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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…
The Afterglow and ULIRG Host Galaxy of the Dark Short GRB 120804A
E. Berger, B. A. Zauderer, A. Levan +12
We present the optical discovery and sub-arcsecond optical and X-ray localization of the afterglow of the short GRB 120804A, as well as optical, near-IR, and radio detections of it…
Host Galaxy Properties of the Subluminous GRB 120422A/SN 2012bz
Emily M. Levesque, Ryan Chornock, Alicia M. Soderberg +2
GRB 120422A is a nearby (z = 0.283) long-duration GRB (LGRB) detected by Swift with E(gamma,iso) ~ 4.5\times1049 erg. It is also associated with the spectroscopically-confirmed bro…
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…