• Publications
  • Influence
Evidence for correlated changes in the spectrum and composition of cosmic rays at extremely high energies.
  • Bird, Corbató, +18 authors Tilav
  • Physics, Medicine
  • Physical review letters
  • 22 November 1993
The Utah Fly's Eye detector has revealed a change in the cosmic ray composition which is correlated with structure in the all-particle energy spectrum. The data can be fitted by a simple model of aExpand
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  • 15
Evidence for changing of cosmic ray composition between 10(17) and 10(18) eV from multicomponent measurements
The average mass composition of cosmic rays with primary energies between 10(17) and 10(18) eV has been studied using a hybrid detector consisting of the High Resolution Fly's Eye (HiRes) prototypeExpand
  • 153
  • 5
  • PDF
Evidence for 1018-eV neutral particles from the direction of Cygnus X-3.
Analysis of the cumulative Fly's Eye data reveals an excess of air showers from the direction of Cygnus X-3 at energies above 0.5 x 10/sup 18/ eV. No point source has previously been identified atExpand
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Observation of the shadows of the Moon and Sun using 100 TeV cosmic rays.
The Chicago Air Shower Array has imaged the shadows of the Moon and Sun and measured the angular diameter of the Moon with cosmic rays having energies above about 100 TeV. The shadow of the Sun showsExpand
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  • 3
Light fragment spectra to upper kinematic limits for 300 MeV proton reactions with Be and Ag.
Single particle inclusive spectra have been measured for the production of several isotopes of H, He, Li, and Be from the interaction of 300 MeV protons with Be and Ag targets. $^{1}$,2H andExpand
  • 16
  • 3
Thomson Thick X-Ray Absorption in a Broad Absorption Line Quasar, PG 0946+301.
  • Mathur, Green, +14 authors Voit
  • Physics, Medicine
  • The Astrophysical journal
  • 2 February 2000
We present a deep ASCA observation of a broad absorption line quasar (BALQSO) PG 0946+301. The source was clearly detected in one of the gas imaging spectrometers, but not in any other detector. IfExpand
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  • 3
  • PDF
Proton propagation in nuclei studied in the (e,e'p) reaction.
  • Garino, Saber, +19 authors Maruyama
  • Physics, Medicine
  • Physical review. C, Nuclear physics
  • 1 February 1992
Proton propagation in nuclei was studied using the ({ital e},{ital e}{prime}{ital p}) reaction in the quasifree region. The coincidence ({ital e},{ital e}{prime}{ital p}) cross sections were measuredExpand
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Observation of new structure in the e+e- cross section above the Upsilon (4S).
Measurements of the e/sup +/e/sup -/ cross section above BB-bar threshold are reported. Structures are observed which could be the UPSILON(5S) and UPSILON(6S) resonances. The masses and widths areExpand
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Inclusive hadron production in upsilon decays and in nonresonant electron-positron annihilation at 10.49 GeV.
We report measurements of single-particle inclusive spectra and two-particle correlations in decays of the UPSILON(1S) resonance and in nonresonant annihilations of electrons and positrons atExpand
  • 48
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Study of the ultrahigh-energy primary-cosmic-ray composition with the MACRO experiment.
  • Ahlen, Ambrósio, +59 authors Liu
  • Physics, Medicine
  • Physical review. D, Particles and fields
  • 1 August 1992
We present the analysis of multiple-muon events collected with one supermodule (1013 h live time) and two supermodules (1195 h live time) of the MACRO detector at Gran Sasso, Italy. Multimuon ratesExpand
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