Results 71 to 80 of about 48,557 (214)

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst   +2 more
wiley   +1 more source

The stellar origins of 96Zr excesses in presolar graphites from the Murchison meteorite

Astronomy & Astrophysics
Context. Zirconium-96 is a stable isotope that can be synthesized under different neutron-rich nucleosynthetic conditions. Astrophysical models predict its production to occur in various stellar environments: from low-to-intermediate-mass asymptotic ...
Pal I., Jadhav M., Shulaker D. Z., Raiwa M., Savina M. R., Bouillion H., Pignatari M., Roberti L., Lugaro M., Szányi B., Karakas A., Denissenkov P., Herwig F., Dory C. J., Gyngard F., Kita N., Amari S.   +16 more
doaj   +1 more source

Primordial nucleosynthesis

, 2006
To appear in the proceedings of the May 2003 STScI Symposium, ``The Local Group as an Astrophysical Laboratory''; 17 pages, 11 figures.
openaire   +2 more sources

Nucleosynthesis in Novae [PDF]

Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 2017
Peer ...
openaire   +2 more sources

PRIMORDIAL NUCLEOSYNTHESIS REDUX

The Astrophysical Journal, 1991
The abundances of D, He-3, He-4, and Li-7, are presently recalculated within the framework of primordial nucleosynthesis in the standard hot big band model, in order to estimate the primordial abundances of the light elements. A comparison between theory and experiment demonstrates the consistency of standard model predictions; the baryon density ...
Terry P. Walker, Gary Steigman, Ho-Shik Kang, David M. Schramm, Keith A. Olive   +4 more
openaire   +1 more source

Can We Draw Conclusions on Supernova Shock Wave Propagation Using Short‐Lived Radioactive Isotopes?

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT We run a three‐dimensional Galactic chemical evolution (GCE) model to follow the propagation of 53Mn (exclusively produced from type Ia supernovae, SNIa), 60Fe (exclusively produced from core‐collapse supernovae, CCSNe), 182Hf (exclusively produced from intermediate mass stars, IMSs), and 244Pu (exclusively produced from neutron star mergers ...
Benjamin Wehmeyer, Andrés Yagüe López, Benoit Côté, Maria K. Petö, Chiaki Kobayashi, Maria Lugaro   +5 more
wiley   +1 more source

Explosive Nucleosynthesis in Magnetohydrodynamical Jets from Collapsars II. Heavy-Element Nucleosynthesis of s, r, p-Processes

, 2012
We investigate the nucleosynthesis in a massive star of 70 M_solar with solar metallicity in the main sequence stage. The helium core mass after hydrogen burning corresponds to 32 M_solar.
Fujimoto, Shin-ichiro, Hashimoto, Masa-aki, Kotake, Kei, Ono, Masaomi, Yamada, Shoichi   +4 more
core   +1 more source

Methyltransferase‐Like 3‐Mediated N6‐Methyladenosine Modification on RNAs: A Novel Perspective for the Pathogenesis and Treatment of Bone Diseases

Journal of Cellular and Molecular Medicine, Volume 29, Issue 5, March 2025.
ABSTRACT Osteoarthritis, osteoporosis, and osteosarcoma are prevalent osseous pathologies associated with the aberrant functionality of chondrocytes, osteoclasts, and osteoblasts, respectively. These conditions frequently exhibit therapeutic resistance and possess a high mortality risk, thus representing substantial health threats.
Dongqiong Xiao, Deshuang Zhang, Yi Qu, Xiaojuan Su   +3 more
wiley   +1 more source

Observing the signatures of AGB s-process nucleosynthesis in planetary nebulae: An origins story

Frontiers in Astronomy and Space Sciences, 2022
I relate an anecdotal history of the beginnings of a new initiative in studies of the chemical composition of planetary nebulae: namely, investigating abundances of elements beyond the iron-peak through infrared spectroscopy.
Harriet L. Dinerstein
doaj   +1 more source

Advancing Nucleosynthesis in Self-consistent, Multidimensional Models of Core-Collapse Supernovae

, 2014
We investigate core-collapse supernova (CCSN) nucleosynthesis in polar axisymmetric simulations using the multidimensional radiation hydrodynamics code CHIMERA.
Blondin, John M., Bruenn, Stephen W., Chertkow, Merek A., Harris, J. Austin, Hix, W. Raphael, Lentz, Eric J., Marronetti, Pedro, Messer, O. E. Bronson, Mezzacappa, Anthony, Yakunin, Konstantin N.   +9 more
core   +1 more source