{"paper":{"title":"Flares, wind and nebulae: the 2015 December mini-outburst of V404 Cygni","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. M. M. Scaife, C. Rumsey, D. J. Titterington, D. Mata S\\'anchez, F. Jim\\'enez-Ibarra, G. Ponti, J. Casares, J. Hickish, K. J. B. Grainge, K. Mooley, L. Hardy, M. Armas Padilla, N. Razavi-Ghods, P. A. Charles, P. F. Scott, P. Gandhi, R. P. Fender, R. W. Wilson, S. Carey, S. E. Motta, S. P. Littlefair, T. Butterley, T. Mu\\~noz-Darias, V. S. Dhillon, Y. C. Perrott","submitted_at":"2016-10-26T20:00:04Z","abstract_excerpt":"After more than 26 years in quiescence, the black hole transient V404 Cyg went into a luminous outburst in June 2015, and additional activity was detected in late December of the same year. Here, we present an optical spectroscopic follow-up of the December mini-outburst, together with X-ray, optical and radio monitoring that spanned more than a month. Strong flares with gradually increasing intensity are detected in the three spectral ranges during the ~10 days following the Swift trigger. Our optical spectra reveal the presence of a fast outflowing wind, as implied by the detection of a P-Cy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.08517","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"}