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Ultra-high energy nuclei source in the direction to Virgo cluster
High Energy Astrophysical Phenomena · Submitted 20 Sep 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The existence of nuclei sources in the sky opens the road for a self-consistent description of Auger data.
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
The significant anisotropy in the arrival directions of the 69 events with energy E> 55 EeV detected by Pierre Auger collaboration is located in the 20-degree region centered near Cen A. Not only the 2-point, but also the 3-point and 4-point autocorrelation functions are completely saturated by this region. Besides there is an deficit of events in the direction of Virgo cluster. If one assumes that the excess around Cen A is due to heavy nuclei shifted from Virgo, one can explain 20-degree scale of this anomaly. Also location of the highest energy event between the Cen A region and the Virgo cluster supports this idea. Magnitude and direction of the magnetic field is similar in this case to those expected for Galactic models. The existence of nuclei sources in the sky opens the road for a self-consistent description of Auger data.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The significant anisotropy in the arrival directions of the 69 events with energy E> 55 EeV detected by Pierre Auger collaboration is located in the 20-degree region centered near Cen A. | result 0.96 | 0.19 | 0.22 | asserted 1.00 |
| s1 | Not only the 2-point, but also the 3-point and 4-point autocorrelation functions are completely saturated by this region. | result 1.00 | 0.63 | 0.07 | asserted 1.00 |
| s2 | Besides there is an deficit of events in the direction of Virgo cluster. | result 1.00 | 0.64 | 0.08 | asserted 1.00 |
| s3 | If one assumes that the excess around Cen A is due to heavy nuclei shifted from Virgo, one can explain 20-degree scale of this anomaly. | interpretation 1.00 | 0.49 | 0.42 | hedged possibility 0.96 |
| s4 | Also location of the highest energy event between the Cen A region and the Virgo cluster supports this idea. | interpretation 0.68 | 0.58 | 0.08 | asserted 0.53 |
| s5 | Magnitude and direction of the magnetic field is similar in this case to those expected for Galactic models. | interpretation 0.64 | 0.42 | 0.05 | asserted 0.94 |
| s6 | The existence of nuclei sources in the sky opens the road for a self-consistent description of Auger data. | interpretation 0.98 | 0.29 | 0.49 | asserted 0.95 |
What was examined, and what was not
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The paper
Original abstract
The significant anisotropy in the arrival directions of the 69 events with energy E> 55 EeV detected by Pierre Auger collaboration is located in the 20-degree region centered near Cen A. Not only the 2-point, but also the 3-point and 4-point autocorrelation functions are completely saturated by this region. Besides there is an deficit of events in the direction of Virgo cluster. If one assumes that the excess around Cen A is due to heavy nuclei shifted from Virgo, one can explain 20-degree scale of this anomaly. Also location of the highest energy event between the Cen A region and the Virgo cluster supports this idea. Magnitude and direction of the magnetic field is similar in this case to those expected for Galactic models. The existence of nuclei sources in the sky opens the road for a self-consistent description of Auger data.
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How the literature uses it
3 arXiv papers cite this in 9 sentences
Papers citing it · 7 sentences without a confident label
Uses its method or tool 1 paper
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By computing the 2, 3 and 4-point autocorrelation functions, defined as in Ref. [ref] , we find that the rest of the sky is currently still compatible with isotropy.
Search for Nuclei Sources in the Ultra-High Energy Cosmic Ray Data · Discussion · 0.83
Uses its data or values 1 paper
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Ref. [ref] found 4% with a Kolmogorov-Smirnov test, and Ref. [ref] 3% (resp. 2%) with 3-point (resp. 4-point) autocorrelation functions.
Method to Look for Imprints of Ultrahigh Energy Nuclei Sources · Application to the data of the Pierre Auger Observatory · 0.87
What it cites · 27 sentences without a confident label
Uses data or values from 3 papers
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From other side, the excess of events in the 18$^∘$ circle centered on the Cen A position is with 4% probability by chance as shown by Kolmogorov-Smirnov test [ref] .
Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter · Introduction · 0.89
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At $E=2-3$ EeV, a $1σ$ fluctuation of the Auger background corresponds to about 100 events [ref] .
Anisotropy vs chemical composition at ultra-high energies · Introduction · 0.87
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[ref] , one can describe data with proton deflections $Q=1$ dominated by extragalactic field.
Ultra-High Energy Cosmic Ray Probes of Large Scale Structure and Magnetic Fields · Introduction · 0.86
Cites as background 2 papers
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Recently a very important step towards an understanding of Ulra-High Energy Cosmic Rays (UHECR) was done by Pierre Auger Collaboration [ref] .
Measurement of the Depth of Maximum of Extensive Air Showers above 10^18 eV · Introduction · 0.83
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Deflections of UHECR nuclei with $E>60$ EeV in the regular galactic magnetic field were studied recently in Ref. [ref] .
Ultrahigh Energy Nuclei in the Galactic Magnetic Field · Introduction · 0.87
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