Browsing by Subject "Supernovae"
Now showing items 1-9 of 9
-
Collapsar accretion and the gamma-ray burst X-ray light curve
(2010-05)We present axisymmetric hydrodynamical simulations of the long-term accretion of a rotating gamma-ray burst progenitor star, a "collapsar," onto the central compact object, which we take to be a black hole. The simulations ... -
Discovery, observations and theory of over luminous supernovae and peculiar transients
(2010-05)Modern wide-field imaging transient search projects led to the discovery of a new class of rare, over-luminous stellar explosions. Events like SN 2005ap (Quimby et al. 2007a), SN 2006gy (Quimby 2006; Smith et al. 2007), ... -
The hunt for the first supernovae : the source density and observability of pair instability supernovae from the first stars
(2012-05)Theoretical models predict that some of the first stars ended their lives as extremely energetic pair-instability supernovae (PISNe). With energies approaching 10⁵³ ergs, these supernovae are expected to be within the ... -
Multidimensional multiscale dynamics of high-energy astrophysical flows
(2010-05)Astrophysical flows have an enormous dynamic range of relevant length scales. The physics occurring on the smallest scales often influences the physics of the largest scales, and vice versa. I present a detailed study ... -
Simulations of high-energy astrophysical phenomena
(2014-12)Supercomputer technology has revolutionized our studies of the most energetic astrophysical phenomena. Here, I present my simulations of energetic outbursts of gamma rays and the explosions of massive stars, and my efforts ... -
Superluminous supernovae : theory and observations
(2013-05)The discovery of superluminous supernovae in the past decade challenged our understanding of explosive stellar death. Subsequent extensive observations of superluminous supernova light curves and spectra has provided some ... -
The Texas supernova search
(2006)Supernovae (SNe) are popular tools to explore the cosmological expansion of the Universe owing to their bright peak magnitudes and reasonably high rates; however, even the relatively homogeneous Type Ia supernovae are not ... -
Turbulent mixing of chemical elements in galaxies
(2008-05)Chemical elements synthesized in stars are released into the interstellar medium (ISM) from discrete and localized events such as supernova (SN) explosions and stellar winds. The efficiency of transport and mixing of the ...
