Speaker
Dr
Rosa Coniglione
(INFN- Laboratori Nazionali del Sud)
Description
A recent analysis of the Fermi data [1] provides evidence of the emission of high energy gamma rays (up to 100 GeV) with a high intensity E-2 spectrum. This emission was detected as originating from two large areas around the Galactic center, spanning 50° above and below the Galactic center and 40° in longitude, with no spacial evidence of variation both in the spectrum shape and in the intensity. Currently, all the observed features of the Fermi bubbles are not fully explained by a leptonic mechanism and an hadronic mechanism has been proposed [2]. The possible origin of high energy gammas from an hadronic mechanism makes these bubbles promising sources for high energy neutrino emission.
KM3NeT [3] is a consortium with the aim to develop a deep-sea research infrastructure hosting a multi-cubic-kilometer scale high energy neutrino detector in the Mediterranean sea. The location of the detector makes possible the survey of the Galactic center and of a large area surrounding the center and makes this future detector the ideal instrument for the observation of neutrino from Fermi bubbles.
In this work some predictions, based on Monte Carlo simulations and on the high energy gamma observations, regarding the possible detection of high energy neutrino from Fermi bubbles will be presented.
[1] Meng Su et al., Astroph. Journal 724 :1044-1082, 2010
[2] R.M. Crocker and F. Aharonian Phys. Rev. Lett. 106 (2011)101102
[3] KM3NeT web page http://www.km3net.org/home.php
Author
Dr
Rosa Coniglione
(INFN- Laboratori Nazionali del Sud)
