Astrophysical point-like neutrino sources, like Gamma-Ray Bursts (GRBs), are one of the main targets for neutrino telescopes, since they are among the best candidates for Ultra-High-Energy Cosmic Ray (UHECR) acceleration. From the interaction between the accelerated protons and the intense radiation fields of the source jet, charged mesons are produced, which then decay into neutrinos. The methods and the results of a search for high-energy neutrinos in spatial and temporal correlation with the detected gamma-ray emission are presented for four bright GRBs observed between 2008 and 2013: a time-dependent analysis, optimised for each flare of the selected bursts, is performed to predict detailed neutrino spectra. The internal shock scenario of the fireball model is investigated, relying on the neutrino spectra computed through the numerical code NeuCosmA. The analysis is optimized on a per burst basis, through the maximization of the signal discovery probability. Since no events in ANTARES data passed the optimised cuts, 90% C.L. upper limits are derived on the expected neutrino fluences.

A time-dependent search for high-energy neutrinos from bright GRBs with ANTARES / Celli, S. - In: EPJ WEB OF CONFERENCES. - ISSN 2100-014X. - 136:(2017). (Intervento presentato al convegno RICAP16, 6TH ROMA INTERNATIONAL CONFERENCE ON ASTROPARTICLE PHYSICS tenutosi a Roma, Italia) [10.1051/epjconf/201713604006].

A time-dependent search for high-energy neutrinos from bright GRBs with ANTARES

Celli, S
Primo
Formal Analysis
2017

Abstract

Astrophysical point-like neutrino sources, like Gamma-Ray Bursts (GRBs), are one of the main targets for neutrino telescopes, since they are among the best candidates for Ultra-High-Energy Cosmic Ray (UHECR) acceleration. From the interaction between the accelerated protons and the intense radiation fields of the source jet, charged mesons are produced, which then decay into neutrinos. The methods and the results of a search for high-energy neutrinos in spatial and temporal correlation with the detected gamma-ray emission are presented for four bright GRBs observed between 2008 and 2013: a time-dependent analysis, optimised for each flare of the selected bursts, is performed to predict detailed neutrino spectra. The internal shock scenario of the fireball model is investigated, relying on the neutrino spectra computed through the numerical code NeuCosmA. The analysis is optimized on a per burst basis, through the maximization of the signal discovery probability. Since no events in ANTARES data passed the optimised cuts, 90% C.L. upper limits are derived on the expected neutrino fluences.
2017
RICAP16, 6TH ROMA INTERNATIONAL CONFERENCE ON ASTROPARTICLE PHYSICS
Neutrino telescopes; ANTARES; transiente sources; gamma ray bursts
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
A time-dependent search for high-energy neutrinos from bright GRBs with ANTARES / Celli, S. - In: EPJ WEB OF CONFERENCES. - ISSN 2100-014X. - 136:(2017). (Intervento presentato al convegno RICAP16, 6TH ROMA INTERNATIONAL CONFERENCE ON ASTROPARTICLE PHYSICS tenutosi a Roma, Italia) [10.1051/epjconf/201713604006].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1368901
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