Observational data and the Big Events
[]
2005
- R.U. Abbasi et al. Monocular measurement of the spectrum of UHE cosmic rays by the FADC
detector of the HiRes experiment. (Astropart. Phys. 23 (2005) 157).
- Katsuaki Asano, Naoshi
Sugiyama. Possibility of Ultra High-Energy Cosmic Rays from the Giant Flare in
SGR 1806-20. (astro-ph/0503335).
- Hans-Joachim Drescher (FIAS), Glennys R.
Farrar. Late Arriving Particles in Cosmic Ray Air Showers and AGASA's
Determination of UHECR Energies. (astro-ph/0506166).
- Glennys R. Farrar. A Cluster of Ultrahigh Energy Cosmic Rays. (astro-ph/0501388).
- Glennys R. Farrar, Andreas A. Berlind, David W. Hogg. Foreground and Source of a Cluster of Ultra-high Energy Cosmic Rays. (astro-ph/0507657).
- C. Ferrigno, P. Blasi, D.D. Marco. High energy gamma ray counterparts of astrophysical sources of
ultra-high energy cosmic rays. (Astropart. Phys. 23 (2005) 211).
- Piera L. Ghia (Pierre Auger Collaboration). Statistical and systematic uncertainties in the event reconstruction
and S(1000) determination by the Pierre Auger surface detector. (astro-ph/0507029 - Proceedings of the 29th International Cosmic Ray
Conference, Pune, India (2005)).
- The High Resolution Fly's Eye Collaboration. Search for Point-Like Sources of Cosmic Rays with Energies above
1018.5 eV in the HiRes-I Monocular Data-Set. (astro-ph/0507663).
- The High Resolution Fly's Eye Collaboration. Search for Cross-Correlations of Ultra--High-Energy Cosmic Rays with
BL Lacertae Objects. (astro-ph/0507120, submitted to ApJ).
- Antoine Letessier-Selvon. Anisotropy Studies Around the Galactic Center at EeV Energies with
Auger Data. (astro-ph/0507331, 2005 ICRC Pune, India, August 2005).
- A.A. Mikhailov, N.N. Efremov, E.S. Nikiforova. Extensive air showers without muon component. (astro-ph/0507680, Proc. ICRC, Pune, India, 2005).
- A.A. Mikhailov, N.N. Efremov. Clusters of Cosmic Rays above 4.1019 eV. (astro-ph/0507682, Proc. ICRC, Pune, India, 2005).
- Elena Pierpaoli, Glennys Farrar. Massive galaxy clusters and the origin of Ultra High Energy Cosmic Rays. (astro-ph/0507679).
- Benoit Revenu (The Pierre Auger Collaboration). Search for localized excess fluxes in Auger sky maps and
prescription results. (astro-ph/0507600).
- Markus Risse et al. Upper limit on the photon fraction in highest-energy cosmic rays
from AGASA data. (astro-ph/0502418).
- Paul Sommers (The Pierre Auger Collaboration). First Estimate of the Primary Cosmic Ray Energy Spectrum above 3 EeV
from the Pierre Auger Observatory. (astro-ph/0507150, 2005 ICRC, Pune, India, August 2005).
2004
- R. Abbasi et al. A search for arrival direction clustering in the HiRes-I monocular data
above 10^19.5 eV. (Astropart. Phys. 22 (2004) 139).
- R. Abbasi et al. Search for global dipole enhancements in the HiRes-I monocular data
above 10^18.5 eV. (Astropart. Phys. 21 (2004) 125).
- H. Bae Kim, P. Tinyakov. Constraining superheavy dark matter model of UHECR with SUGAR data. (Astropart. Phys. 21 (2004) 535).
- D.S. Gorbunov, S.V. Troitsky. A comparative study of correlations between arrival directions of
ultra-high-energy cosmic rays and positions of their potential astrophysical
sources. (astro-ph/0410741).
- High Resolution Fly's Eye Collaboration, R.U. Abbasi. . (Astropart. Phys. 22 (2004) ).
- The High Resolution Fly's Eye Collaboration (HiRes). Search for Point Sources of Ultra-High Energy Cosmic Rays Above 40 EeV Using
a Maximum Likelihood Ratio Test. (astro-ph/0412617, Accepted for publication in The Astrophysical
Journal).
