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arXiv · 1711.04616

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

Shea Brown·Philip Kaaret·Anna Zajczyk
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Abstract

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 $z=0.23\pm0.02$ and $z=0.31\pm0.02$, which roughly align with the absorption redshifts. A third X-ray absorption feature at $z_X=0.133$ did not have any corresponding structures in the photometric catalog.

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Shea Brown, Philip Kaaret, Anna Zajczyk. 2017-11-13. Confirmation of Intervening Filaments of Galaxies at the Redshifts of $Chandra$ WHIM Absorption Features. https://arxiv.org/abs/1711.04616

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