Improving blazar redshift constraints with the edge of the Ly$\alpha$ forest: 1ES 1553+113 and implications for observations of the WHIM

J. Dorigo Jones, S. D. Johnson, Sowgat Muzahid +6

Blazars are some of the brightest UV and X-ray sources in the sky and are valuable probes of the elusive warm-hot intergalactic medium (WHIM; $T\simeq 10^5-10^7$ K). However, man…