- The High Resolution Fly's Eye Collaboration. A Study of the Composition of Ultra High Energy Cosmic Rays Using the High
Resolution Fly's Eye. (astro-ph/0407622, Submitted to ApJ).
- P. Homola et al. Was the Highest Energy Cosmic Ray a Photon?. (astro-ph/0407341, Cracow Epiphany Conference
on Astroparticle Physics, January 2004.
Acta Phys. Polon. B35 (2004) 1893).
- S.P. Knurenko et al. Muons with E_th >= 1 Gev and Mass Composition in the Energy Range
10^{18}-10^{20} ev Observed by Yakutsk Eas Array. (astro-ph/0411683, 19th European Cosmic Ray Symposium, Aug 30 - Sep 3 2004, Florence,
Italy).
- S.P. Knurenko et al. Spectrum of cosmic rays with energy above $10^{17}$ eV. (astro-ph/0411484, XIII International Symposium on Very High Energy Cosmic Ray
Interaction, Pylos Greece, 6 - 12 Sep 2004).
- S.P. Knurenko et al. Characteristics of EAS and Primary Particle Mass Composition in the Energy
Region of $10^{17} - 3 \cdot 10^{19}$ eV by Yakutsk Data. (astro-ph/0411483, XIII International Symposium on Very High Energy Cosmic Ray
Interaction, Pylos Greece, 6 - 12 Sep 2004).
- A.A.Mikhailov, N.N.Efremov. Are Clusters as Indicators of the Cosmic Ray Anisotropy ?. (astro-ph/0411022, 14-th
Int. School of Cosmic Ray Anisotropy, Erice, Sicily, Italy, 2004).
- A.A. Mikhailov. Clusters in Very High Energy Cosmic Rays. (astro-ph/0403231).
- M. Risse et al. Primary Particle Type of the Most Energetic Fly's Eye Air Shower. (astro-ph/0401629), Astroparticle Physics 21 (2004) 479.
- Benjamin T. Stokes, for the High Resolution Fly's Eye Collaboration. The Search for Anisotropy in the Arrival Directions of Ultra-High Energy
Cosmic Rays Observed by the High Resolution Fly's Eye Detector in Monocular
Mode. (astro-ph/0409377, proceedings of CRIS 2004,
Catania, Italy, 31 May - 4 June 2004 (Nuclear Phys. B).)
- Stefan Westerhoff. Search for Small-Scale Anisotropy of Cosmic Rays above 1019 eV with HiRes
Stereo. (astro-ph/0408343, proceedings of CRIS 2004,
Catania, Italy, 31 May - 4 June 2004 (Nuclear Phys. B)).
- Tadeusz Wibig, Arnold W. Wolfendale. At what particle energy do extragalactic cosmic rays start to predominate?. (astro-ph/0410624).
- Andreas Zech (HiRes Fly's Eye Collaboration). A Measurement of the UHECR Spectrum with the HiRes FADC Detector. (astro-ph/0409140.)
2003
- . . ().
- Luis Anchordoqui, Haim Goldberg. Footprints of Super-GZK Cosmic Rays in the Pilliga State Forest. (hep-ph/0310054).
- Luis A. Anchordoqui et al. Full-Sky Search for Ultra High Energy Cosmic Ray Anisotropies. (astro-ph/0305158, 28th International Cosmic Ray Conference).
- M. Ave, for The Pierre Auger Collaboration. A Study Of Very Inclined Showers In The Pierre Auger Observatory. (astro-ph/0308523, ICRC 2003, Tsukuba, Japan).
- V.Berezinsky, A.Gazizov, S.Grigorieva. Signatures of protons in UHECR. (astro-ph/0302483).
- William S. Burgett, Mark R. O'Malley. Searching for sources of the highest energy cosmic rays: low statistics,
pitfalls, and possible clues. (astro-ph/0312190, presented at 8th Int. Workshop in Topics in Astroparticle
and Underground Physics (TAUP 2003)).
- William S. Burgett, Mark R. O'Malley. Hints of Energy Dependences in AGASA EHECR Arrival Directions. (hep-ph/0301001).
- Daniel De Marco, Pasquale Blasi, Angela V. Olinto. The GZK Feature in the Spectrum of UHECRs: What is it Telling Us?. (astro-ph/0305336).
- M. T. Dova et al. New constraints on the mass composition of cosmic rays above 10^17 eV from
Volcano Ranch measurements. (astro-ph/0312463, Submitted to Astropart. Phys.)
