Now showing items 1-20 of 744

    • INJECTION MOLDING AND STRUCTURAL ANALYSIS IN METAL TO PLASTIC CONVERSION OF BOLTED FLANGE JOINT BY CAE 

      Author: Blaško, Marian; Tittel, Viktor; Náplava, Antonín; Ondruška, Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Many metal parts in various applications are being replaced by plastic parts. There are several reasons for that depending on actual application - minimize part cost, enhance corrosion resistance, integrating more components ...
    • STABILITY OF BOSE-EINSTEIN CONDENSATES IN A PT-SYMMETRIC DOUBLE-δ POTENTIAL CLOSE TO BRANCH POINTS 

      Author: Löhle, Andreas; Cartarius, Holger; Haag, Daniel; Dast, Dennis; Main, Jörg; Wunner, Günter Wunner
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      A Bose-Einstein condensate trapped in a double-well potential, where atoms are incoupled to one side and extracted from the other, can in the mean-field limit be described by the nonlinear Gross-Pitaevskii equation (GPE) ...
    • X-RAY VARIABILITY STUDY OF POLAR SCATTERED SEYFERT1 GALAXIES 

      Author: Beuchert, Tobias; Wilms, Jörn; Kadler, Matthias; Longinotti, Anna Lia; Guainazzi, Matteo; Miniutti, Giovanni; de la Calle, Ignacio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We study 12 Seyfert 1 galaxies with a high level of optical polarization. Optical light emerging from the innermost regions is predominantly scattered in a polar region above the central engine directly in our line of ...
    • PRECISE COSMIC RAYS MEASUREMENTS WITH PAMELA 

      Author: Bruno, A.; Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A.; Bellotti, R.; Boezio, M.; Bogomolov, E. A.; Bongi, M.; Bonvicini, V.; Borisov, S.; Bottai, S.; Cafagna, F.; Campana, D.; Carbone, R.; Carlson, P.; Casolino, M.; Castellini, G.; Consiglio, L.; De Pascale, M. P.; De Santis, C.; De Simone, N.; Di Felice, V.; Galper, A. M.; Gillard, W.; Grishantseva, L.; Jerse, G.; Karelin, A. V.; Kheymits, M. D.; Koldashov, S. V.; Krutkov, S. Y.; Kvashnin, A. N.; Leonov, A.; Malakhov, V.; Marcelli, L.; Mayorov, A. G.; Menn, W.; Mikhailov, V. V.; Mocchiutti, E.; Monaco, A.; Mori, N.; Nikonov, N.; Osteria, G.; Palma, F.; Papini, P.; Pearce, M.; Picozza, P.; Pizzolotto, C.; Ricci, M.; Ricciarini, S. B.; Rossetto, L.; Sarkar, R.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stozhkov, Y. I.; Vacchi, A.; Vannuccini, E.; Vasilyev, G.; Voronov, S. A.; Yurkin, Y. T.; Wu, J.; Zampa, G.; Zampa, N.; Zverev, V. G.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The PAMELA experiment was launched on board the Resurs-DK1 satellite on June 15th 2006. The apparatus was designed to conduct precision studies of charged cosmic radiation over a wide energy range, from tens of MeV up to ...
    • RADIOACTIVE UHECR ASTRONOMY: CORRELATING GAMMA ANISOTROPY AND NEUTRINO PEV EVENTS 

      Author: Fargion, Daniele
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      UHECR (Ultra High Energy Cosmic Rays) were expected to be protons, to fly straight and to suffer of a GZK (opacity on CMB radiation) cut off. AUGER did suggest on 2007 that such early UHECR anisotropy was compatible with ...
    • INVESTIGATING THE Ep, i –Eiso CORRELATION 

      Author: Amati, Lorenzo; Dichiara, Simone
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The correlation between the spectral peak photon energy, Ep, and the radiated energy or luminosity (i.e., the “Amati relation” and other correlations derived from it) is one of the central and most debated topics in GRB ...
    • INFLUENCE OF THE RESULTS OF UHECR DETECTION ON THE LHC EXPERIMENTS 

      Author: Petrukhin, Anatoly A.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The cosmic ray energy region 1015 ÷ 1017TeV corresponds to LHC energies 1 ÷ 14TeV in the center-of-mass system. The results obtained in cosmic rays (CR) in this energy interval can therefore be used for developing new ...
    • DO WE SEE THE ‘IRON PEAK’? 

