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The Unusually Luminous Extragalactic Nova SN 2010U
Ian Czekala, E. Berger, R. Chornock +10
We present observations of the unusual optical transient SN 2010U, including spectra taken 1.03 days to 15.3 days after maximum light that identify it as a fast and luminous Fe II…
Ultra-Luminous Supernovae as a New Probe of the Interstellar Medium in Distant Galaxies
E. Berger, R. Chornock, R. Lunnan +27
We present the Pan-STARRS1 discovery and light curves, and follow-up MMT and Gemini spectroscopy of an ultra-luminous supernova (ULSN; dubbed PS1-11bam) at a redshift of z=1.566 wi…
A Spectroscopic Study of Type Ibc Supernova Host Galaxies from Untargeted Surveys
Nathan E. Sanders, Alicia M. Soderberg, Emily M. Levesque +8
We present the largest spectroscopic study of the host environments of Type Ibc supernovae (SN Ibc) discovered exclusively by untargeted SN searches. Past studies of SN Ibc host en…
A Jet Break in the X-ray Light Curve of Short GRB 111020A: Implications for Energetics and Rates
Wen-fai Fong, Edo Berger, Raffaella Margutti +8
We present broad-band observations of the afterglow and environment of the short GRB 111020A. An extensive X-ray light curve from Swift/XRT, XMM-Newton and Chandra, spanning ~100 s…