Model independent interpretation of recent CR lepton data after AMS-02

Autor:	Gaggero, Daniele, Maccione, Luca
Rok vydání:	2013
Předmět:	Astrophysics - High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
Zdroj:	JCAP12(2013)011
Druh dokumentu:	Working Paper
DOI:	10.1088/1475-7516/2013/12/011
Popis:	We model the CR leptonic fluxes above 20 GeV in terms of a superposition of a standard and a charge symmetric extra component, which we generically describe as power-laws in momentum. We investigate under these hypotheses the compatibility between AMS-02, Fermi-LAT and PAMELA datasets on positron fraction, electron+positron spectrum and electron spectrum respectively. We find that it is possible to reconcile AMS and Fermi-LAT data within uncertainties, if energy-dependent effects are present in Fermi-LAT systematics. We also study possible deviations from charge symmetry in the extra component and find no compelling evidence for them. Comment: v1: 15 pages, 8 figures. v2: 18 pages, 10 figures. Improved discussion on Fermi-LAT systematic errors. Conclusions unchanged. Accepted by JCAP
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1307.0271 Zobrazit plný text záznamu View this record from Arxiv