{"paper":{"title":"Two Peculiar Fast Transients in a Strongly Lensed Host Galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. G. Riess, A. Hoag, A. Molino, A. V. Filippenko, A. Zitrin, B. J. Weiner, B. Mobasher, C. Grillo, C. McCully, G. B. Caminha, G. Brammer, G. Chirivi, I. Balestra, J. Hjorth, J. M. Diego, J. Richard, J. Selsing, K. B. Schmidt, K. Sharon, L.-G. Strolger, L. L. R. Williams, M. Bradac, M. Jauzac, M. Oguri, O. Graur, P. L. Kelly, P. Rosati, R. J. Foley, R. Kawamata, S. A. Rodney, S. Hemmati, S. H. Suyu, S. W. Jha, T. Broadhurst, T. Treu","submitted_at":"2017-07-08T12:54:10Z","abstract_excerpt":"A massive galaxy cluster can serve as a magnifying glass for distant stellar populations, with strong gravitational lensing exposing details in the lensed background galaxies that would otherwise be undetectable. The MACS J0416.1-2403 cluster (hereafter MACS0416) is one of the most efficient lenses in the sky, and in 2014 it was observed with high-cadence imaging from the Hubble Space Telescope (HST). Here we describe two unusual transient events that appeared behind MACS0416 in a strongly lensed galaxy at redshift $z = 1.0054 \\pm 0.0002$. These transients---designated HFF14Spo-NW and HFF14Spo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02434","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"}