Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
SEARCH FOR GAMMA-RAY BURSTS AT PHOTON ENERGIES E-GREATER-THAN-OR-EQUAL-TO-10 GEV AND E-GREATER-THAN-OR-EQUAL-TO-80 TEV
Autore:
AGLIETTA M; ALESSANDRO B; ANTONIOLI P; ARNEODO F; BERGAMASCO L; BERTAINA M; CASTELLINA A; CASTAGNOLI C; CHIAVASSA A; CASTAGNOLI GC; PIAZZOLI BD; DISCIASCIO G; FULGIONE W; GALEOTTI P; GHIA PL; GRANELLA R; IACOVACCI M; MANNOCCHI G; MELAGRANA C; SILVA NM; MORELLO C; NAVARRA G; RICCATI L; SAAVEDRA O; TRINCHERO GC; VALLANIA P; VERNETTO S; VIGORITO C;
Indirizzi:
CNR,IST COSMOGEOFIS,CORSO FIUME 4 I-10133 TURIN ITALY IST NAZL FIS NUCL I-10125 TURIN ITALY IST NAZL FIS NUCL I-40126 BOLOGNA ITALY UNIV AQUILA,DIPARTIMENTO FIS I-67100 LAQUILA ITALY IST NAZL FIS NUCL,LAB NAZL GRAN SASSO I-67010 ASSERGI AQ ITALY UNIV TURIN,DIPARTIMENTO FIS GEN I-10125 TURIN ITALY UNIV NAPLES,DIPARTIMENTO SCI FISICHE I-80125 NAPLES ITALY IST NAZL FIS NUCL I-80125 NAPLES ITALY UNIV ESTADUAL CAMPINAS,INST FIS BR-13081 CAMPINAS SP BRAZIL
Titolo Testata:
The Astrophysical journal
fascicolo: 1, volume: 469, anno: 1996,
parte:, 1
pagine: 305 - 310
SICI:
0004-637X(1996)469:1<305:SFGBAP>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
TOP;
Keywords:
GAMMA RAYS, BURSTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
M. Aglietta et al., "SEARCH FOR GAMMA-RAY BURSTS AT PHOTON ENERGIES E-GREATER-THAN-OR-EQUAL-TO-10 GEV AND E-GREATER-THAN-OR-EQUAL-TO-80 TEV", The Astrophysical journal, 469(1), 1996, pp. 305-310

Abstract

The EAS-TOP extensive air shower array has been operating since 1992 in the search for gamma-ray bursts at primary energies E(1) greater than or equal to 10 GeV and E(2) greater than or equal to 80 TeV. The study is performed by searching for short transients in the cosmic-ray intensity in the single particle (E(1)) and extensive air shower (E(2))counting rates at mountain altitude (2005 m above sea level). We discuss the method and the results obtained both in sky survey and in correlation with BATSE events. In both energy ranges, the observed fluctuations in the event rate obtained in the sky survey during similar to 800 days of live time are compatible with the statistical fluctuations of the cosmic-ray background. A single candidate of time duration Delta t similar to 2 s and energy fluence F(10 < E < 100 GeV) = 1.7 x 10(-4)/(cos theta)(10.5) ergs cm(-2) (where theta is the unknown zenith angle) has been observed on 1992 July 15 at 13:22:26 UT in the energy range E(1) greater than or equal to 10 GeV with significance 10.6 and 20.1 sigma in two measurement channels. In the analysis made in correlation with similar to 50 events detected by BATSE, no burst candidate was found in time coincidence or in the 2 hr interval, around the BATSE detection time. The following ranges of upper limits F-max to the energy fluence in the time interval Delta t(90) in which BATSE detected 90% of the counts are obtained: F-max = 2.3 x 10(-5)-7.4 x 10(-3) ergs cm(-2) (10 < E < 100 GeV) F-max = 1.6 x 10(-6)-3.3 x 10(-5) ergs cm(-2)(100 < E < 1000 TeV).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/11/20 alle ore 20:29:59