July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Study of the diffuse gamma ray emission from the Galactic plane with ARGO-YBJ

Jul 30, 2015, 11:00 AM
15m
Amazon (World Forum)

Amazon

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution GA-EX Parallel GA02 GAL

Speaker

Dr Lingling Ma (Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences,)

Description

The data recorded by ARGO-YBJ in more than 5 years have been analyzed todetermine the diffuse gamma ray emission from the Galactic plane. The spatial distribution of the diffuse gamma rays and their energy spectra at Galactic longitudes 25^o < l <100^o o and Galactic latitudes |b|<5^o have been studied. The regions with 40^o< l <100^o and 65^o < l <85^o have been focused, where Milagro observed an excess with respect to the predictions of current models. The energy range investigated covers from ~350 GeV to ~2TeV, connecting the region explored by Fermi-LAT with the multi-TeV energies studied by Milagro. Great care has been taken in masking the TeV point sources observed by ARGO-YBJ and other experiments. Our results are consistent with the predictions of the Fermi model and do not show any excess as observed by Milagro.
Collaboration ARGO-YBJ
Registration number following "ICRC2015-I/" 420

Primary author

Dr Lingling Ma (Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences,)

Co-authors

Prof. Benedetto Dettorre (Dipartimento di Fisica dell'Universita di Napoli \Federico II", Complesso Universitario di Monte) Dr Tristano Girolamo (Dipartimento di Fisica dell'Universita di Napoli \Federico II", Complesso Universitario di Monte)

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