Confirmation of Intervening Filaments of Galaxies at the Redshifts of Chandra WHIM Absorption Features

الأصل · EN

We report the a posteriori confirmation of two large-scale filaments along the sight-line of the blazar 1ES 1553+113, which correspond to Warm-Hot Intergalactic Medium (WHIM) absorption features in the X-ray and far ultraviolet. We use the WISE-SuperCOSMOS photometric catalog to map the cosmic-web in the direction of the blazar, and find significant filaments at redshifts of z=0.23±0.02 and z=0.31±0.02, which roughly align with the absorption redshifts. A third X-ray absorption feature at zₓ=0.133 did not have any corresponding structures in the photometric catalog.