- Chad B. Finley, Stefan Westerhoff. On the Evidence for Clustering in the Arrival Directions of AGASA's
Ultrahigh Energy Cosmic Rays. (astro-ph/0309159, submitted to Astropart. Phys).
- D.S. Gorbunov, S.V. Troitsky. North--South anisotropy in the arrival directions of the extremely high
energy cosmic rays. (astro-ph/0306145).
2002
- John N. Bahcall, Eli Waxman. Has the GZK cutoff been discovered?. (hep-ph/0206217).
- Wyn Evans, Francesc Ferrer, Subir Sarkar. The clustering of ultra-high energy cosmic rays and their sources. (astro-ph/0212533, submitted to Phys. Rev. D).
- Heino Falcke. Detecting Radio Emission from Cosmic Ray Air Showers and Neutrinos with a Digital Radio Telescope. (astro-ph/0207226).
- Yu. A. Fomin et al. Distribution of EAS arrival times according to data of the EAS-1000 prototype array. (astro-ph/0201343, 27th International Conference on Cosmic Rays, Hamburg, 2001, 1, 195-196).
- Yu. A. Fomin et al. Clusters of EAS with electron number >~ 10^4. (astro-ph/0203478).
- High Resolution Fly's Eye Collaboration. Measurement of the Spectrum of UHE Cosmic Rays by the FADC Detector of the HiRes Experiment. (astro-ph/0208301).
- High Resolution Fly's Eye Collaboration. Measurement of the Flux of Ultrahigh Energy Cosmic Rays from Monocular
Observations by the High Resolution Fly's Eye Experiment. (astro-ph/0208243).
- K.-H. Kampert. The Chemical Composition of Cosmic Rays. (astro-ph/0212348, Vulcano Workshop 2002 "Frontier Objects
in Astrophysics and Particle Physics", 20.-25. May, Vulcano (Italy)).
- I. Kravchenko, et al. Limits on the Ultra-High Energy Electron Neutrino Flux from the RICE Experiment. (astro-ph/0206371, submitted to Astroparticle Physics).
- A.A. Mikhailov. Composition of Cosmic Rays with the Energy more than 4x10^{19} eV. (astro-ph/0312468.)
- M. Takeda et al. Energy determination in the Akeno Giant Air Shower Array experiment. (astro-ph/0209422, Astropart. Phys. 19 (2003) 447).
- P. Tinyakov, I. Tkachev. Sources of sub-GZK cosmic rays. (hep-ph/0212223, International Workshop on Extremely High Energy Cosmic
Rays, November 5-6, 2002, RIKEN, Japan).
2001
- T.Abu-Zayyad et. al. Evidence for Changing of Cosmic Ray Composition between 1017 and 1018 eV from Multicomponent Measurements. Phys. Rev. Lett. 84 (2000) 4276. [Confirmation that the composition goes from heavy to light nuclei in this energy range.]
- M. Ave, J.A. Hinton, R.A. Vazquez, A.A. Watson, E. Zas. Constraints on the Ultra High Energy Photon flux using inclined showers from the Haverah Park array. (astro-ph/0110613).
- M. Ave et al. The Energy Spectrum of Cosmic Rays Above $3 \times 10^{17}$ eV as measured with the Haverah Park Array. (astro-ph/0112253).
- N.W. Evans. The Anisotropy of the Ultra-High Energy Cosmic Rays. (astro-ph/0103085).
- P.G. Tinyakov, I. I. Tkachev. Correlation function of ultra-high energy cosmic rays favors point sources. (astro-ph/0102101). [AGASA and Yakutsk multiplets have a chance clustering probability of 4x10-6, which favours compact sources for the UHECR.]
2000
- T.Abu-Zayyad et. al (HiRes-MIA Collaboration). A Measurement of the Average Longitudinal Development Profile of Cosmic Ray Air Showers Between 10^{17}eV and 10^{18}eV. (astro-ph/0008206).
- T.Abu-Zayyad et. al (HiRes-MIA Collaboration). Measurement of the Cosmic Ray Energy Spectrum and Composition from 10^{17} to 10^{18.3} eV Using a Hybrid Fluorescence Technique. (astro-ph/0010652, submited to APJ).
- L. A. Anchordoqui et al. On the nature of cosmic rays above the Greisen--Zatsepin--Kuz'min cut off. (astro-ph/0007403).
