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High Density Circumstellar Interaction in the Luminous Type IIn SN 2010jl: The first 1100 days
Claes Fransson, Mattias Ergon, Peter J. Challis +16
HST and ground based observations of the Type IIn SN 2010jl are analyzed, including photometry, spectroscopy in the ultraviolet, optical and NIR bands, 26-1128 days after first det…
Multi-Epoch High-Spectral-Resolution Observations of Neutral Sodium in 14 Type Ia Supernovae
A. Sternberg, A. Gal Yam, J. D. Simon +16
One of the main questions concerning Type Ia supernovae is the nature of the binary companion of the exploding white dwarf. A major discriminant between different suggested models…
On the Source of the Dust Extinction in Type Ia Supernovae and the Discovery of Anomalously Strong Na I Absorption
M. M. Phillips, Joshua D. Simon, Nidia Morrell +28
High-dispersion observations of the Na I D 5890, 5896 and K I 7665, 7699 interstellar lines, and the diffuse interstellar band at 5780 Angstroms in the spectra of 32 Type Ia supern…
Hydrogen-Poor Superluminous Supernovae and Long-Duration Gamma-Ray Bursts Have Similar Host Galaxies
R. Lunnan, R. Chornock, E. Berger +27
We present optical spectroscopy and optical/near-IR photometry of 31 host galaxies of hydrogen-poor superluminous supernovae (SLSNe), including 15 events from the Pan-STARRS1 Mediu…
Radio limits on off-axis GRB afterglows and VLBI observations of SN 2003gk
M. F. Bietenholz, F. De Colle, J. Granot +2
We report on a VLA survey for late-time radio emission from 59 supernovae (SNe) of Type I b/c, which have been associated with long-duration gamma-ray bursts (GRBs). An "off-axis"…
Slowly fading super-luminous supernovae that are not pair-instability explosions
M. Nicholl, S. J. Smartt, A. Jerkstrand +57
Super-luminous supernovae that radiate more than 10^44 ergs per second at their peak luminosity have recently been discovered in faint galaxies at redshifts of 0.1-4. Some evolve s…