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Probing Final Stages of Stellar Evolution with X-Ray Observations of SN 2013ej
Sayan Chakraborti, Alak Ray, Randall Smith +8
Massive stars shape their surroundings with mass loss from winds during their lifetimes. Fast ejecta from supernovae, from these massive stars, shocks this circumstellar medium. Em…
Metamorphosis of SN 2014C: Delayed Interaction Between a Hydrogen Poor Core-collapse Supernova and a Nearby Circumstellar Shell
D. Milisavljevic, R. Margutti, A. Kamble +19
We present optical observations of supernova SN 2014C, which underwent an unprecedented slow metamorphosis from H-poor type Ib to H-rich type IIn over the course of one year. The o…
Update on the GRB universal scaling E-E-E with ten years of data
Elena Zaninoni, Maria Grazia Bernardini, Raffaella Margutti +1
From a comprehensive statistical analysis of X-ray light-curves of gamma-ray bursts (GRBs) collected from December 2004 to the end of 2010, we found a three-parameter corre…
A Decade of Short-duration Gamma-ray Burst Broad-band Afterglows: Energetics, Circumburst Densities, and Jet Opening Angles
Wen-fai Fong, Edo Berger, Raffaella Margutti +1
We present a comprehensive catalog and analysis of broad-band afterglow observations for 103 short-duration gamma-ray bursts (GRBs), comprised of all short GRBs from November 2004…
GRB 140606B / iPTF14bfu: Detection of shock-breakout emission from a cosmological gamma-ray burst?
Z. Cano, A. de Ugarte Postigo, D. Perley +13
We present optical and near-infrared photometry of GRB~140606B (), and optical photometry and spectroscopy of its associated supernova (SN). The results of our modelling i…
Type IIb Supernova 2013df Entering Into An Interaction Phase: A Link between the Progenitor and the Mass Loss
K. Maeda, T. Hattori, D. Milisavljevic +23
We report the late-time evolution of Type IIb Supernova (SN IIb) 2013df. SN 2013df showed a dramatic change in its spectral features at ~1 year after the explosion. Early on it sho…