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The true nature of CSL-1

M. V. Sazhin·M. Capaccioli·G. Longo·M. Paolillo·O. S. Khovanskaya·N. A. Grogin·E. J. Schreier·G. Covone
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Abstract

On January 12 2006, the Hubble Space Telescope observed the peculiar double extragalactic object CSL-1, suspected to be the result of gravitational lensing by a cosmic string. The high resolution image shows that the object is actually a pair of interacting giant elliptical galaxies. In spite of the weird similarities of the energy and light distributions and of the radial velocities of the two components, CSL-1 is not the lensing of an elliptical galaxy by a cosmic string.

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M. V. Sazhin, M. Capaccioli, G. Longo, M. Paolillo, O. S. Khovanskaya, N. A. Grogin, E. J. Schreier, G. Covone. 2006-02-02. The true nature of CSL-1. https://arxiv.org/abs/astro-ph/0601494

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