Organized by the. Inter-University Centre for Astronomy & Astrophysics. 29th International Cosmic Ray Conference. 2005, Pune, India.

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1 29th International Cosmic Ray Conference August 3-10, 2005, Pune, India Organized by the Tata Institute of Fundamental Research Navy Nagar, Colaba, Mumbai, MH at the National Centre for Radio Astrophysics, Inter-University Centre for Astronomy & Astrophysics and University of Pune, Pune Under the auspices of the International Union of Pure & Applied Physics (TUPAP) UB/TIB Hannover 89

2 VOLUME 7: HE 1.4 LIST OF CONTENTS HE.1.4 : OBSERVATIONS AND SIMULATIONS AT ENERGIES > 1018 ev Performance of the Pierre Auger Observatory Surface Array 1 X. Bertou (arg-bertou-x-absl-hel4-oral) Hinting at primary composition using asymmetries in time distributions 5 M.T. Dova et al. (arg-dova-mt-absl-hel4-oral) Current status of the AIRES air shower simulation system 9 S.J. Sciutto (arg-sciutto-sj-absl-hel4-oral) Performance of the Fluorescence Detectors of the Pierre Auger Observatory 13 J.A. Bellido (aus-bellido-j-absl-hel4-oral) Angular Resolution of the Pierre Auger Observatory 17 C. Bonifazi (bra-bonifazi-c-absl-hel4-oral) Lateral width of shower image in the Auger fluorescence detector 21 V. de Souza (bra-desouza-v-absl-hel4-poster) Analysis of shower size as estimator of extensive air shower energy 25 V. de Souza et al. (bra-desouza-v-abs2-hel4-oral) Acceptance of fluorescence detectors for photons and its implication in energy spectrum 29 inference at the highest energies V. de Souza et al. (bra-desouza-v-abs3-hel4-poster) Alternative energy estimation from the shower lateral distribution function 33 V. de Souza et al. (bra-escobar-co-abs2-hel4-poster) The importance of muon information on primary mass discrimination of ultra-high 37 energy cosmic rays D. Supanitsky et al. (bra-etchegoyen-a-abs2-hel4-poster) Cosmic magnetic field uncertainties and the constraints in top-down ultra-high energy 41 cosmic ray models G.A. Medina-Tanco (bra-medinatanco-g-absl-hel4-poster) Dependence of the energy reconstruction on precision shower arrival direction and core 43 location in a regular surface detector array G.A. Medina-Tanco et al. (bra-medinatanco-g-abs3-hel4-poster) The observational signatures of ultra-high energy A.G.O. Krone-Martins et al. (bra-medinatanco-g-abs4-hel4-oral) cosmic rays in the Galactic Center 47 Analysis of extensive air showers with the hybrid code SENECA 51 J.A. Ortiz et al. (bra-ortiz-ja-absl-hel4-poster) AIRFLY: Measurement of the fluorescence yield in atmospheric gases 55 F. Arciprete et al. (cze-bohacova-m-abs 1 -he 14-poster)

3 11 Volume 7: List of Contents Validity of the estimators of primary energy in giant EAS 59 J.N. Capdevielle et al. (fra-capdevielle-jn-absl-hel4-oral) Coverage and large scale anisotropics estimation methods for the Pierre Auger 63 Observatory J.C. Hamilton (fra-hamilton-jc-absl-he 14-oral) Anisotropy Studies Around the Galactic Center at EeV Energies with Auger Data 67 A. Letessier-Selvon (fra-letessier-selvon-a-absl-hel4-oral) Aperture calculation of the Pierre Auger Observatory surface detector 71 D. Allard et al. (fra-parizot-e-absl-hel4-poster) Search for localized excess fluxes in Auger sky maps and prescription results 75 B. Revenu (fra-revenu-b-abs 1 -he 14-oral) GZK Photons in the Ultra High Energy Cosmic Rays 79 D.V. Semikoz (fra-semikoz-d-absl-hel4-oral) Response of the Pierre Auger Observatory Water Cherenkov Detectors to Muons 83 M. Aglietta et al. (fra-suornijarvi-t-absl-hel4-poster) Studies of Systematic Uncertainties in the HiRes-II Measurement of the UHECR 87 Spectrum A, Zech (fra-zech-a-absl-hel4-poster) Depth Development of Extensive Air Showers from Muon Time Distributions 91 L. Cazon et al. (ger-cazon-l-absl-hel4-oral) Air Shower Properties with the Gluon Saturation Model BBL 95 H.J. Drescher (ger-drescher-h-absl-hel4-oral) Top-Down Reconstruction of Ultrahigh Energy Air Showers 99 F. Schuessler et al. (ger-engel-r-absl-hel4-poster) Dependence of the longitudinal shower profile multiparticle production T. Pierog et al. (ger-engel-r-abs2-hel4-oral) on the characteristics of hadronic 103 Fluctuations in the EAS radio signal derived with improved Monte Carlo simulations 107 based on CORSIKA T. Huege et al. (ger-huege-t-absl-hel4-oral) High energy cosmic rays and the Galactic magnetic field 111 M. Kachelriess et al. (ger-kachelriess-m-absl-he 14-oral) Validation of the Real and Simulated Data of the Pierre Auger Fluorescence Telescopes 115 A. Ewers et al. (ger-kampert-k-abs3-hel4-poster) Nitrogen fluorescence yield in dependence on atmospheric conditions 119 B. Keilhauer et al. (ger-keilhauer-b-abs1 -he14-oral) Atmospheric Profiles at the Southern Pierre Auger Observatory and their Relevance to 123 Air Shower Measurement J. Bluemer et al. (ger-keilhauer-b-abs2-hel4-poster)

