{"paper":{"title":"A New, Faint Population of X-ray Transients","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Comastri, A. Tolstov, B. Luo, C. Vignali, D. A. Kann, D. M. Alexander, D. P. Schneider, E. Treister, F. E. Bauer, F. Forster, G. Yang, J. Wang, K. Maeda, K. Nomoto, K. Schawinski, M. Paolillo, M. Tanaka, N. Tominaga, O. Shemmer, P. Ranalli, P. Tozzi, R. Gilli, S. Schulze, W. N. Brandt, Y. Xue","submitted_at":"2017-02-14T23:37:20Z","abstract_excerpt":"We report on the detection of a remarkable new fast high-energy transient found in the Chandra Deep Field-South, robustly associated with a faint ($m_{\\rm R}=27.5$ mag, $z_{\\rm ph}$$\\sim$2.2) host in the CANDELS survey. The X-ray event is comprised of 115$^{+12}_{-11}$ net 0.3-7.0 keV counts, with a light curve characterised by a $\\approx$100 s rise time, a peak 0.3-10 keV flux of $\\approx$5$\\times$10$^{-12}$ erg s$^{-1}$ cm$^{-2}$, and a power-law decay time slope of $-1.53\\pm0.27$. The average spectral slope is $\\Gamma=1.43^{+0.23}_{-0.13}$, with no clear spectral variations. The \\hbox{X-ray"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.04422","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"}