- M. Ave et al. New constraints from Haverah Park data on the photon and iron fluxes of UHE cosmic rays. (astro-ph/0007386).
- Steven W. Barwick. Results from the AMANDA High Energy Neutrino Detector. (astro-ph/0009242).
- S. L. Dubovsky, P. G. Tinyakov, I. I. Tkachev. Statistics of clustering of ultra-high energy cosmic rays and the number of their sources. (astro-ph/0001317.)
- Haim Goldberg, Thomas J. Weiler. Clustering in Highest Energy Cosmic Rays: Physics or Statistics?. (astro-ph/0009378).
- N. Hayashida et al. Updated AGASA event list above 4x10^19eV. (astro-ph/0008102, Ap.J. 522 (1999) 225) [Complement with more data to the Takeda et al 1999 article.]
- Gustavo Medina-Tanco. Ultra-high energy cosmic rays: are they isotropic? (astro-ph/0009336).
- Guenter Sigl, Diego Torres, Luis Anchordoqui, Gustavo Romero. Testing the Correlation of Ultra-High Energy Cosmic Rays with High Redshift Sources. (astro-ph/0008363).
- Y.Uchihori et al. Cluster analysis of extremely high-energy cosmic rays in the northern sky. Astropart. Phys. 13 (2000) 151; see astro-ph/9908193.
- Amitabh Virmani et al. Correlation of Ultra High Energy Cosmic Rays with Compact Radio Loud Quasars. (astro-ph/0010235.)
1999
- T. Abu-Zayyad et al (HiRes-MIA Collaboration). A Multi-Component Measurement of the Cosmic Ray Composition Between 10^{17} eV and 10^{18} eV. (astro-ph/9911144).
- L. A. Anchordoqui et al. Unmasking the tail of the cosmic ray spectrum. (astro-ph/9912081).
- D.J.Bird et al. Study of Broad Scale Anisotropy of Cosmic Ray Arrival Directions from $2\times 10^{17} eV$ to $10^{20} eV$ from Fly's Eye Data. ApJ 511 (1999) 739.
- N. Hayashida et al. The Anisotropy of Cosmic Ray Arrival Direction around 10^18eV (astro-ph/9906056, to appear in Proceedings of 26th ICRC - Salt Lake City).
- A. A. Ivanov et al. Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field (astro-ph/9903337). [Yakutsk data.]
- M. Takeda et al (AGASA Collaboration). Small-scale anisotropy of cosmic rays above 10^19eV observed with the Akeno Giant Air Shower Array (astro-ph/9902239, ApJ 522 (1999) 225). [Data on the Big Events, including the 3 doublets and one triplet.]
- Y. Uchihori et al. Cluster Analysis of Extremely High Energy Cosmic Rays in the Northern Sky (astro-ph/9908193, Astropart. Phys. 13 (2000) 151).
1998
- H.Y. Dai et al.
Study of Broad Scale Anisotropy of Cosmic Ray Arrival Directions from $2\times 10^{17} eV$ to $10^{20} eV$ from Fly's Eye Data.(astro-ph/9806096). [Evidence for a statistically significant of galactic plane enhancement of the arrival directions. No supergalactic plane correlations found.]
- B. R. Dawson, R. Meyhandan, K. M. Simpson.
A Comparison of Cosmic Ray Composition Measurements at the Highest Energies
.(astro-ph/9801260).
[A comparison of the Akeno and Fly's Eye experiments on cosmic ray composition
studies above 1017 eV using the same hadronic model.]
- Graciela Gelmini and Alexander Kusenko. Highest-energy cosmic rays from Fermi-degenerate relic neutrinos consistent with Super-Kamiokande results (hep-ph/9902354).
- N. Hayashida et al. (AGASA collaboration). The Anisotropy of Cosmic Ray Arrival Directions around 10$^{18}$eV (astro-ph/9807045).
- D. Horns, D. Schmele (for the HEGRA Collaboration).
Anisotropies of Cosmic Rays and Search for Intergalactic Cascades from the
direction of the Highest Energetic Cosmic Ray Events with the HEGRA
Scintillator Array (astro-ph/9909125).
- Gustavo A. Medina Tanco. On the significance of the observed clustering
of ultra-high energy cosmic rays. (astro-ph/9801060).
