Exact gravitational lensing by cosmic strings with junctions
Abstract
Description
We point out that the results by Brandenberger et al. in Phys.Rev.D77:083502(2008) that the geometry around the straight cosmic strings with stationary junctions is flat to linear order in the string tension can be immediately extended to any order.
5 pages, accepted for publication in PRD
5 pages, accepted for publication in PRD