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The Type IIb Supernova 2013df and Its Cool Supergiant Progenitor
Schuyler D. Van Dyk, WeiKang Zheng, Ori D. Fox +10
We have obtained early-time photometry and spectroscopy of Supernova (SN) 2013df in NGC 4414. The SN is clearly of Type IIb, with notable similarities to SN 1993J. From its luminos…
Identifying high-redshift GRBs with RATIR
O. M. Littlejohns, N. R. Butler, A. Cucchiara +16
We present a template fitting algorithm for determining photometric redshifts, , of candidate high-redshift gamma-ray bursts (GRBs). Using afterglow photometry, obtai…
A Tidal Disruption Event in a Nearby Galaxy Hosting an Intermediate Mass Black Hole
Davide Donato, Stephen Bradley Cenko, Stefano Covino +9
We report the serendipitous discovery of a bright point source flare in the Abell cluster 1795 with archival EUVE and Chandra observations. Assuming the EUVE emission is associated…
SN 2000cx and SN 2013bh: Extremely Rare, Nearly Twin Type Ia Supernovae
Jeffrey M. Silverman, Jozsef Vinko, Mansi M. Kasliwal +17
The Type Ia supernova (SN Ia) SN 2000cx was one of the most peculiar transients ever discovered, with a rise to maximum brightness typical of a SN Ia, but a slower decline and a hi…
Evidence that Gamma-ray Burst 130702A Exploded in a Dwarf Satellite of a Massive Galaxy
Patrick L. Kelly, Alexei V. Filippenko, Ori D. Fox +2
GRB 130702A is a nearby long-duration gamma-ray burst (LGRB) discovered by the Fermi satellite whose associated afterglow was detected by the Palomar Transient Factory. Subsequent…
The Progenitor of Supernova 2011dh Has Vanished
Schuyler D. Van Dyk, WeiKang Zheng, Kelsey I. Clubb +7
We conducted Hubble Space Telescope (HST) Snapshot observations of the Type IIb Supernova (SN) 2011dh in M51 at an age of ~641 days with the Wide Field Camera 3. We find that the y…