Results 81 to 90 of about 48,520 (216)

A Central Excess of Stripped-Envelope Supernovae within Disturbed Galaxies

open access: yes, 2012
This paper presents an analysis of core-collapse supernova distributions in isolated and interacting host galaxies, paying close attention to the selection effects involved in conducting host galaxy supernova studies.
Alonso-Herrero   +105 more
core   +1 more source

The evolution of the peculiar Type Ia supernova SN 2005hk over 400 days [PDF]

open access: yes, 2008
$UBVRI$ photometry and medium resolution optical spectroscopy of peculiar Type Ia supernova SN 2005hk are presented and analysed, covering the pre-maximum phase to around 400 days after explosion.
Anupama, G. C.   +8 more
core   +2 more sources

Reduced Geomagnetic Shielding During the Laschamps Excursion and Its Impact on Cosmic‐Ray‐Induced Atmospheric Radiation

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract The Laschamps geomagnetic excursion (≈41,000 years BP) was a period of significant weakening and incomplete reversal of the Earth's magnetic field. The weakening substantially reduced geomagnetic shielding against cosmic rays (CRs), which contribute to phenomena at Earth, such as cosmogenic isotope production, and atmospheric ionisation and ...
N. Larsen   +4 more
wiley   +1 more source

Comparing the Host Galaxies of Type Ia, Type II and Type Ibc Supernovae

open access: yes, 2014
We compare the host galaxies of 902 supernovae, including SNe Ia, SNe II and SNe Ibc, which are selected by cross-matching the Asiago Supernova Catalog with the SDSS Data Release 7.
Chen, X. Y.   +10 more
core   +2 more sources

Locating Type II-P Supernovae Using the Expanding Photosphere Method. I. Comparing Distances from Different Line Velocities

open access: yesThe Astrophysical Journal, 2023
W present the results of our work testing a version of the Expanding Photosphere Method (EPM) used by Hamuy et al. and Dessart & Hillier to calculate distances to Type II-P supernovae, accounting for the deviations of their luminosities from those of ...
R. C. Mitchell   +5 more
doaj   +1 more source

Life on Mars? The physiological perspective

open access: yes
Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
wiley   +1 more source

The HIF‐1α Pathway Regulates Satellite Cell Fate During Aging Through Histone Lactylation

open access: yesAging Cell, Volume 25, Issue 2, February 2026.
FG‐4592–induced activation of HIF‐1α enhances anaerobic glycolysis and promotes lactate‐driven PAX7 lactylation, thereby boosting satellite cell activity and counteracting age‐related muscle decline. ABSTRACT Aging‐associated sarcopenia is driven in part by the progressive loss of type II glycolytic fibers and the functional decline of their resident ...
Marco Piccoli   +15 more
wiley   +1 more source

Stabilizing Anion–Anion Aggregates via Dihydrogen Bonds in Non‐Classical Inorganic Molecules

open access: yesAggregate, Volume 7, Issue 1, January 2026.
Despite Coulomb's law, the anionic [o‐FESAN]− cluster forms stable anti‐electrostatic aggregates via short dihydrogen bonds. Experimental (nuclear magnetic resonance, dynamic light scattering, and X‐ray diffraction) and theoretical (density functional theory) studies reveal that C–H···H–B interactions overcome long‐range repulsion, enabling cluster ...
Adnana Zaulet   +5 more
wiley   +1 more source

Ejection of Supernova-Enriched Gas From Dwarf Disk Galaxies

open access: yes, 2004
We examine the efficiency with which supernova-enriched gas may be ejected from dwarf disk galaxies, using a methodology previously employed to study the self-enrichment efficiency of dwarf spheroidal systems.
Cole S.   +7 more
core   +1 more source

JWST Observations of SN 2024ggi. I. Interpretation and Model Comparison of the Type II Supernova 2024ggi at 55 Days past Explosion

open access: yesThe Astrophysical Journal
We present panchromatic 0.4–21 μ m observations of the nearby (∼7.2 Mpc) Type II supernova (SN) 2024ggi, obtained during the plateau phase at ∼55 days past explosion. Our data set includes JWST spectra spanning 1.7–14 μ m, mid-infrared (MIR) imaging at 7.
E. Baron   +42 more
doaj   +1 more source

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