4 Volume 7: List of Contents u Parameterisation of Cherenkov light production in high-energy showers 127 F. Nerling et al. (ger-nerling-f-absl-hel4-oral) Impact of a new Cherenkov light parameterisation on the reconstruction of shower 131 profiles from Auger hybrid data F. Nerling et al. (ger-nerling-f-abs2-hel4-poster) Hadronic Interactions in QGSJET-II: Physics and Results 135 S. Ostapchenko et al. (ger-ostapchenko-s-absl-hel4-oral) Extensive Air Shower Simulation Program CONEX: Matching Monte Carlo and 139 Numerical Methods M. Alekseeva et al. (ger-ostapchenko-s-abs2-hel4-poster) Derivation of upper limit on the photon fraction using the highest-energy AGASA 143 cosmic rays M. Risse et al. (ger-risse-m-absl-hel4-poster) Upper limit on the primary photon fraction from the Pierre Auger Observatory 147 M. Risse (ger-risse-m-abs2-hel4-oral) Chemical composition of ultra-high energy cosmic rays estimated by muon 151 measurement with AGASA K. Shinozaki et al. (ger-shinozaki-k-abs3-hel4-oral) AIRES EAS Simulations for the Energy Estimation of UHECR 155 A. Geranios et al. (gre-fokitis-e-abs2-hel4-poster) New results from Gauhati University miniarray detector 159 U.D. Goswami et al. (ind-devgoswami-u-abs2-hel4-poster) On primary mass composition of giant air showers 163 J. Saikia et al. (ind-saikia-j-absl-hel4-oral) Statistical and systematic uncertainties in the event reconstruction and S(1000) 167 determination by the Pierre Auger surface detector P.L. Ghia (ita-ghia-p-absl-hel4-oral) Search for exotic contributions to atmospheric neutrino oscillations 171 G. Battistoni et al. (ita-margiotta-a-abs2-hel4-poster) Propagation of Ultra-High Energy Cosmic Rays above 1019 ev in a Structured 175 Extragalactic Magnetic Field and Galactic Magnetic Field H. Takami et al. (jap-takami-h-absl-hel4-oral) A possible cosmic ray source in TeV and EeV from the direction around the Cygnus 179 Loop M. Takeda et al. (jap-takeda-m-absl-he 14-poster) Detection of Very Inclined Showers with the 183 Auger Observatory L. Nellen (mex-nellen-l-absl-hel4-oral) A new parameterisation of the longitudinal shower development 187 M. Giller et al. (pol-giller-m-absl-hel4-oral) Universality of the lateral distribution of energy deposit in extensive air showers 191 D. Gora et al. (pol-gora-d-absl-hel4-oral)

