Search for high-energy neutrinos from GRB130427A with the ANTARES neutrino telescope

6th Young Researcher Meeting, L'Aquila 2015

Celli, Silvia^1,2

La Sapienza University of Rome, INFN, Piazzale Aldo Moro 5, Rome

00185, Italy^1

Gran Sasso Science Institute, Viale Francesco Crispi 7, L'Aquila

67100, Italy^2

关键词: High energy neutrinos;    Maximum likelihood ratios;    Neutrino emission;    Neutrino telescopes;    Northern Hemispheres;    Numerical calculation;    Time-dependent analysis;    Time-dependent spectrum;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/689/1/012011/pdf
DOI  :  10.1088/1742-6596/689/1/012011

来源: IOP

【 摘 要 】

ANTARES is the first deep under-sea high-energy astrophysical neutrino telescope, in operation since 2008, in the Northern Hemisphere. In the light of a multi-messenger approach, one of the most ever intense (photon fluence Fγ10-3erg/cm2) and close (redshift z = 0.34) transient γ-source, GRB130427A, is considered in the ANTARES physics program for a co-incident search for photons and high-energy neutrinos. The first time-dependent analysis on GRBs neutrino emissions has been performed for this source: Konus-Wind parameters of the γ time-dependent spectrum are used to predict the expected neutrino flux from each peak of the burst, through the numerical calculation code NeuCosmA. An extended maximum likelihood ratio search is performed in order to maximize the discovery probability of prompt neutrinos from the burst: at the end, ANTARES sensitivity to this source is evaluated to be E2Φv∼ 1 -10 GeV/cm2in the energy range from 2 x 105GeV to 2 x 107GeV.