358 citations · 732 across the 16 of their papers we have counts for
13 papers · 1 filter
Nucleosynthesis in Early Neutrino Driven Winds
R. D. Hoffman, J. L. Fisker, J. Pruet +3
Nucleosynthesis in early neutrino winds is investigated. Presented is a brief overview of two recent problems of supernova nucleosynthesis. In the first part we investigate the eff…
Nucleosynthesis in early supernova winds III: No significant contribution from neutron-rich pockets
R. D. Hoffman, J. Pruet, J. L. Fisker +3
Recent nucleosynthesis calculations of Type II supernovae using advanced neutrino transport determine that the early neutrino winds are proton-rich. However, a fraction of the ejec…
On the origin of the lightest Molybdenum isotopes
Jacob Lund Fisker, Robert D. Hoffman, Jason Pruet
We discuss implications of recent precision measurements for the Rh93 proton separation energy for the production of the lightest molybdenum isotopes in proton-rich type II superno…
Simulations of the Boundary Layer Between a White Dwarf and its Accretion Disk
Dinshaw S. Balsara, Jacob Lund Fisker, Patrick Godon +1
Using a 2.5D time-dependent axisymmetric numerical code we recently developed, we solve the full compressible Navier-Stokes equations (including an alpha-viscosity prescription) to…
Explosive hydrogen burning during type I X-ray bursts
Jacob Lund Fisker, Hendrik Schatz, Friedrich-Karl Thielemann
Explosive hydrogen burning in type I X-ray bursts (XRBs) comprise charged particle reactions creating isotopes with masses up to A~100. Since charged particle reactions in a stella…
Experimental measurements of the O15(alpha,gamma)Ne19 reaction rate and the stability of thermonuclear burning on accreting neutron stars
Jacob Lund Fisker, Wanpeng Tan, Joachim Goerres +2
Neutron stars in close binary star systems often accrete matter from their companion stars. Thermonuclear ignition of the accreted material in the atmosphere of the neutron star le…
The accretion and spreading of matter on white dwarfs
Jacob Lund Fisker, Dinshaw S. Balsara, Tom Burger
For a slowly rotating non-magnetized white dwarf the accretion disk extends all the way to the star. Here the matter impacts and spreads towards the poles as new matter continuousl…
Simulating the boundary layer between a white dwarf and its accretion disc
Jacob Lund Fisker, Dinshaw S. Balsara
We describe the results of numerical simulations of the dynamics of the boundary layer (BL) between the accretion disk and the surface of a non-magnetic white dwarf (WD) for differ…
The importance of 15O(a,g)19Ne to X-ray bursts and superbursts
Jacob Lund Fisker, Joachim Gorres, Michael Wiescher +1
One of the two breakout reactions from the hot CNOcycle is 15O(a,g)19Ne, which at low temperatures depends strongly on the resonance strength of the 4.033 MeV state in 19Ne. An exp…
The reactions and ashes of thermonuclear explosions on neutron stars
J. L. Fisker, E. Brown, M. Liebendoerfer +2
This paper reports on the detailed rp-process reaction flow on an accreting neutron star and the resulting ashes of a type I X-ray burst. It is obtained by coupling a 298 isotope r…
Extracting the rp-process from X-ray burst light curves
J. L. Fisker, E. Brown, M. Liebendoerfer +2
The light curves of type I X-ray bursts (XRBs) result from energy released from the atmosphere of a neutron star when accreted hydrogen and helium ignite and burn explosively via t…
The nuclear reaction waiting points, Mg22, Si26, S30, and Ar34, and bolometrically double peaked type I X-ray bursts
Jacob Lund Fisker, Friedrich-Karl Thielemann
Type I X-ray bursts with a double peak in the bolometric luminosity have been observed from several sources. The separation between the two peaks are on the order of a few seconds.…
Models for Type I X-Ray Bursts with Improved Nuclear Physics
S. E. Woosley, A. Heger, A. Cumming +6
Multi-zone models of Type I X-ray bursts are presented that use an adaptive nuclear reaction network of unprecedented size, up to 1300 isotopes. Sequences of up to 15 bursts are fo…