas",

note = "{\textcopyright} 2018 Published by Elsevier B.V. ",

year = "2018",

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day = "20",

doi = "10.1016/j.nuclphysbps.2018.07.033",

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journal = "Nuclear and Particle Physics Proceedings",

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TY - JOUR

T1 - UHECR propagation from Centaurus A

AU - Wykes, Sarka

AU - Taylor, Andrew M.

AU - Bray, Justin D.

AU - Hardcastle, Martin J.

AU - Hillas, Michael

PY - 2018/10/20

Y1 - 2018/10/20

N2 - In the light of the recently predicted isotopic composition of the kpc-scale jet in Centaurus A, we re-investigate whether this source could be responsible for some of the ultra-high energy cosmic rays detected by the Pierre Auger Observatory. We find that a nearby source like Centaurus A is well motivated by the composition and spectral shape, and that such sources should start to dominate the flux above ~ 4 EeV. The best-fitting isotopes from our modelling, with the maximum 56Fe energy fixed at 250 EeV, are of intermediate mass, 12C to 16O, while the best-fitting particle index is 2.3.

AB - In the light of the recently predicted isotopic composition of the kpc-scale jet in Centaurus A, we re-investigate whether this source could be responsible for some of the ultra-high energy cosmic rays detected by the Pierre Auger Observatory. We find that a nearby source like Centaurus A is well motivated by the composition and spectral shape, and that such sources should start to dominate the flux above ~ 4 EeV. The best-fitting isotopes from our modelling, with the maximum 56Fe energy fixed at 250 EeV, are of intermediate mass, 12C to 16O, while the best-fitting particle index is 2.3.

KW - astro-ph.HE

U2 - 10.1016/j.nuclphysbps.2018.07.033

DO - 10.1016/j.nuclphysbps.2018.07.033

M3 - Article

SN - 2405-6014

VL - 297–299

SP - 234

EP - 241

JO - Nuclear and Particle Physics Proceedings

JF - Nuclear and Particle Physics Proceedings

ER -

UHECR propagation from Centaurus A

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Keywords

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