{"paper":{"title":"Pan-STARRS1 Discovery of Two Ultra-Luminous Supernovae at z ~ 0.9","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. M. Soderberg, A. Rest, A. Riess, C. W. Stubbs, D. C. Martin, E. A. Magnier, E. Berger, G. Narayan, H. Flewelling, I. Czekala, J. D. Neill, J. L. Tonry, J. S. Morgan, K. C. Chambers, K. C. Roth, K. Forster, L. Chomiuk, M. E. Huber, N. E. Sanders, N. Kaiser, P. A. Price, R. A. Chevalier, R. Chornock, R. J. Foley, R. J. Wainscoat, R. P. Kirshner, R. P. Kudritzki, S. A. Rodney, S. Gezari, S. J. Smartt, W. M. Wood-Vasey, W. S. Burgett","submitted_at":"2011-07-18T20:00:00Z","abstract_excerpt":"We present the discovery of two ultra-luminous supernovae (SNe) at z ~ 0.9 with the Pan-STARRS1 Medium-Deep Survey. These SNe, PS1-10ky and PS1-10awh, are amongst the most luminous SNe ever discovered, comparable to the unusual transients SN 2005ap and SCP 06F6. Like SN 2005ap and SCP 06F6, they show characteristic high luminosities (M_bol ~ -22.5 mag), blue spectra with a few broad absorption lines, and no evidence for H or He. We have constructed a full multi-color light curve sensitive to the peak of the spectral energy distribution in the rest-frame ultraviolet, and we have obtained time-s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.3552","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":""},"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"}