Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/462991a | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nature of Phase Transitions and Metastability in Scalar-Tensor Theories.
Phys Rev Lett
August 2025
Koç University, Department of Physics, Rumelifeneri Yolu, 34450 Sar𝚤yer, İstanbul, Türkiye.
Compact stars above a critical stellar mass develop large scalar fields in some scalar-tensor theories. This scenario called spontaneous scalarization has been an intense topic of study since it passes weak-field gravity tests naturally while providing clear observables in the strong-field regime. The underlying mechanism for the onset of scalarization is often depicted as a second-order phase transition.
View Article and Find Full Text PDFExtremely stripped supernova reveals a silicon and sulfur formation site.
Nature
August 2025
Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA, USA.
Article Synopsis
- Stars power themselves by fusing hydrogen into helium, leading to a complex shell structure with heavier elements forming in layers as they evolve.
- The core eventually collapses and can result in a supernova or a black hole when iron is fused from silicon and sulfur.
- The discovery of supernova SN 2021yfj showcases a unique event where a star stripped to its O/Si/S-rich layer expels a large shell before exploding, providing new insights into element production and stellar evolution.
Microbial and nutrient enrichments in Brine and Nilas during the first 24 h of open water lead refreezing.
Sci Rep
August 2025
Arctic Research Centre, Department of Biology, Aarhus University, Aarhus, Denmark.
Open water leads in the sea ice covering the Polar regions are becoming more frequent and cover larger areas as a result of the warming and thinning of the ice. Refreezing of the leads advances the occurrence of young and newly formed sea ice (nilas), which has a thickness of < 10 cm and is characterized by a highly saline surface brine. Due to the growth of fragile frost flowers exposed at its surface, nilas can become a significant source of bromine, mercury, sea salt aerosols, bioaerosols, and ice nucleating particles for the atmosphere.
View Article and Find Full Text PDFStellar Weak Rates of the rp-Process Waiting Points: Effects of Strong Magnetic Fields.
Phys Rev Lett
July 2025
Shanghai Jiao Tong University, School of Physics and Astronomy, Shanghai 200240, China.
Incorporating microscopic nuclear-structure information into the discussion of bulk properties of astronomical objects such as neutron stars has always been a challenging issue in interdisciplinary nuclear astrophysics. Using the rp-process nucleosynthesis as an example, we studied the effective stellar β^{+} and electron capture (EC) rates as well as the corresponding neutrino energy-loss rates of eight waiting-point (WP) nuclei with realistic stellar conditions and presence of strong magnetic fields. The relevant nuclear transition strengths are provided by the projected shell model.
View Article and Find Full Text PDFOther Earths, Gaian bottlenecks and Darwinized Gaias.
Philos Trans R Soc Lond B Biol Sci
August 2025
Research School of Astronomy and Astrophysics, Australian National University, Weston Creek, Australian Capital Territory, Australia.
In our galaxy, tens of billions of wet, rocky Earth-like planets orbit in the habitable zones of their host stars. Stellar spectra and models of devolatilization yield ranges of plausible chemistries on these Earths. The early emergence of biology on Earth from similar chemistry has a chance of being universally relevant to the origins of life elsewhere.
View Article and Find Full Text PDF