5 an IV Volume 7 : List of Contents Multiple scattering of the fluorescence light from EAS 195 M. Giller et al. (pol-smialkowski-a-abs 1 -he 14-poster) - Similarity of the extensive air showers fluorescence light detector M. Giller et al. (pol-wieczorek-g-absl-hel4-poster) application to their reconstruction from a 199 Variability of atmospheric depth profiles 203 B. Wilczynska et al. (pol-wilczynska-b-absl-hel4-poster) Atmospheric multiple scattering of fluorescence and Cherenkov light from air shower 207 J. Pekala et al. (pol-wilczynski-h-abs 1 -he 14-poster) Estimates of the Muon Signal in Giant Air Showers Induced by the Primary Photons 211 L.G. Dedenko et al. (rus-dedenko-lg-absl-he 14-oral) Simulations of Lateral Distributions of a Signal Produced in Scintillation Detectors by 215 Giant Air Showers L.G. Dedenko et al. (rus-dedenko-lg-abs2-hel 4-poster) A Calibration of Energy Estimates of Giant Air Showers with Help of the Cherenkov 219 Radiation L.G. Dedenko et al. (rus-dedenko-lg-abs3-he14-poster) Resolvent approach to the Volterra equation as a tool for EAS modeling 223 A.A. Ivanov (rus-ivanov-aa-absl-he 14-poster) Estimate of the Mass Composition of Ultrahigh Energy Cosmic Rays 227 A.A. Mikhailov et al. (rus-mikhailov-aa-absl-he 14-oral) Clusters of Cosmic Rays above ev 231 A.A. Mikhailov et al. (rus-mikhailov-aa-abs2-hel4-poster) Extensive air showers without muon component 235 A.A. Mikhailov et al. Increase in the Absorption Length Selection Types (rus-mikhailov-aa-abs3-he 14-poster) E. S. Nikiforova (rus-nikiforova-e-abs1 -he 14-oral) of Inclined Extensive Air Showers with Different 239 Estimation of the giant shower energy at the Yakutsk EAS Array 243 M.I. Pravdin et al. (rus-pravdin-mi-absl-he14-poster) Multipolar Anisotropy in the Arrival Directions of E0 >=8x 10t8 ev Cosmic Rays 247 A.V. Glushkov et al. (rus-pravdin-mi-abs2-hel4-poster) Spectra of Above 1017eV Cosmic Rays from the Different Sky Regions by Yakutsk EAS 251 Array Data A.V. Glushkov et al. (rus-pravdin-mi-abs3-hel4-poster) On the Nature ofevents with Energies Above the Energy of GZK Cutoff 255 V.S. Ptuskin et al. (rus-ptuskin-v-abs2-hel4-poster) Approximation of measured longitudinal development of EAS at ultra high-energies 259 with errors taken into account A.A. Kirillov et al. (rus-shozieev-g-absl-hel4-oral)

6 Volume 7: List of Contents Possible influence of quark-gluon plasma formation on lateral distributions of charged 263 particles and muons in EAS V.R. Sleptsova et al. (rus-sleptsova-vr-absl-hel4-poster) Dependence of the Air-Fluorescence Yield on Electron Energy 267 F. Arqueros et al. (spa-arqueros-f-abs2-hel4-oral) Experimental determination of air fluorescence yield from low-energy (LEEAF experiment) F. Blanco et al. (spa-arqueros-f-abs3-hel4-poster) electrons 271 The mass of cosmic rays above 1017 ev 275 M.T. Dova et al. (uki-mariazzi-a-absl-hel4-oral) Calibration of the surface array of the Pierre Auger Observatory 279 M. Aglietta et al. (usa-allison-ps-absl-hel4-poster) A description of some ultra high energy cosmic rays observed with the Pierre Auger 283 Observatory M. Ave Pernas (usa-ave-pernas-m-absl-hel4-oral) The trigger system of the Pierre Auger Surface Detector: operation, efficiency and 287 stability D. Allard et al. (usa-bauleo-pm-absl-hel4-poster) Measurement of the Lateral Distribution Function of UHECR Air shower with the 291 Pierre Auger Observatory D. Barnhill et al. (usa-bauleo-pm-abs2-hel4-poster) Measurement of atmospheric aerosols in southeast Colorado using backscatter LIDAR 295 and a shadow-band solar radiometer J.L. Harton et al. (usa-bauleo-pm-abs3-hel4-oral) Arrival Directions of Ultra-High Energy Cosmic Rays within The HiRes-I Monocular 299 Dataset: A Search for Overlaps with the Reported AGASA Clusters J. Belz (usa-belz-j-absl-hel4-poster) Search for Pointlike Sources of Cosmic Rays with Energies above 1018'5 ev in the HiRes- 303 I Monocular Dataset J. Belz et al. (usa-belz-j-abs2-hel4-poster) Monocular UHECR Spectrum Measurements from HiRes 307 D.R. Bergman (usa-bergman-d-absl-hel4-poster) UHECR Composition Measurements Using the HiRes-II Detector 311 D.R. Bergman (usa-bergman-d-abs2-hel4-poster) Fitting the HiRes Spectra 315 D.R. Bergman (usa-bergman-d-abs3-hel4-oral) An Universal Description of the Particle Flux Distributions in Extended Air Showers 319 A.S. Chou et al. (usa-chou-a-absl-hel4-poster) A New Technique to Measure Cosmic Ray Energy and Composition Via (2+l)d Distribution Function Fits to Surface Detector Array Data A.S. Chou et al. (usa-chou-a-abs2-hel4-oral) Lateral 323

