805 citations · 6.2k across the 83 of their papers we have counts for
19 papers · 1 filter
The impact of the 18F(a,p)21Ne reaction on fluorine production in AGB stars
Amanda I. Karakas, Hye Young Lee, Maria Lugaro +2
The recent experimental evaluation of the 18F(a,p)21Ne reaction rate, when considering its associated uncertainties, presented significant differences compared to the theoretical H…
44Ti and 56Ni in core-collapse supernovae
Georgios Magkotsios, Francis X. Timmes, Michael Wiescher +9
We investigate the physical conditions where 44Ti and 56Ni are created in core-collapse supernovae. In this preliminary work we use a series of post-processing network calculations…
The impact of the 18F(a,p)21Ne reaction on asymptotic giant branch nucleosynthesis
Amanda Karakas, Hye Young Lee, Maria Lugaro +2
We present detailed models of low and intermediate-mass asymptotic giant branch (AGB) stars with and without the 18F(a,p)21Ne reaction included in the nuclear network, where the ra…
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…
Fusion reactions in multicomponent dense matter
D. G. Yakovlev, L. R. Gasques, M. Beard +2
We analyze thermonuclear and pycnonuclear fusion reactions in dense matter containing atomic nuclei of different types. We extend a phenomenological expression for the reaction rat…
Sensitivity of p-Process Nucleosynthesis to Nuclear Reaction Rates in a 25 Solar Mass Supernova Model
W. Rapp, J. Goerres, M. Wiescher +2
The astrophysical p process, which is responsible for the origin of the proton rich stable nuclei heavier than iron, was investigated using a full nuclear reaction network for a ty…
Nuclear fusion in dense matter: Reaction rate and carbon burning
L. R. Gasques, A. V. Afanasjev, E. F. Aguilera +5
In this paper we analyze the nuclear fusion rate between equal nuclei for all five different nuclear burning regimes in dense matter (two thermonuclear regimes, two pycnonuclear on…
The effect of the 19F(alpha,p)22Ne reaction rate uncertainty on the yield of fluorine from Wolf-Rayet Stars
R. J. Stancliffe, M. Lugaro, C. Ugalde +3
In the light of recent recalculations of the \el{19}{F}(alpha,p)\el{22}{Ne} reaction rate we present results of the expected yield of \el{19}{F} from Wolf-Rayet (WR) stars. We have…
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…
The Influence of Reaction Rates on the Final p-Abundances
W. Rapp, M. Wiescher, H. Schatz +1
The astrophysical p-process is responsible for the origin of the proton rich nuclei,which are heavier than iron. A huge network involving thousands of reaction rates is necessary t…
Reaction Rates Uncertainties and the Production of F19 in AGB Stars
Maria Lugaro, Claudio Ugalde, Amanda I. Karakas +4
We present nucleosynthesis calculations and the resulting 19F stellar yields for a large set of models with different masses and metallicity. We find that the production of fluorin…
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…
Stellar Sources of the Interstellar Medium
F. -K. Thielemann, D. Argast, F. Brachwitz +14
With the exception of the Big Bang, responsible for 1,2H, 3,4He, and 7Li, stars act as sources for the composition of the interstellar medium. Cosmic rays are related to the latter…
The endpoint of the rp process on accreting neutron stars
H. Schatz, A. Aprahamian, V. Barnard +6
We calculate the rapid proton (rp) capture process of hydrogen burning on the surface of an accreting neutron star with an updated reaction network that extends up to Xe, far beyon…
Element Synthesis in Stars
F. -K. Thielemann, F. Brachwitz, C. Freiburghaus +14
Except for 1H, 2H, 3He, 4He, and 7Li, originating from the Big Bang, all heavier elements are made in stellar evolution and stellar explosions. Nuclear physics, and in many cases n…
X-Ray Bursts and Proton Captures Close to the Dripline
T. Rauscher, F. Rembges, H. Schatz +2
The hydrogen-rich accreted envelopes of neutron stars in binary systems are the site for the rapid proton capture nucleosynthethic process (rp-process), which involves nuclei close…
The rp Process Ashes from Stable Nuclear Burning on an Accreting Neutron Star
Hendrik Schatz, Lars Bildsten, Andrew Cumming +1
We calculate the nucleosynthesis during stable nuclear burning on an accreting neutron star. This is appropriate for weakly magnetic neutron stars accreting at near-Eddington rates…
An Approximation for the rp-Process
F. Rembges, C. Freiburghaus, T. Rauscher +3
Hot (explosive) hydrogen burning or the Rapid Proton Capture Process (rp-process) occurs in a number of astrophysical environments. Novae and X-ray bursts are the most prominent on…