Results 51 to 60 of about 22,632 (204)

How do atomic code uncertainties affect abundance measurements in the intracluster medium?

Astronomische Nachrichten, Volume 341, Issue 2, Page 203-209, February 2020., 2020
Abstract Accurate chemical abundance measurements of X‐ray‐emitting atmospheres pervading massive galaxies, galaxy groups, and clusters provide essential information on the star formation and chemical enrichment histories of these large‐scale structures.
François Mernier, Norbert Werner, Kiran Lakhchaura, Jelle de Plaa, Liyi Gu, Jelle S. Kaastra, Junjie Mao, Aurora Simionescu, Igone Urdampilleta   +8 more
wiley   +1 more source

Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay

Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020
We construct a unified model of inflation and PeV dark matter with an appropriate choice of no‐scale Kähler potential, superpotential, and gauge kinetic function in terms of MSSM fields and hidden sector Polonyi field. The model is consistent with the CMB observations and can explain the PeV neutrino flux observed at IceCube HESE.
Girish Kumar Chakravarty, Najimuddin Khan, Subhendra Mohanty, Ricardo G. Felipe   +3 more
wiley   +1 more source

Underground Nuclear Astrophysics: Present and future of the LUNA experiment [PDF]

EPJ Web of Conferences, 2019
The evolution of celestial bodies is regulated by gravitation and thermonuclear reaction rates, while the Big Bang nucleosynthesis is the result of nuclear processes in a rapidly expanding Universe.
Gustavino Carlo
doaj   +1 more source

Bounds on neutrino-scalar nonstandard interactions from big bang nucleosynthesis [PDF]

, 2020
Coherent forward scattering processes by neutrino-scalar nonstandard interactions (SNSI) induce an effective neutrino mass. In the early Universe, a large neutrino effective mass restricts the production of neutrinos.
Jorge Venzor, A. P'erez-Lorenzana, J. De-Santiago   +2 more
semanticscholar   +1 more source

A New Left‐Right Symmetry Model

Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020
We propose a new L‐R symmetry model where the L‐R symmetry transformation reverses both the L‐R chirality and the local quantum number. We add to the model a global quantum number F whose value is one for fermions (minus one for antifermion) and vanishes for bosons.
Apriadi Salim Adam, Akmal Ferdiyan, Mirza Satriawan, Mariana Frank   +3 more
wiley   +1 more source

Fermi Degenerate Antineutrino Star Model of Dark Energy

Advances in Astronomy, Volume 2020, Issue 1, 2020., 2020
When the Large Hadron Collider resumes operations in 2021, several experiments will directly measure the motion of antihydrogen in free fall for the first time. Our current understanding of the universe is not yet fully prepared for the possibility that antimatter has negative gravitational mass.
Tom F. Neiser, Zdzislaw E. Musielak
wiley   +1 more source

Big Bang Nucleosynthesis (BBN) and Non-Standard Physics

EPJ Web of Conferences, 2018
A brief overview on standard big bang nucleosynthesis (shortly, SBBN) is presented. First, we describe the outcome of the SBBN concerning the abundances of the light elements up to 7Li.
Makki Tahani, El Eid Mounib
doaj   +1 more source

Gravitational wave and CMB probes of axion kination

Journal of High Energy Physics, 2022
Rotations of an axion field in field space provide a natural origin for an era of kination domination, where the energy density is dominated by the kinetic term of the axion field, preceded by an early era of matter domination.
Raymond T. Co, David Dunsky, Nicolas Fernandez, Akshay Ghalsasi, Lawrence J. Hall, Keisuke Harigaya, Jessie Shelton   +6 more
doaj   +1 more source

A Review of Quintessential Inflation

Galaxies, 2021
Some of the most important quintessential inflation scenarios, such as the Peebles–Vilenkin model, are described in detail. These models are able to explain the early- and late-time accelerated expansions of our universe, and the phase transition from ...
Jaume de Haro, Llibert Aresté Saló
doaj   +1 more source

Study of 3He(n,p)3H reaction at cosmological energies with trojan horse method [PDF]

EPJ Web of Conferences, 2020
In the network of reactions present in the Big Bang nucleosynthesis, the 3He(n, p)3H has an important role which impacts the final 7Li abundance.
Spampinato C., Pizzone R.G., Spartà R., Couder M., Tan W., Burian V., Chae K.Y., D’Agata G., Guardo G.L., Indelicato I., Cognata M. La, Lamia L., Lattuada D., Mrazek J., Oliva A., Palmerini S., Prajapati P.M., Rapisarda G.G., Romano S., Sergi M.L., Spitaleri C., Tumino A., Wiescher M., Anguilar S., Bardyan D., Blankstein D., Boccioli L., Callahan L., Clark A., Frentz B., Hall M., Gula A., Henderson S., Kelmar R., Liu Q., Long J., Majumdar A., McGuinness S., Nelson A., O’Malley P., Seyymour C., Skulski M., Wilkinson J.   +42 more
doaj   +1 more source