GT2318+620 - a Galactic Low-Mass X-Ray Binary or a Radio Loud AGN?

Details GT2318+620 - a Galactic Low-Mass X-Ray Binary or a Radio Loud AGN? GT2318+620 - a Galactic Low-Mass X-Ray Binary or a Radio Loud AGN?

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.351m&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

GT2318+620 is a variable radio source exhibiting a jet-like feature on both sides of an unresolved core (Taylor et al., Nature 351, 1991), and it is possibly associated with an UHURU X-ray source. A red 20th magnitude star coincident with the radio core was identified as the optical counterpart. Based on a neutral hydrogen absorption spectrum and the red color Taylor et al. classified the source as a Galactic low-mass X-ray binary. However, our imaging of GT2318+620 with the Nordic Optical Telescope in subarcsecond seeing conditions uncovered a red (V-I = 2.5) resolved source suggesting that the optical counterpart might be the host galaxy of a radio loud AGN. We present the results of recent optical photometry and spectroscopy as well as infrared photometry of GT2318+620 and discuss their implications on the nature of this source.

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