Zobrazeno 1 - 10
of 208
pro vyhledávání: '"Buras R"'
Publikováno v:
J. Quant. Spectrosc. Radiat. Transfer, 112(10):1622-1631, 2011
An efficient method to compute accurate polarized solar radiance spectra using the (three-dimensional) Monte Carlo model MYSTIC has been developed. Such high resolution spectra are measured by various satellite instruments for remote sensing of atmos
Externí odkaz:
http://arxiv.org/abs/1901.01842
Publikováno v:
AIP Conf.Proc.1005:225-228,2008
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 effect of nuclear parameters on the synthesis of Mo92 and Mo94. Based on
Externí odkaz:
http://arxiv.org/abs/0801.1828
It has been recently proposed that the shocked surface layers of exploding O-Ne-Mg cores provide the conditions for r-process nucleosynthesis, because their rapid expansion and high entropies enable heavy r-process isotopes to form even in an environ
Externí odkaz:
http://arxiv.org/abs/0712.4237
Autor:
Martínez-Pinedo, G., Kelic, A., Langanke, K., Schmidt, K. -H., Mocelj, D., Fröhlich, C., Thielemann, F. -K., Panov, I., Rauscher, T., Liebendörfer, M., Zinner, N. T., Pfeiffer, B., Buras, R., Janka, H. -Th.
Publikováno v:
PoSNIC-IX:064,2006
This manuscript reviews recent progress in our understanding of the nucleosynthesis of medium and heavy elements in supernovae. Recent hydrodynamical models of core-collapse supernovae show that a large amount of proton rich matter is ejected under s
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608490
1D and 2D supernova simulations for stars between 11 and 25 solar masses are presented, making use of the Prometheus/Vertex neutrino-hydrodynamics code, which employs a full spectral treatment of the neutrino transport. Multi-dimensional transport as
Externí odkaz:
http://arxiv.org/abs/astro-ph/0512189
Publikováno v:
Astrophys.J.644:1028-1039,2006
One of the outstanding unsolved riddles of nuclear astrophysics is the origin of the so called ``p-process'' nuclei from A = 92 to 126. Both the lighter and heavier p-process nuclei are adequately produced in the neon and oxygen shells of ordinary Ty
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511194
Publikováno v:
Astron.Astrophys.447:1049-1092,2006
Supernova models with a full spectral treatment of the neutrino transport are presented, employing the Prometheus/Vertex neutrino-hydrodynamics code with a ``ray-by-ray plus'' approximation for treating two- (or three-) dimensional problems. The meth
Externí odkaz:
http://arxiv.org/abs/astro-ph/0507135
Publikováno v:
Astron.Astrophys. 443 (2005) 201-210
The role of ion-ion correlations in suppressing neutrino-nucleus elastic scattering during stellar core collapse is reinvestigated, using two different equations of state. We test the improved description by Itoh et al. against the treatment suggeste
Externí odkaz:
http://arxiv.org/abs/astro-ph/0504291
Publikováno v:
Astron.Astrophys. 445 (2006) 273
We investigate the possibility to approximate relativistic effects in hydrodynamical simulations of stellar core collapse and post-bounce evolution by using a modified gravitational potential in an otherwise standard Newtonian hydrodynamic code. Diff
Externí odkaz:
http://arxiv.org/abs/astro-ph/0502161
Publikováno v:
Phys.Rev. D71 (2005) 063003
One of the robust features found in simulations of core-collapse supernovae (SNe) is the prompt neutronization burst, i.e. the first $\sim 25$ milliseconds after bounce when the SN emits with very high luminosity mainly $\nu_e$ neutrinos. We examine
Externí odkaz:
http://arxiv.org/abs/astro-ph/0412082