{"paper":{"title":"Search for Oxygen Emission from Warm-Hot Intergalactic Medium around A2218 with Suzaku","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Grzegorz M. Madejski (8), John P. Hughes (7), J. Patrick Henry (3), Kazuhisa Mitsuda (1), Keith A. Arnaud (9) ((1) ISAS/JAXA (2) Tokyo Metropolitan U. (3) U. Hawaii (4) Osaka U. (5) Tokyo U. Science (6) MIT (7) Rutgers U. (8) SLAC (9) NASA/GSFC), Kiyoshi Hayashida (4), Kyoko Matsushita (5), Mark W. Bautz (6), Noriaki Tawa (4), Noriko Y. Yamasaki (1), Richard L. Kelley (9), Ryuichi Fujimoto (1), Takaya Ohashi (2), Takayuki Tamura (1), Yoh Takei (1)","submitted_at":"2006-08-03T04:04:34Z","abstract_excerpt":"We searched for redshifted O emission lines from the possible warm-hot intergalactic medium (WHIM) surrounding the cluster of galaxies A2218 at z=0.1756 using the XIS instrument on Suzaku. This cluster is thought to have an elongated structure along the line of sight based on previous studies. We studied systematic uncertainties in the spectrum of the Galactic emission and in the soft X-ray response of the detectors due to the contamination building up on the XIS filters. We detected no significant redshifted O lines, and set a tight constraint on the intensity with upper limits for the surfac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0608072","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}