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arXiv · 1206.3873

Sub-arcsecond radio and optical observations of the likely counterpart to the gamma-ray source 2FGL J2056.7+4939

J. Martí·P. L. Luque-Escamilla·E. Sánchez-Ayaso·A. J. Muñoz-Arjonilla
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Abstract

We have searched and reviewed all multi- wavelength data available for the region towards the gamma-ray source 2FGL J2056.7+4939 in order to con- strain its possible counterpart at lower energies. As a result, only a point-like optical/infrared source with flat-spectrum radio emission is found to be consistent with all X-ray and gamma-ray error circles. Its struc- ture is marginally resolved at radio wavelengths at the sub-arcsecond level. An extragalactic scenario appears to be the most likely interpretation for this object.

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J. Martí, P. L. Luque-Escamilla, E. Sánchez-Ayaso, A. J. Muñoz-Arjonilla. 2012-06-18. Sub-arcsecond radio and optical observations of the likely counterpart to the gamma-ray source 2FGL J2056.7+4939. https://doi.org/10.1007/s10509-012-1030-9

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