Several New Active Galactic Nuclei Among X-ray Sources Detected by INTEGRAL and SWIFT Observatories - AstrophysicsReportar como inadecuado




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Abstract: We present the results of the optical identifications of a set of X-raysources from the all-sky surveys of INTEGRAL and SWIFT observatories. Opticaldata were obtained with Russian-Turkish 1.5-m Telescope RTT150. Nine X-raysources were identified as active galactic nuclei AGNs. Two of them arehosted by nearby, nearly exactly edge-on, spiral galaxies MCG -01-05-047 andNGC 973. One source, IGR J16562-3301, is most probably BL Lac object blazar.Other AGNs are observed as stellar-like nuclei of spiral galaxies, with broademission lines in their spectra.For the majority of our hard X-ray selected AGNs, their hard X-rayluminosities are well-correlated with the luminosities in OIII,5007 opticalemission line. However, the luminosities of some AGNs deviate from thiscorrelation. The fraction of these objects can be as high as 20%. Inparticular, the flux in OIII line turns to be lower in two nearby edge-onspiral galaxies, which can be explained by the extinction in their galacticdisks.



Autor: R. A. Burenin, A. V. Mescheryakov, M. G. Revnivtsev, S. Yu. Sazonov, I. F. Bikmaev, M. N. Pavlinsky, R. A. Sunyaev

Fuente: https://arxiv.org/







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