{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1871146593027676544.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1093/pasj/50.5.519"}},{"identifier":{"@type":"DOI","@value":"10.48550/arxiv.astro-ph/9809086"}}],"dc:title":[{"@value":"ASCA Observations of the Seyfert 2 Galaxy NGC 7582: An Obscured and Scattered View of the Hidden Nucleus"}],"description":[{"notation":[{"@value":"<jats:p>ASCA observations of the Seyfert 2 galaxy NGC 7582 revealed that it was highly variable on the timescale of ∼ 2×104 s in the hard X-ray band (2–10 keV), while the soft X-ray (0.5–2 keV) flux remained constant during the observations. The normalized variability amplitude in the hard X-ray band was σRMS ≈ 0.3, which is the same level as that of Seyfert 1 galaxies of the same luminosity ∼ 3 × 1042 erg s−1 (2–10 keV). The spectral analysis suggests that this object is seen through an obscuring torus with the thickness of NH ∼ 1.0× 1023 cm−2 . The hard X-rays are an absorbed direct continuum from a hidden Seyfert 1 nucleus, while the soft X-rays are dominated by the scattered central continuum from an extended spatial region. We have an obscured/absorbed and a scattered view of this source as expected from the unification model for Seyfert galaxies. More interestingly, the inferred column density increased by ∼ 4×1022 cm−2 from 1994 to 1996, suggesting a “patchy” torus structure, namely the torus might be composed of many individual clouds. The observed iron-line feature near 6.4 keV with the equivalent width of 170 eV is also consistent with the picture of the transmission of nuclear X-ray continuum through a non-uniform torus.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1891146593027676545","@type":"Researcher","foaf:name":[{"@value":"Tatehiro Mihara"}]},{"@id":"https://cir.nii.ac.jp/crid/1891146593027676547","@type":"Researcher","foaf:name":[{"@value":"Masaru Matsuoka"}]},{"@id":"https://cir.nii.ac.jp/crid/1891146593027676548","@type":"Researcher","foaf:name":[{"@value":"S. J. Xue"}]},{"@id":"https://cir.nii.ac.jp/crid/1420001326232505728","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"50281663"},{"@type":"NRID","@value":"1000050281663"},{"@type":"NRID","@value":"9000403736856"},{"@type":"NRID","@value":"9000401565838"},{"@type":"NRID","@value":"9000297510833"},{"@type":"NRID","@value":"9000409299374"},{"@type":"NRID","@value":"9000401564467"},{"@type":"NRID","@value":"9000260372831"},{"@type":"NRID","@value":"9000022345837"},{"@type":"NRID","@value":"9000363405230"},{"@type":"NRID","@value":"9000107340713"},{"@type":"NRID","@value":"9000363293947"},{"@type":"NRID","@value":"9000401687894"},{"@type":"NRID","@value":"9000401754580"},{"@type":"NRID","@value":"9000332223699"},{"@type":"NRID","@value":"9000403736840"},{"@type":"NRID","@value":"9000283335565"},{"@type":"NRID","@value":"9000345283270"},{"@type":"NRID","@value":"9000345380427"},{"@type":"NRID","@value":"9000332223418"},{"@type":"NRID","@value":"9000021357532"},{"@type":"NRID","@value":"9000023834613"},{"@type":"NRID","@value":"9000388529369"},{"@type":"NRID","@value":"9000261681182"},{"@type":"NRID","@value":"9000363294374"},{"@type":"NRID","@value":"9000402069427"},{"@type":"NRID","@value":"9000022396420"},{"@type":"NRID","@value":"9000345380437"},{"@type":"NRID","@value":"9000258151209"},{"@type":"NRID","@value":"9000364790799"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/cot"}],"foaf:name":[{"@value":"Chiko Otani"}]},{"@id":"https://cir.nii.ac.jp/crid/1891146593027676546","@type":"Researcher","foaf:name":[{"@value":"Massimo Cappi"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00046264"},{"@type":"EISSN","@value":"2053051X"}],"prism:publicationName":[{"@value":"Publications of the Astronomical Society of Japan"}],"dc:publisher":[{"@value":"Oxford University Press (OUP)"}],"prism:publicationDate":"1998-10-01","prism:volume":"50","prism:startingPage":"519","prism:endingPage":"529"},"dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Astrophysics%20(astro-ph)","dc:title":"Astrophysics (astro-ph)"},{"@id":"https://cir.nii.ac.jp/all?q=FOS:%20Physical%20sciences","dc:title":"FOS: Physical sciences"},{"@id":"https://cir.nii.ac.jp/all?q=Astrophysics","dc:title":"Astrophysics"}],"dataSourceIdentifier":[{"@type":"OPENAIRE","@value":"doi_dedup___::c83fb961160a5012584435f4f0958b2e"}]}