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Related papers: Calcium Excess in Novae: Beyond Nuclear Physics Un…

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We present a detailed study of chemical freeze-out in nucleus-nucleus collisions at beam energies of 11.6, 30, 40, 80 and 158A GeV. By analyzing hadronic multiplicities within the statistical hadronization approach, we have studied the…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Becattini , M. Gazdzicki , A. Keranen , J. Manninen , R. Stock

The first peak s-process elements Rb, Sr, Y and Zr in the post-AGB star Sakurai's object (V4334 Sagittarii) have been proposed to be the result of i-process nucleosynthesis in a post-AGB very-late thermal pulse event. We estimate the…

Average multiplicity of light nuclei produced in different interactions at 4.2A GeVc is studied as a function of centrality. A change in multiplicity is observed with increase in the mass of projectile. In 12CC-interactions an unexpected…

Nuclear Experiment · Physics 2015-09-02 Kamal Hussain Khan , M. K. Suleymanov , M. Ajaz , Ali Zaman

The primordial abundance of 7Li as predicted by Big Bang Nucleosynthesis (BBN) is more than a factor 2 larger than what has been observed in metal-poor halo stars. Herein, we analyze the possibility that this discrepancy originates from…

Cosmology and Nongalactic Astrophysics · Physics 2012-05-24 C. Broggini , L. Canton , G. Fiorentini , F. L. Villante

The 135 classical novae that we have discovered in M87 with two $\textit{Hubble Space Telescope}$ imaging surveys appear to be strongly concentrated along that galaxy's jet. Detailed simulations show that the likelihood that this…

High Energy Astrophysical Phenomena · Physics 2024-08-16 Alec M. Lessing , Michael M. Shara , Rebekah Hounsell , Shifra Mandel , Nava Feder , William Sparks

The possibility off measuring for the first time neutrino-nuclei coherent scattering has been recently discussed by several experimental collaborations. It is shown that such a measurement may be very sensitive to non-standard interactions…

High Energy Physics - Phenomenology · Physics 2009-11-11 J. Barranco , O. G. Miranda , T. I. Rashba

Theoretical predictions need quantified uncertainties for a meaningful comparison to experimental results. This is an idea which presently permeates the field of theoretical nuclear physics. In light of the recent progress in estimating…

Nuclear Theory · Physics 2017-03-15 B. D. Carlsson

The summation method for the calculation of reactor $\bar{\nu}_e$ fluxes and spectra is methodically revised and improved. For the first time, a complete uncertainty budget accounting for all known effects likely to impact these…

Superscaling analysis of electroweak nuclear response functions is done for momentum transfer values from 300 to 700 MeV/c. Some effects, absent in the Relativistic Fermi Gas model, where the superscaling holds by construction, are…

Nuclear Theory · Physics 2017-08-23 M. Martini , G. Có , M. Anguiano , A. M. Lallena

The determination of the injection composition of cosmic ray nuclei within astrophysical sources requires sufficiently accurate descriptions of the source physics and the propagation - apart from controlling astrophysical uncertainties. We…

High Energy Astrophysical Phenomena · Physics 2017-07-19 Denise Boncioli , Anatoli Fedynitch , Walter Winter

Context. Classical novae are thermonuclear explosions that take place in the envelopes of accreting white dwarfs in stellar binary systems. The material transferred onto the white dwarf piles up under degenerate conditions, driving a…

Solar and Stellar Astrophysics · Physics 2016-09-21 Jordi Jose , Ghina M. Halabi , Mounib F. El Eid

We estimate the impact on the stellar evolution of the uncertainties in the $3\alpha$ and the $^{12}{\rm C}(\alpha,\gamma)^{16}{\rm O}$ reaction rates [...]. We calculated models of low- and intermediate-mass stars for different values of…

Solar and Stellar Astrophysics · Physics 2023-10-10 F. Tognini , G. Valle , M. Dell'Omodarme , S. Degl'Innocenti , P. G. Prada Moron

We have observed high-dispersion echelle spectra of main-sequence stars in five nearby young associations -- Argus, Carina-Near, Hercules-Lyra, Orion and Subgroup B4 -- and derived abundances for elements ranging from Na to Eu. These are…

Solar and Stellar Astrophysics · Physics 2015-10-21 Arumalla B. S. Reddy , David L. Lambert

The total masses ejected during classical nova eruptions are needed to answer two questions with broad astrophysical implications: Can accreting white dwarfs be pushed towards the Chandrasekhar mass limit to yield type Ia supernovae? Are…

Solar and Stellar Astrophysics · Physics 2015-05-18 Michael M. Shara , Ofer Yaron , Dina Prialnik , Attay Kovetz

Background: 12C has been and is still widely used in neutrino-nucleus scattering and oscillation experiments. More recently, 40Ar has emerged as an important nuclear target for current and future experiments. Liquid argon time projection…

Classical novae are explosive phenomena that take place in stellar binary systems. They are powered by mass transfer from a low-mass, main sequence star onto a white dwarf. The material piles up under degenerate conditions and a…

Solar and Stellar Astrophysics · Physics 2015-05-20 Jordi Casanova , Jordi Jose , Enrique Garcia-Berro , Alan Calder , Steven N. Shore

The mechanism of classical novae explosions is explained, together with some of their observational properties. The scarce but not null impact of novae in the chemical evolution of the Milky Way is analyzed, as well as their relevance for…

Astrophysics · Physics 2009-10-31 Margarita Hernanz , Jordi Jose

Classical Novae were revealed as a surprise source of gamma-rays in Fermi LAT observations. During the first 8 years since the LAT was launched, 6 novae in total have been detected to > 5 sigma in gamma-rays, in contrast to the 69…

High Energy Astrophysical Phenomena · Physics 2017-04-03 Paul J. Morris , Garret Cotter , Anthony M. Brown , Paula M. Chadwick

The status of tests of the standard electroweak model and of searches for new physics in allowed nuclear $\beta$ decay and neutron decay is reviewed including both theoretical and experimental developments. The sensitivity and…

High Energy Physics - Phenomenology · Physics 2018-12-05 Martin Gonzalez-Alonso , Oscar Naviliat-Cuncic , Nathal Severijns

Analysis of presolar grains in primitive meteorites has shown isotopic ratios largely characteristic of the conditions thought to prevail in various astrophysical environments. A possible indicator for a grain of ONe nova origin is a large…