Recent observational studies using stacked survey data and deep exposures of galaxy cluster outskirts have detected soft X-ray excesses associated with optically identified filaments.
HU Dan Zajaček Michal Werner Norbert Grossová Romana Jáchym Pavel Roberts Ian D Ignesti Alessandro Kenney D P Kenney Plšek Tomáš Riffald Souza Breuer Jean-Paul Bernhard Shimwell Timothy Tasse Cyril ZHU Zhenghao WU Linhui