Results 111 to 120 of about 106,540 (272)

Revealing the True Nature of Hen 2-428

Galaxies, 2018
The nucleus of Hen 2-428 is a short orbital period (4.2 h) spectroscopic binary, whose status as potential supernovae type Ia progenitor has raised some controversy in the literature.
Nicole Reindl, Nicolle L. Finch, Veronika Schaffenroth, Martin A. Barstow, Sarah L. Casewell, Stephan Geier, Marcelo M. Miller Bertolami, Stefan Taubenberger   +7 more
doaj   +1 more source

A Susy Phase Transition as Central Engine [PDF]

, 2005
For several decades the energy source powering supernovae and gamma ray bursts has been a troubling mystery. Many articles on these phenomena have been content to model the consequences of an unknown "central engine" depositing a large amount of energy ...
Clavelli, L.
core  

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, EarlyView.
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

Magnetorotational supernovae

Monthly Notices of the Royal Astronomical Society, 2005
Revised version.
N. V. Ardeljan, Gennady S. Bisnovatyi-Kogan, S. G. Moiseenko   +2 more
openaire   +2 more sources

Maven: a multimodal foundation model for supernova science

Machine Learning: Science and Technology
A common setting in astronomy is the availability of a small number of high-quality observations, and larger amounts of either lower-quality observations or synthetic data from simplified models.
Gemma Zhang, Thomas Helfer, Alexander T Gagliano, Siddharth Mishra-Sharma, V Ashley Villar   +4 more
doaj   +1 more source

The Physics of Core-Collapse Supernovae: Explosion Mechanism and Explosive Nucleosynthesis

Universe
Recent developments in multi-dimensional simulations of core-collapse supernovae have considerably improved our understanding of this complex phenomenon.
Luca Boccioli, Lorenzo Roberti
doaj   +1 more source

Like vs. Like: Strategy and Improvements in Supernova Cosmology Systematics

, 2008
Control of systematic uncertainties in the use of Type Ia supernovae as standardized distance indicators can be achieved through contrasting subsets of observationally-characterized, like supernovae.
Eric V. Linder, M. G. Kendall
core   +1 more source

Leveraging Synteny to Generate Reference Genomes for Conservation: Assembling the Genomes of Hector's and Māui Dolphins

Molecular Ecology Resources, EarlyView.
ABSTRACT Escalating concern regarding the impacts of reduced genetic diversity on the conservation of endangered species has spurred efforts to obtain chromosome‐level genomes through consortia such as the Vertebrate Genomes Project. However, assembling reference genomes for many threatened species remains challenging due to difficulties obtaining ...
S. Alvarez‐Costes, C. S. Baker, R. Constantine, E. L. Carroll, J. Guhlin, L. Dutoit, S. Ferreira, D. Heimeier, N. J. Gemmell, J. Gillum, R. M. Hamner, W. Rayment, W. Roe, B. Te Aikā, L. Urban, A. Alexander   +15 more
wiley   +1 more source

`Pure' Supernovae and Accelerated Expansion of the Universe

, 2011
A special class of type Ia supernovae that is not subject to ordinary and additional intragalactic gray absorption and chemical evolution has been identified.
A. Aguirre, A. Aguirre, A. G. Riess, A. G. Riess, B. Bassett, B. W. Holwerda, D. Yu. Tsvetkov, D. Yu. Tsvetkov, E. Mortsell, E. S. Gorbovskoy, G. Paturel, H. Lampeitl, I. Iben Jr., J. Guy, J. Whelan, M. Hicken, M. Kowalski, M. Sullivan, M. Sullivan, M. V. Pruzhinskaya, R. Barbon, R. Webbink, S. Perlmutter, V. M. Lipunov, V. M. Lipunov, Yu. P. Pskovskii, Yu. P. Pskovskii   +26 more
core   +1 more source

Genomic Signatures and Demographic History of the Widespread and Critically Endangered Yellow‐Breasted Bunting

Molecular Ecology, EarlyView.
ABSTRACT Population declines may have long‐term genetic consequences, including genetic erosion and inbreeding depression, which could affect species' evolutionary potential and increase their risk of extinction. Small populations are more vulnerable to genetic threats than common species, but even species with large populations can also be at risk of ...
Guoling Chen, Simon Yung Wa Sin
wiley   +1 more source