      Author: Erlykin, Anatoly D.; Wolfendale, Arnold W.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Recent measurements of the cosmic ray (CR) energy spectrum in the PeV region and above have confirmed the remarkable sharpness of the knee and revealed another structure at about 70PeV which we call the ‘Iron Peak’. The ...
    • COMPUTATIONAL SCHEMES FOR THE PROPAGATION OF ULTRA HIGH ENERGY COSMIC RAYS 

      Author: Aloisio, Roberto
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We discuss the problem of ultra high energy particles propagation in astrophysical backgrounds. We present two different computational schemes based on kinetic and Monte Carlo approaches. The kinetic approach is an analytical ...
    • RESULTS FROM LHCF EXPERIMENT 

      Author: Tricomi, Alessia
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The LHCf experiment has taken data in 2009 and 2010 p–p collisions at LHC at √s = 0.9TeV and √s = 7TeV. In this paper the most up-to-date results on the inclusive photon spectra and the π0 spectra measured by LHCf are ...
    • ULTRAHIGH ENERGY COSMIC RAYS: REVIEW OF THE CURRENT SITUATION 

      Author: Stanev, Todor
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We describe the current situation of the data on the highest energy particles in the Universe – the ultrahigh energy cosmic rays. The new results in the field come from the Telescope Array experiment in Utah, U.S.A. For ...
    • THE MASS COMPOSITION OF ULTRA HIGH ENERGY COSMIC RAYS 

      Author: Grillo, Aurelio F.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The status of the Mass Composition measurements of Ultra High Energy Cosmic Rays is presented, with emphasis on the results from the Fluorescence Detector of the Pierre Auger Observatory. Possible consequences of the present ...
    • MOONLIGHT: A NEW LUNAR LASER RANGING RETROREFLECTOR AND THE LUNAR GEODETIC PRECESSION 

      Author: Martini, M.; Dell’Agnello, S.; Currie, D.; Delle Monache, G. O.; Vittori, R.; Berardi, S.; Boni, A.; Cantone, C.; Ciocci, E.; Lops, C.; Garattini, M.; Maiello, M.; Patrizi, G.; Tibuzzi, M.; Intaglietta, N.; Chandler, J.; Bianco, G.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Since the 1970s Lunar Laser Ranging (LLR) to the Apollo Cube Corner Retroreflector (CCR) arrays (developed by the University of Maryland, UMD) supplied almost all significant tests of General Relativity (Alley et al., 1970; ...
    • THE PAST AND THE FUTURE OF DIRECT SEARCH OF GW FROM PULSARS IN THE ERA OF GW ANTENNAS 

      Author: Milano, L.; Calloni, E.; De Rosa, R.; De Laurentis, M.; Di Fiore, L.; Garufi, F.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      In this paper we will give an overview of the past and present status of Gravitational Wave (GW) research associated with pulsars, taking into account the target sensitivity achieved from interferometric laser GW antennas ...
    • NEUTRINOS AS COSMIC MESSENGERS IN THE ERA OF ICECUBE, ANTARES AND KM3NET 

      Author: Katz, Uli F.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Using neutrinos as cosmic messengers for observation of non-thermal processes in the Universe is a highly attractive and promising vision, which has been pursued in various neutrino telescope projects for more than two ...
    • RECENT DEVELOPMENTS IN ULTRA-HIGH ENERGY NEUTRINO ASTRONOMY 

      Author: Grieder, Peter K. F.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We outline the current situation in ultrahigh energy (UHE) cosmic ray physics, pointing out the remaining problems, in particular the puzzle concerning the origin of the primary radiation and the role of neutrino astronomy ...
    • LIMIT ON UHE NEUTRINO FLUXES FROM THE PIERRE AUGER OBSERVATORY 

      Author: Maldera, S.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The surface detector of the Pierre Auger Observatory is sensitive to Ultra High Energy (UHE) neutrinos. Neutrinos of all flavors can interact in the atmosphere producing inclined showers near the ground. Moreover, ultra ...
    • SEARCH FOR GRAVITATIONAL WAVES FROM SUPERNOVAE AND LONG GRBS 

      Author: van Putten, Maurice H.P.M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We report on evidence for black hole spindown in the light curves of the BATSE catalogue of 1491 long GRBs by application of matched filtering. This observation points to a strong interaction of the black hole with surrounding ...
    • NEUTRINOS FROM ICARUS 

      Author: Farnese, Christian
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Liquid Argon Time Projection Chambers are very promising detectors for neutrino and astroparticle physics due to their high granularity, good energy resolution and 3D imaging, allowing for a precise event reconstruction. ...
    • ANALYSIS OF THE MACRO EXPERIMENT DATA TO COMPARE PARTICLE ARRIVAL TIMES UNDER GRAN SASSO 

      Author: Ronga, Francesco
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The claim of a neutrino velocity different from the speed of the light, made in September 2011 by the Opera experiment, suggested the study of the time delays between TeV underground muons in the Gran Sasso laboratory using ...