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The convective Urca process
P. Lesaffre, Ph. Podsiadlowski, C. A. Tout
One possible fate of an accreting white dwarf is explosion in a type Ia supernova. However, the route to the thermonuclear runaway has always been uncertain owing to the lack of a…
A two-stream formalism for the convective Urca process
P. Lesaffre, Ph. Podsiadlowski, C. A. Tout
We derive a new formalism for convective motions involving two radial flows. This formalism provides a framework for convective models that guarantees consistency for the chemistry…
Stellar Mass Black Hole Binaries as ULXs
Saul Rappaport, Philipp Podsiadlowski, Eric Pfahl
Ultraluminous X-ray sources (ULXs) with Lx > 10^{39} ergs/s have been discovered in great numbers in external galaxies with ROSAT, Chandra, and XMM. The central question regarding…
The Rates of Hypernovae and Gamma-Ray Bursts: Implications for their Progenitors
Ph. Podsiadlowski, P. A. Mazzali, K. Nomoto +2
A critical comparison of estimates for the rates of hypernovae (HNe) and gamma-ray bursts (GRBs) is presented. Within the substantial uncertainties, the estimates are shown to be q…
The massive binary companion star to the progenitor of supernova 1993J
J. R. Maund, S. J. Smartt, R. P. Kudritzki +2
The massive star which underwent core-collapse to produce SN1993J was identified as a non-variable red supergiant star in images of the galaxy M81 taken before explosion. However t…