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

Unexpected gamma-ray signal in the vicinity of 1ES 0229+200

1 Aug 2015, 15:30
1h
Mississippi Foyer (World Forum)

Mississippi Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 64
Poster contribution GA-EX Poster 2 GA

Speaker

Stanislav Stefanik (Institute of Particle and Nuclear Physic, Charles University in Prague)

Description

We report on an unidentified gamma-ray signal found in the region around the BL Lac object 1ES 0229+200. It was recognized serendipitously in our analysis of 6.2 years of Fermi-LAT data at a distance less than $3^\circ$ away from the blazar. The observed excess of counts manifests itself as an unexpected local maximum in the test statistic map. Although several Fermi-LAT sources have been identified in this area we were not able to link them to the position of this residual signal. A clear association with sources visible in other wavebands was not successful either. We briefly discuss characteristics of this unresolved phenomenon. Our results suggest a steep energy spectrum and a point-like nature of this candidate gamma-ray emitter.
Registration number following "ICRC2015-I/" 204
Collaboration -- not specified --

Primary authors

Stanislav Stefanik (Institute of Particle and Nuclear Physic, Charles University in Prague) dalibor nosek (Charles University)

Presentation materials