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astro-ph.CO2013★ 86 cited
Spectroscopic Observations of SN 2012fr: A Luminous Normal Type Ia Supernova with Early High Velocity Features and Late Velocity Plateau
M. J. Childress, R. A. Scalzo, S. A. Sim +55
We present 65 optical spectra of the Type Ia supernova SN 2012fr, of which 33 were obtained before maximum light. At early times SN 2012fr shows clear evidence of a high-velocity f…
astro-ph.CO2009★ 42 cited
Estimating Redshifts for Long Gamma-Ray Bursts
Limin Xiao, Bradley E. Schaefer
We are constructing a program to estimate the redshifts for GRBs from the original Swift light curves and spectra, aiming to get redshifts for the Swift bursts \textit{without} spe…
astro-ph.CO2009★ 3 cited
Are Swift Long-Lag Gamma-Ray Bursts in the Local Supercluster?
Limin Xiao, Bradley E. Schaefer
A sample of 18 long-lag (tau_{lag} > 1 s) Gamma-Ray Bursts (GRBs) has been drawn from our catalog of all Swift long GRBs. Four different tests are done on this sample to test the p…