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The Role of the Magnetorotational Instability in Massive Stars
J. Craig Wheeler, Daniel Kagan, Emmanouil Chatzopoulos
The magnetorotational instability (MRI) is key physics in accretion disks and is widely considered to play some role in massive-star core collapse. Models of rotating massive stars…
Analysis of Late--time Light Curves of Type IIb, Ib and Ic Supernovae
J. Craig Wheeler, V. Johnson, A. Clocchiatti
The shape of the light curve peak of radioactive--powered core--collapse "stripped--envelope" supernovae constrains the ejecta mass, nickel mass, and kinetic energy by the brightne…
A Luminous, Fast Rising UV-Transient Discovered by ROTSE: a Tidal Disruption Event?
J. Vinko, F. Yuan, R. M. Quimby +6
We present follow-up observations of an optical transient (OT) discovered by ROTSE on Jan. 21, 2009. Photometric monitoring was carried out with ROTSE-IIIb in the optical and Swift…
A semi-analytical light curve model and its application to type IIP supernovae
Andrea P. Nagy, Andras Ordasi, Jozsef Vinko +1
The aim of this work is to present a semi-analytical light curve modeling code which can be used for estimating physical properties of core collapse supernovae (SNe) in a quick and…
The Broad-Lined Type Ic SN 2012ap and the Nature of Relativistic Supernovae Lacking a Gamma-ray Burst Detection
D. Milisavljevic, R. Margutti, J. T. Parrent +20
We present ultraviolet, optical, and near-infrared observations of SN 2012ap, a broad-lined Type Ic supernova in the galaxy NGC 1729 that produced a relativistic and rapidly decele…
Early-time light curves of Type Ib/c supernovae from the SDSS-II Supernova Survey
F. Taddia, J. Sollerman, G. Leloudas +6
We analyse the early-time optical light curves (LCs) of 20 Type Ib/c supernovae (SNe Ib/c) from the Sloan Digital Sky Survey (SDSS) SN survey II, aiming to study their properties a…