Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Arcones Almudena"'
Autor:
Jost, Finia P., Molero, Marta, Navó, Gerard, Arcones, Almudena, Obergaulinger, Martin, Matteucci, Francesca
We provide yields from 189 neutrino-driven core-collapse supernova (CCSN) simulations covering zero-age main sequence masses between 11 and 75 solar masses and three different metallicities. Our CCSN simulations have two main advantages compared to p
Externí odkaz:
http://arxiv.org/abs/2407.14319
Material expelled from binary neutron star (BNS) mergers can harbor r-process nucleosynthesis and power a Kilonova (KN), both intimately related to the astrophysical conditions of the ejection. In turn such conditions indirectly depend on the equatio
Externí odkaz:
http://arxiv.org/abs/2406.03649
Autor:
Psaltis Athanasios, Arcones Almudena, Avila Melina L., Jacobi Maximilian, Hansen Camilla Juul, Lombardo Linda, Meisel Zach, Mohr Peter, Montes Fernando, Ong Wei Jia, Schatz Hendrik
Publikováno v:
EPJ Web of Conferences, Vol 279, p 08002 (2023)
The lighter heavy elements of the first r-process peak, between strontium and silver, can be synthesized in the moderately neutron-rich neutrino–driven ejecta of either core–collapse supernovae or neutron star mergers via the weak r–process. Th
Externí odkaz:
https://doaj.org/article/d6f978bb6f354d339aff04d73a9f3bd6
Autor:
García-Senz, Domingo, Cabezón, Rubén M., Reichert, Moritz, Lechuga, Axel S., Escartín, José A., Psaltis, Athanasios, Arcones, Almudena, Thielemann, Friedrich-Karl
Publikováno v:
A&A 688, A218 (2024)
We present here an extended nuclear network, with 90 species, designed for being coupled with hydrodynamic simulations, which includes neutrons, protons, electrons, positrons, and the corresponding neutrino and anti-neutrino emission. This network is
Externí odkaz:
http://arxiv.org/abs/2403.03743
Autor:
Psaltis Athanasios, Arcones Almudena, Avila Melina L., Jacobi Maximillian, Meisel Zach, Mohr Peter, Montes Fernando, Ong Wei Jia
Publikováno v:
EPJ Web of Conferences, Vol 260, p 07003 (2022)
“Light” heavy elements (Z = 38 − 47) can be synthesized in the neutrino–driven ejecta of core–collapse supernovae via the weak r–process. This nucleosynthesis scenario exhibits uncertainties from the absence of experimental data from (α,
Externí odkaz:
https://doaj.org/article/fb7712bbdc2b4ac9a514b6ec6f14584b
Autor:
Jacobi, Maximilian, Guercilena, Federico Maria, Huth, Sabrina, Ricigliano, Giacomo, Arcones, Almudena, Schwenk, Achim
Publikováno v:
MNRAS, 527, 8812 (2023)
The dynamics in mergers of binary neutron star (BNS) systems depend sensitively on the equation of state (EOS) of dense matter. This has profound implications on the emission of gravitational waves (GWs) and the ejection of matter in the merger and p
Externí odkaz:
http://arxiv.org/abs/2309.09233
We present core-collapse supernova simulations including nuclear reaction networks that impact explosion dynamics and nucleosynthesis. The different composition treatment can lead to changes in the neutrino heating in the vicinity of the shock by mod
Externí odkaz:
http://arxiv.org/abs/2210.11848
Autor:
Lombardo, Linda, Bonifacio, Piercarlo, François, Patrick, Hansen, Camilla J, Caffau, Elisabetta, Hanke, Michael, Skúladóttir, {Á}sa, Arcones, Almudena, Eichler, Marius, Reichert, Moritz, Psaltis, Athanasios, Hansen, Andreas J Koch, Sbordone, Luca
Publikováno v:
Astronomy and Astrophysics - A&A, EDP Sciences
Aims. The Chemical Evolution of R-process Elements in Stars (CERES) project aims to provide a homogeneous analysis of a sample of metal-poor stars ([Fe/H]<-1.5). We present the stellar parameters and the chemical abundances of elements up to Zr for a
Externí odkaz:
http://arxiv.org/abs/2206.13836
Autor:
Reichert, Moritz, Obergaulinger, Martin, Aloy, Miguel-Angel, Gabler, Michael, Arcones, Almudena, Thielemann, Friedrich-Karl
Magnetorotational supernovae are a rare type of core-collapse supernovae where the magnetic field and rotation play a central role in the dynamics of the explosion. We present the post-processed nucleosynthesis of state-of-the-art neutrino-MHD supern
Externí odkaz:
http://arxiv.org/abs/2206.11914
Autor:
Molero, Marta, Romano, Donatella, Reichert, Moritz, Matteucci, Francesca, Arcones, Almudena, Cescutti, Gabriele, Simonetti, Paolo, Hansen, Camilla Juul, Lanfranchi, Gustavo A.
We study the evolution of Eu and Ba abundances in local group dwarf spheroidal and ultra faint dwarf galaxies by means of detailed chemical evolution models and compare our results with new sets of homogeneous abundances. The adopted models include g
Externí odkaz:
http://arxiv.org/abs/2105.06916