Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-02-08
Mon.Not.Roy.Astron.Soc. 324 (2001) 772
Astronomy and Astrophysics
Astrophysics
8 pages, 5 figures, accepted for publication in MNRAS
Scientific paper
10.1046/j.1365-8711.2001.04397.x
The EGRET telescope has repeatedly observed 3EG J1835+5918 as a bright and steady source of high-energy gamma-ray radiation which has not yet been indentified. EGRET data from CGRO observation cycle 1 to 7 have been reanalysed above 100 MeV and above 1 GeV. The gamma-ray source location represents the latest and probably final positional assessment based on EGRET data. We especially adress the question of flux variability and spectral variability. The results of a X-ray/optical identification campaign towards 3EG J1835+5918 are given. The one object which might be associated with the gamma-ray source 3EG J1835+5918 has the characteristics of an isolated neutron star and possible of a radio-quiet pulsar.
Brazier K. T. S.
Carraminana Alberto
Kanbach Gottfried
Nolan Patrick Lee
Reimer Olaf
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