{"paper":{"title":"The close T Tauri binary system V4046 Sgr: Rotationally modulated X-ray emission from accretion shocks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(10) California Institute of Technology, (11) University of Vienna, (13) Center for Imaging Science, 2), (2) INAF - Osservatorio Astronomico di Palermo, (3) Institut d'Astrophysique de Paris, (4) MIT, (5) Observatoire de Paris, (6) ISDC Data Center for Astrophysics, 7), (7) Observatoire de Gen\\`eve, (8) UJF-Grenoble 1 / CNRS-INSU, (9) IRAP-UMR 5277, A. Maggio (2), Austria (12) ESO, CA, Cambridge, C. Argiroffi (1, CNRS, Department of Astronomy, D. P. Huenemoerder (4), E. Alecian (5), F. Damiani (2), France, G. A. J. Hussain (12), Garching bei M\\\"unchen, Germany, G. G. Sacco (13) ((1) Dip. di Fisica, Grenoble, Institut de Plan\\'etologie et d'Astrophysique de Grenoble (IPAG), Italy, J. Bouvier (8), J.-F. Donati (9), J. H. Kastner (13), Kavli Institute for Astrophysics, MA, M. Audard (6, Meudon Principal Cedex, M. G\\\"udel (11), NY, Palermo, Paris, Pasadena, Rochester, Rochester Institute of Technology, S. G. Gregory (10), Space Research, Switzerland, T. Montmerle (3), Toulouse, Univ. de Toulouse, Univ. di Palermo, University of Geneva, USA, USA), Versoix, Vienna","submitted_at":"2012-04-04T15:00:03Z","abstract_excerpt":"We report initial results from a quasi-simultaneous X-ray/optical observing campaign targeting V4046 Sgr, a close, synchronous-rotating classical T Tauri star (CTTS) binary in which both components are actively accreting. V4046 Sgr is a strong X-ray source, with the X-rays mainly arising from high-density (n_e ~ 10^(11-12) cm^(-3)) plasma at temperatures of 3-4 MK. Our multiwavelength campaign aims to simultaneously constrain the properties of this X-ray emitting plasma, the large scale magnetic field, and the accretion geometry. In this paper, we present key results obtained via time-resolved"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.0964","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"}