CSL-1: a chance projection effect or serendipitous discovery of a gravitational lens induced by a cosmic string?

M. Sazhin, G. Longo, J. M. Alcala' +7

CSL-1 (Capodimonte--Sternberg--Lens Candidate, No.1) is an extragalactic double source detected in the OAC-DF (Osservatorio Astronomico di Capodimonte - Deep Field). It can be inte…