7 VI Volume 7: List of Contents A Likelihood Method for Measuring the Ultrahigh Energy Cosmic Ray Composition 327 B.M. Connolly et al. (usa-connolly-b-absl-he 14-poster) Correlations of Ultrahigh Energy Cosmic Rays with BL Lac - Objects Is for Neutral Primaries? B.M. Connolly et al. (usa-connolly-b-abs2-hel4-poster) there Evidence 331 Xmax and energy systematic errors due to molecular atmosphere variations 335 Y. Fedorova (usa-fedorova-y-absl-hel4-poster) Search for Cross-Correlations of Ultra-High-Energy Cosmic Rays With BL Lacertae 339 Objects C.B. Finley et al. (usa-finley-c-absl-he 14-oral) p-air inelastic cross-section at ultra-high energies 343 K. Belov (usa-konstantin-belov-absl-hel4-oral) Studies of Air Showers above 10,8eV with the CHICOS Array 347 T.W. Lynn et al. (usa-lynn-t-absl-he 14-oral) Preliminary Results on the High Energy Cosmic Ray Spectrum from the Stereo 351 Analysis of the HiRes Fly's Eye Data J.H. Boyer et al. (usa-mannel-ej-abs l-hel4-oral) Limits on the Diffuse Neutrino Flux from HiRes Data 355 W. Deng et al. (usa-martens-k-absl-hel4-oral) Studies of Signal Waveforms From the Water-Cherenkov Detectors of the Pierre Auger 357 Observatory P.S. Allison et al. (usa-matthews-james-absl-hel4-poster) Cross-checks of the HiRes Monocular Flux Measurements 361 T. Abu-Zayyad et al. (usa-rnatthews-john-absl-hel4-poster) Calibrating the High Resolution Fly's Eye (HiRes) Detector 365 J.N. Matthews et al. (usa-matthews-john-abs3-hel4-poster) The Hybrid Performance of the Pierre Auger Observatory 369 M.A. Mostafa (usa-mostafa-m-absl-he14-oral) Limit on the flux of ultra-high energy photons from the HiRes Stereo Data 373 A.C. O'Neill et al. (usa-oneill-a-absl-hel4-oral) Search for a Galactic Enhancement of the Ultra-High-Energy Cosmic Rays Using the 377 HiRes Stereo Data G. Sinnis (usa-sinnis-g-absl-hel4-oral) Comparison of UHE Composition Measurements by Fly's Eye, HiRes-prototype/MIA 381 and Stereo HiRes Experiments P. Sokolsky (usa-sokolsky-p-absl-hel4-oral) UHE Composition Measurement by Stereo HiRes Experiment 385 P. Sokolsky et al. (usa-sokolsky-p-abs2-hel4-poster) First Estimate of the Primary Cosmic Ray Energy Spectrum above 3 EeV from the 387 Pierre Auger Observatory P. Sommers (usa-sommers-p-absl-hel4-oral)

8 Volume 7 : List of Contents Measurements of UHECR Spectrum with the HiRes detector R.W. Springer (usa-springer-w-absl-hel4-oral) Searching for Anisotropy with the HiRes-II Data D. Ivanov et al. (usa-thomson-g-absl-hel4-poster) Search for Point Sources of Ultra-High-Energy Cosmic Rays Above 1019eV Using a Maximum Likelihood Ratio Test S. Westerhoff et al. (usa-westerhoff-s-absl-hel4-oral) Atmospheric Monitoring at the High Resolution Fly's Eye J. Boyer et al. (usa-wiencke-lr-abs 1 -hel 4-poster)

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