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Multiwavelength Study Of Two Unidentified Gamma-ray Sources

Nicola La Palombara·Patrizia Caraveo·Roberto Mignani·Evanthia Hatziminaoglou·Giovanni F. Bignami·Mischa Schirmer
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Abstract

Most counterparts of the identified low-latitude gamma-ray sources are Isolated Neutron Stars (INSs). They are characterized by an extremely high value of the X/optical flux ratio, therefore a systematic X-ray/optical coverage of the fields of unidentified low-latitude gamma-ray sources is the best way to unveil possible INS counterparts. Since the low-latitude sources are heavily affected by the interstellar absorption in both the X-ray and optical bands, we decided to apply the above strategy to two middle-latitude EGRET sources, which could belong to a local galactic population: 3EG J0616-3310 and 3EG J1249-8330. Here we report on the global X-ray characterisation of about 300 objects, on their candidate optical counterparts and on the preliminary results of their identification.

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Nicola La Palombara, Patrizia Caraveo, Roberto Mignani, Evanthia Hatziminaoglou, Giovanni F. Bignami, Mischa Schirmer. 2004-08-26. Multiwavelength Study Of Two Unidentified Gamma-ray Sources. https://doi.org/10.1007/s10509-005-7673-z

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