{"paper":{"title":"A broadband X-ray view of NGC4945","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2), Bologna, E; (3) Universita' degli Studi \"Roma 3\", ESA, G.Matt (3), I), I; (4) Pennsylvania State University, I; (6) ITESRE/CNR, L.A.Antonelli (5), L.Bassani (6) ((1) Astrophyisics Division, M.Guainazzi (1, Monteporzio Catone, NL; (2) XMM SOC, Noordwijk, P.Barr (1), SSD of ESA, USA; (5) Osservatorio di Roma, Villafranca del Castillo, VILSPA, W.N.Brandt (4)","submitted_at":"2000-01-31T15:21:08Z","abstract_excerpt":"We present the results of a BeppoSAX observation of the nearby spiral galaxy NGC4945 in the 0.1-200 keV energy band. The nuclear X-ray emission emerges above ~7 keV, through an absorber with column density N_H ~ a few 10^24/cm/cm. Its remarkable variability (doubling/halving timescale ~10^4 s) is not associated with any appreciable spectral changes, ruling out variations of the interposed absorber or changes in the primary continuum shape. The intense iron K-ALPHA fluorescent emission line is likely to be produced by the same nuclear absorbing matter. Our estimate of the intrinsic nuclear powe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0001528","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0001528/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}