{"paper":{"title":"Chandra Spectral and Timing Analysis of Sgr A*'s Brightest X-ray Flares","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Brayden Mon (McGill/MSI), Craig Heinke (U Alberta), Daryl Haggard (McGill/MSI), Farhad Yusef-Zadeh (Northwestern U/CIERA), Francesco Coti Zelati (CSIC/IEEC), Fred Baganoff (MIT Kavli), Gabriele Ponti (INAF-OA-Brera/Max-Planck), Geoffrey C. Bower (ASIAA), Jason Dexter (Max-Planck/JILA/U Colorado), Joern Wilms (U Erlangen-Nuremberg), Joseph Neilsen (Villanova), Lia R. Corrales (U Michigan), Mark R. Morris (UCLA), Melania Nynka (MIT Kavli/McGill/MSI), Michael Nowak (Wash U), Nanda Rea (CSIC/IEEC), Nathalie Degenaar (U Amsterdam), Noelia de la Cruz Hernandez (McGill/MSI), P. Chris Fragile (Charleston), Sera Markoff (U Amsterdam/GRAPPA)","submitted_at":"2019-08-05T18:00:15Z","abstract_excerpt":"We analyze the two brightest Chandra X-ray flares detected from Sagittarius A*, with peak luminosities more than 600 x and 245 x greater than the quiescent X-ray emission. The brightest flare has a distinctive double-peaked morphology --- it lasts 5.7 ksec ($\\sim 2$ hours), with a rapid rise time of 1500 sec and a decay time of 2500 sec. The second flare lasts 3.4 ksec, with rise and decay times of 1700 sec and 1400 sec. These luminous flares are significantly harder than quiescence: the first has a power law spectral index $\\Gamma = 2.06\\pm 0.14$ and the second has $\\Gamma = 2.03\\pm 0.27$, co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01781","kind":"arxiv","version":2},"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/1908.01781/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"}