The ARGO-YBJ detector, located at the Yangbajing Cosmic Ray Laboratory (4300 m a. s. l., Tibet, China), was a "full coverage" (central carpet with an active area of ∼93%) air shower array dedicated to gamma-ray astronomy and cosmic-ray studies. The wide field of view (∼2 sr) and high duty cycle (>86%), made ARGO-YBJ suitable to search for short and unexpected gamma-ray emissions like gamma-ray bursts (GRBs). Between 2007 November 6 and 2013 February 7, 156 satellite-triggered GRBs (24 of them with known redshift) occurred within the ARGO-YBJ field of view (zenith angle θ ≤ 45°). A search for possible emission associated with these GRBs has been made in the two energy ranges 10-100 GeV and 10-1000 GeV. No significant excess has been found in time coincidence with the satellite detections nor in a set of different time windows inside the interval of one hour after the bursts. Taking into account the EBL absorption, upper limits to the energy fluence at a 99% confidence level have been evaluated, with values ranging from ∼10-5erg cm-2to ∼10-1erg cm-2. The Fermi-GBM burst GRB 090902B, with a high-energy photon of 33.4 GeV detected by Fermi-LAT, is discussed in detail.

Bartoli, B., Bernardini, P., Bi, X.J., Cao, Z., Catalanotti, S., Chen, S.Z., et al. (2017). Search for Gamma-Ray Bursts with the ARGO-YBJ Detector in Shower Mode. THE ASTROPHYSICAL JOURNAL, 842(1), 31 [10.3847/1538-4357/aa74bc].

Search for Gamma-Ray Bursts with the ARGO-YBJ Detector in Shower Mode

Mari, S. M.;Mastroianni, S.;Montini, P.;Pistilli, P.;
2017

Abstract

The ARGO-YBJ detector, located at the Yangbajing Cosmic Ray Laboratory (4300 m a. s. l., Tibet, China), was a "full coverage" (central carpet with an active area of ∼93%) air shower array dedicated to gamma-ray astronomy and cosmic-ray studies. The wide field of view (∼2 sr) and high duty cycle (>86%), made ARGO-YBJ suitable to search for short and unexpected gamma-ray emissions like gamma-ray bursts (GRBs). Between 2007 November 6 and 2013 February 7, 156 satellite-triggered GRBs (24 of them with known redshift) occurred within the ARGO-YBJ field of view (zenith angle θ ≤ 45°). A search for possible emission associated with these GRBs has been made in the two energy ranges 10-100 GeV and 10-1000 GeV. No significant excess has been found in time coincidence with the satellite detections nor in a set of different time windows inside the interval of one hour after the bursts. Taking into account the EBL absorption, upper limits to the energy fluence at a 99% confidence level have been evaluated, with values ranging from ∼10-5erg cm-2to ∼10-1erg cm-2. The Fermi-GBM burst GRB 090902B, with a high-energy photon of 33.4 GeV detected by Fermi-LAT, is discussed in detail.
Bartoli, B., Bernardini, P., Bi, X.J., Cao, Z., Catalanotti, S., Chen, S.Z., et al. (2017). Search for Gamma-Ray Bursts with the ARGO-YBJ Detector in Shower Mode. THE ASTROPHYSICAL JOURNAL, 842(1), 31 [10.3847/1538-4357/aa74bc].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/330755
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