[Analysis of the 1996 Hayashida paper's paired events as possible signature of
point sources.]
- Gustavo Medina Tanco. The energy spectrum observed by the AGASA experiment and
the spatial distribution of the sources of ultra-high energy cosmic rays (astro-ph/9810366, accepted for publication in Astrophys. J. Letters. October 1998).
- M. Takeda et al. (AGASA collaboration). Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff (astro-ph/9807193, Phys. Rev. Lett. 81 (1998) 1163).
- Shigeru Yoshida, Hongyue Dai. The Extremely High Energy Cosmic Rays.
(astro-ph/9802294).
Journal of Physics G 24 (1998) 905. [Experimental results from Haverah
Park, Yakutsk, AGASA and Fly's Eye are reviewed.]
1997
- C.W.Akerlof et al. A search for correlations of TeV gamma-rays with
ultra-high energy cosmic rays. 13 June 1997. Submitted to ApJ. (astro-ph/9706123.)
1996
- A.Borione et al (CASA-MIA collaboration). A High Statistics Search for
Ultra-High Energy Gamma-Ray Emission from Cygnus X-3 and Hercules X-1.
November 1996. To be published in Phys. Rev. D. (astro-ph/9611117).
[Search for ultra-high energy gamma-ray emission from the X-ray binary
sources Cygnus X-3 and Hercules X-1. The negative results highlight the
difficulties that possible future experiments will have in detecting gamma-ray
signals at ultra-high energies.]
- N.Hayashida et al. Possible clustering of the most energetic cosmic
rays within a limited space angle observed by AGASA. PRL 77 (1996)
1000. [A preprint version of this article (PS file)
announced possible correlations with the supergalactic plane. This article
concludes on isotropy of most of the events detected. Three pairs of events
come from the same direction within errors and could provide information about
the maximum charge allowed using the galactic magnetic fields as a
spectrometer, IF a point-like source scenario is used.]
- L.J.Kewley, R.W.Clay, B.R.Dawson. Arrival directions of the southern
highest energy cosmic rays. Astropart. Phys. 5 (1996) 69. [Data from
the only southern hemisphere detector for EHECRs. No correlation found with
supergalactic plane.]
- T.Stanev, R.Schaefer, A.Watson. Search for correlations between the
highest energy cosmic rays and gamma ray bursts. Astropart. Phys. 5
(1996) 75. [Comparison between the Haverah Park data and the BATSE catalog of
GRBs. No statistically significant spatial correlations are found.]
1995
- D.J.Bird et al. Detection of a Cosmic Ray with measured
energy well beyond the expected spectral cutoff due to cosmic microwave
radiation. Astrophys. J. 441 (1995) 144. [The Fly's Eye event.]
- J.W.Elbert, P.Sommers. In search of a source for the 320 EeV Fly's Eye
cosmic ray. Astrophys. J. 441 (1995) 151.
- A.V.Glushkov et al. Muon component of EAS with enegies above 10**17
eV. Astrop. Phys. 4 (1995) 15. [Results from the Yakutsk array.]
- F.Halzen et al. The highest energy cosmic ray. Astropart. Phys.
3 (1995) 151. [Interpretation of the FE event.]
- T.Stanev et al. Arrival directions of the most energetic cosmic
rays. Phys. Rev. Lett. 75 (1995) 3056. [Directional correlation of
the cosmic rays with energies >4.10**19 eV with the supergalactic plane.]
- S.Yoshida et al. The cosmic ray energy spectrum above 3x10**18 eV
measured by the Akeno Giant Air Shower Array. Astropart. Phys. 3
(1995) 105. [AGASA events.]
1991
- M.A.Lawrence, R.J.O.Reid, A.A.Watson. J. Phys. G. 17 (1991) 733. [First Big Events from Haverah Park.]
1990
- N.N.Efimov et al. Proc. Int. Workshop on the Astrophysical aspects of the
most energetic cosmic rays. M.Nagano and F.Takahara eds. World Scientific
(1990). [Yakutsk event.]
1985
- G.Brooke et al. Proc. 19th ICRC (La Jolla) 2 (1985)
150. [Haverah Park events.]
1962
- J.Linsley. Evidence for a primary cosmic ray particle with energy 10**20
eV. Phys. Rev. Lett. 10 (1962) 146. [First event observed and qualified as having reached the symbolic limit of 100 EeV.]