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1.

Evidence for a high-energy cosmic-ray spectrum cutoff.

Baltrusaitis RM; Cady R; Cassiday GL; Cooper R; Elbert JW; Gerhardy PR; Ko S; Loh EC; Mizumoto Y; Salamon M; Sokolsky P; Steck D.

Phys Rev Lett ; 54(16): 1875-1877, 1985 Apr 22.

Artículo en Inglés | MEDLINE | ID: mdl-10031163

2.

Evidence for 1018-eV neutral particles from the direction of Cygnus X-3.

Cassiday GL; Cooper R; Dawson BR; Elbert JW; Fick BE; Green KD; Ko S; Liebing DF; Loh EC; Salamon MH; Smith JD; Sokolsky P; Sommers P; Thomas SB.

Phys Rev Lett ; 62(4): 383-386, 1989 Jan 23.

Artículo en Inglés | MEDLINE | ID: mdl-10040219

3.

Evidence for correlated changes in the spectrum and composition of cosmic rays at extremely high energies.

Bird DJ; Corbató SC; Dai HY; Dawson BR; Elbert JW; Gaisser TK; Green KD; Huang MA; Kieda DB; Ko S; Larsen CG; Loh EC; Luo M; Salamon MH; Smith D; Sokolsky P; Sommers P; Stanev T; Tang JK; Thomas SB; Tilav S.

Phys Rev Lett ; 71(21): 3401-3404, 1993 Nov 22.

Artículo en Inglés | MEDLINE | ID: mdl-10054968

4.

Search for gamma rays above 1014 eV from Cygnus X-3 during the June and July 1989 radio outbursts.

Cassiday GL; Ciampa D; Cooper R; Corbato SC; Dawson BR; Elbert JW; Fick BE; Green KD; Kieda DB; Ko S; Kolodziejczak J; Liebing DF; Loh EC; Matthews J; Nitz D; Salamon MH; Sinclair D; Smith JD; Sokolsky P; Thomas SB; Thornton G; Wheeler B; van der Velde JC.

Phys Rev Lett ; 63(21): 2329-2332, 1989 Nov 20.

Artículo en Inglés | MEDLINE | ID: mdl-10040861

5.

First observation of the Greisen-Zatsepin-Kuzmin suppression.

Abbasi, R U; Abu-Zayyad, T; Allen, M; Amman, J F; Archbold, G; Belov, K; Belz, J W; Ben Zvi, S Y; Bergman, D R; Blake, S A; Brusova, O A; Burt, G W; Cannon, C; Cao, Z; Connolly, B C; Deng, W; Fedorova, Y; Finley, C B; Gray, R C; Hanlon, W F; Hoffman, C M; Holzscheiter, M H; Hughes, G; Hüntemeyer, P; Jones, B F; Jui, C C H; Kim, K; Kirn, M A; Loh, E C; Maestas, M M; Manago, N; Marek, L J; Martens, K; Matthews, J A J; Matthews, J N; Moore, S A; O'Neill, A; Painter, C A; Perera, L; Reil, K; Riehle, R; Roberts, M; Rodriguez, D; Sasaki, N; Schnetzer, S R; Scott, L M; Sinnis, G; Smith, J D; Sokolsky, P; Song, C.

Phys Rev Lett ; 100(10): 101101, 2008 Mar 14.

Artículo en Inglés | MEDLINE | ID: mdl-18352170

RESUMEN

The High Resolution Fly's Eye (HiRes) experiment has observed the Greisen-Zatsepin-Kuzmin suppression (called the GZK cutoff) with a statistical significance of five standard deviations. HiRes' measurement of the flux of ultrahigh energy cosmic rays shows a sharp suppression at an energy of 6 x 10(19) eV, consistent with the expected cutoff energy. We observe the ankle of the cosmic-ray energy spectrum as well, at an energy of 4 x 10(18) eV. We describe the experiment, data collection, and analysis and estimate the systematic uncertainties. The results are presented and the calculation of the statistical significance of our observation is described.

6.

Limits on deeply penetrating particles in the >10(17) eV cosmic-ray flux.

Baltrusaitis RM; Cassiday GL; Elbert JW; Gerhardy PR; Loh EC; Mizumoto Y; Sokolsky P; Steck D.

Phys Rev D Part Fields ; 31(9): 2192-2198, 1985 May 01.

Artículo en Inglés | MEDLINE | ID: mdl-9955950

7.

Search for compact sources of cosmic photons above 200 TeV.

Ciampa DP; Kolodziejczak J; Green KD; Matthews J; Nitz D; Sinclair D; Thornton G; van der Velde JC; Cassiday GL; Cooper R; Corbato SC; Dawson BR; Elbert JW; Fick BE; Kieda DB; Ko S; Liebing DF; Loh EC; Salamon MH; Smith JD; Sokolsky P; Thomas SB; Wheeler B.

Phys Rev D Part Fields ; 46(8): 3248-3255, 1992 Oct 15.

Artículo en Inglés | MEDLINE | ID: mdl-10015269

8.

Cosmic-ray composition around 10(1)8 eV.

Gaisser TK; Stanev T; Tilav S; Corbato SC; Dai HY; Dawson BR; Elbert JW; Emerson B; Kieda DB; Luo M; Ko S; Larsen C; Loh EC; Salamon MH; Smith JD; Sokolsky P; Sommers P; Tang J; Thomas SB; Bird DJ.

Phys Rev D Part Fields ; 47(5): 1919-1932, 1993 Mar 01.

Artículo en Inglés | MEDLINE | ID: mdl-10015774

9.

Search for >200 TeV photons from Cygnus X-3 in 1988 and 1989.

Ciampa D; Green K; Kolodziejczak J; Matthews J; Nitz D; Sinclair D; Thornton G; van der Velde JC; Cassiday GL; Cooper R; Corbato SC; Dawson BR; Elbert JW; Fick BE; Kieda DB; Ko S; Liebing DF; Loh EC; Salamon MH; Smith JD; Sokolsky P; Thomas SB; Wheeler B.

Phys Rev D Part Fields ; 42(2): 281-288, 1990 Jul 15.

Artículo en Inglés | MEDLINE | ID: mdl-10012844

RESUMEN

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