7-11 July 2014
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=16&confId=34"><font color=#0000ff>SAIP2014 Proceedings published on 17 April 2015</font></a>

Neutrino Events at IceCube and the Fermi Bubbles

9 Jul 2014, 14:00
D Les 203

D Les 203

Oral Presentation Track D1 - Astrophysics Astro


Dr Lili Yang (University of Nova Gorica)

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The IceCube Collaboration recently announced twenty-eight events were observed with energies above ~ 30 TeV, more than expected from atmospheric backgrounds. We discuss the detectability of the Fermi Bubbles at IceCube and show that up to 4 − 5 of the 28 events could originate from the Fermi Bubbles (FB). If the observed gamma rays from the FB are created due to the baryonic mechanism, high-energy (> GeV) neutrinos should be emitted as a counterpart. These neutrinos should be detectable as shower or track-like events at a Km3 neutrino detector. For a hard primary cosmic-ray proton spectrum E-2.1 and cutoff energy at or above 10 PeV, the Fermi Bubble flux substantially exceeds the atmospheric backgrounds. For a steeper spectrum E-2.3 and/or lower cutoff energy, to observe the neutrino flux at high significance, longer running time will be required.

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Main supervisor (name and email)<br>and his / her institution

Cecilia Lunardini, Cecilia.Lunardini@asu.edu, Arizona State University

Primary authors

Prof. Cecilia Lunardini (Arizona State University) Dr Lili Yang (University of Nova Gorica) Prof. Soebur Razzaque (University of Johannesburg)

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