SEARCH FOR GAMMA RAY BURSTS WITH THE ARGO-YBJ DETECTOR IN SCALER MODE

Journal Article · Fri Jul 10 00:00:00 EDT 2009 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/699/2/1281; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21333755

Aielli, G; Camarri, P ^[1]; Bacci, C; Bussino, S; Celio, P ^[2]; Barone, F ^[3]; Bartoli, B; Catalanotti, S; Cavaliere, S ^[4]; Bernardini, P; Bleve, C; Calabrese Melcarne, A K ^[5]; Bi, X J; Cao, Z; Chen, S Z ^[6]; Branchini, P; Budano, A ^[7]; Cappa, A ^[8]; Cardarelli, R ^[9]

---

1. Dipartimento di Fisica dell'Universita 'Tor Vergata' di Roma, via della Ricerca Scientifica 1, 00133 Roma (Italy)
2. Dipartimento di Fisica dell'Universita 'Roma Tre' di Roma, via della Vasca Navale 84, 00146 Roma (Italy)
3. Dipartimento di Scienze Farmaceutiche dell'Universita di Salerno, via Ponte Don Melillo, 84084 Fisciano (Italy)
4. Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Complesso Universitario di Monte Sant'Angelo, via Cinthia, 80126 Napoli (Italy)
5. Dipartimento di Fisica dell'Universita del Salento, via per Arnesano, 73100 Lecce (Italy)
6. Key Laboratory of Particle Astrophyics, Institute of High Energy Physics, Chinese Academy of Science, P.O. Box 918, 100049 Beijing (China)
7. Istituto Nazionale di Fisica Nucleare, Sezione di Roma3, via della Vasca Navale 84, 00146 Roma (Italy)
8. Istituto Nazionale di Fisica Nucleare, Sezione di Torino, via P.Giuria 1-10125 Torino (Italy)
9. Istituto Nazionale di Fisica Nucleare, Sezione di Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma (Italy)

We report on the search for gamma ray bursts (GRBs) in the energy range 1-100 GeV in coincidence with the prompt emission detected by satellites using the Astrophysical Radiation with Ground-based Observatory at YangBaJing (ARGO-YBJ) air shower detector. Thanks to its mountain location (Yangbajing, Tibet, People's Republic of China, 4300 m above sea level), active surface ({approx}6700 m{sup 2} of Resistive Plate Chambers), and large field of view ({approx}2 sr, limited only by the atmospheric absorption), the ARGO-YBJ air shower detector is particularly suitable for the detection of unpredictable and short duration events such as GRBs. The search is carried out using the 'single particle technique', i.e., counting all the particles hitting the detector without measurement of the energy and arrival direction of the primary gamma rays. Between 2004 December 17 and 2009 April 7, 81 GRBs detected by satellites occurred within the field of view of ARGO-YBJ (zenith angle {theta} {<=} 45 deg.). It was possible to examine 62 of these for >1 GeV counterpart in the ARGO-YBJ data finding no statistically significant emission. With a lack of detected spectra in this energy range fluence upper limits are profitable, especially when the redshift is known and the correction for the extragalactic absorption can be considered. The obtained fluence upper limits reach values as low as 10{sup -5} erg cm{sup -2} in the 1-100 GeV energy region. Besides this individual search for a higher energy counterpart, a statistical study of the stack of all the GRBs both in time and in phase was made, looking for a common feature in the GRB high-energy emission. No significant signal has been detected.

• OSTI ID: 21333755
• Journal Information: Astrophysical Journal, Vol. 699, Issue 2; Other Information: DOI: 10.1088/0004-637X/699/2/1281; Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION
ASTROPHYSICS
COSMIC GAMMA BURSTS
EMISSION
GAMMA RADIATION
RED SHIFT
SATELLITES
SIGNALS