Is the Ultra-High Energy Cosmic-Ray Excess Observed by the Telescope Array Correlated With Icecube Neutrinos?

Fang, Ke; Fujii, Toshihiro; Linden, Tim; Olinto, Angela V.

doi:10.1088/0004-637x/794/2/126

Cited by 39 publications

(35 citation statements)

References 50 publications

(45 reference statements)

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“…An alternative method to search for UHECR sources are correlation studies. Several studies have shown that the distribution of the TA hotspot events is consistent with the hypothesis of a single source, the nearby starburst galaxy M82 being a promising candidate [371,372]. The recent analysis [370] of the PAO data showed evidence for a correlation of the arrival directions of UHECRs with starburst galaxies, i.e.…”

Section: Anisotropiesmentioning

confidence: 52%

Cosmic ray models

Kachelrieß

Semikoz

2019

Progress in Particle and Nuclear Physics

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We review progress in high-energy cosmic ray physics focusing on recent experimental results and models developed for their interpretation. Emphasis is put on the propagation of charged cosmic rays, covering the whole range from ∼ (20 − 50) GV, i.e. the rigidity when solar modulations can be neglected, up to the highest energies observed. We discuss models aiming to explain the anomalies in Galactic cosmic rays, the knee, and the transition from Galactic to extragalactic cosmic rays.

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Section: Anisotropiesmentioning

confidence: 52%

Cosmic ray models

Kachelrieß

Semikoz

2019

Progress in Particle and Nuclear Physics

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“…The remaining half are at higher Galactic latitude. Hence both Galactic (e.g., Fox, Kashiyama, & Mészarós 2013;Taylor, Gabici, & Aharonian 2014) as well as extragalactic (e.g., Murase, Inoue, & Dermer 2014;Fang et al 2014) scenarios provide valid explanations for the IceCube detections.…”

Section: Introductionmentioning

confidence: 97%

Are both BL Lacs and pulsar wind nebulae the astrophysical counterparts of IceCube neutrino events?

Padovani

Resconi

2014

Monthly Notices of the Royal Astronomical Society

137

142

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IceCube has recently reported the discovery of high-energy neutrinos of astrophysical origin, opening up the PeV (10 15 eV) sky. Because of their large positional uncertainties, these events have not yet been associated to any astrophysical source. We have found plausible astronomical counterparts in the GeV -TeV bands by looking for sources in the available large area high-energy γ-ray catalogues within the error circles of the IceCube events. We then built the spectral energy distribution of these sources and compared it with the energy and flux of the corresponding neutrino. Likely counterparts include mostly BL Lacs and two Galactic pulsar wind nebulae. On the one hand many objects, including the starburst galaxy NGC 253 and Centaurus A, despite being spatially coincident with neutrino events, are too weak to be reconciled with the neutrino flux. On the other hand, various GeV powerful objects cannot be assessed as possible counterparts due to their lack of TeV data. The definitive association between high-energy astrophysical neutrinos and our candidates will be significantly helped by new TeV observations but will be confirmed or disproved only by further IceCube data. Either way, this will have momentous implications for blazar jets, high-energy astrophysics, and cosmic-ray and neutrino astronomy.

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“…The observed flux in the hotspot [18] . Therefore, a GRB with an extremely high kinetic energy at a distance ∼ Mpc could produce the observed hotspot.…”

mentioning

confidence: 94%

Monte Carlo Bayesian search for the plausible source of the Telescope Array hotspot

Kusenko

Nagataki

et al. 2016

Phys. Rev. D

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The Telescope Array (TA) collaboration has reported a hotspot of 19 ultrahigh-energy cosmic rays (UHECRs). Using a universal model with one source and energy-dependent magnetic deflections, we show that the distribution of the TA hotspot events is consistent with a single source hypothesis, although multiple sources cannot be ruled out. The chance probability of this distribution arising from a homogeneous distribution is 0.2%. We describe a Monte Carlo Bayesian (MCB) inference approach, which can be used to derive parameters of the magnetic fields as well as the source coordinates, and we apply this method to the TA hotspot data, inferring the location of the likely source. We discuss possible applications of the same approach to future data.

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Is the Ultra-High Energy Cosmic-Ray Excess Observed by the Telescope Array Correlated With Icecube Neutrinos?

Cited by 39 publications

References 50 publications

Cosmic ray models

Cosmic ray models

Are both BL Lacs and pulsar wind nebulae the astrophysical counterparts of IceCube neutrino events?

Monte Carlo Bayesian search for the plausible source of the Telescope Array hotspot

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