Results 61 to 70 of about 2,618 (181)

ON THE INTRINSIC DIVERSITY OF TYPE II-PLATEAU SUPERNOVAE [PDF]

open access: yesThe Astrophysical Journal, 2015
8 pages, 5 figures, accepted to ...
Pejcha, Ondrej, Prieto, Jose L.
openaire   +2 more sources

Spectral modeling of type II supernovae. I. Dilution factors [PDF]

open access: yes, 2019
We present substantial extensions to the Monte Carlo radiative transfer code TARDIS to perform spectral synthesis for type II supernovae. By incorporating a non-LTE ionization and excitation treatment for hydrogen, a full account of free–free and bound ...
Noebauer, U. M.   +9 more
core   +1 more source

Long Plateau Doth So: How Internal Heating Sources Affect Hydrogen-rich Supernova Light Curves

open access: yesThe Astrophysical Journal
Some hydrogen-rich core-collapse supernovae (SNeIIP) exhibit evidence of a sustained energy source powering their light curves, resulting in a brighter and/or longer-lasting hydrogen recombination plateau phase.
Tatsuya Matsumoto   +2 more
doaj   +1 more source

On the Destruction and Humanitarianisation of the Health System in Gaza and the Need for a Biopolitical Bioethics

open access: yesBioethics, EarlyView.
ABSTRACT This paper examines Israel's destruction and ‘humanitarianisation’ of Palestinian health systems, arguing that this should be understood as an instance of ‘necropolitics,’ as conceived by Achille Mbembe. We review the extensive, long‐term destruction of health systems in Palestine before 7 October 2023 and the catastrophic acceleration of that
Mohammad Salaymeh   +2 more
wiley   +1 more source

Supernovae and their host galaxies – II. The relative frequencies of supernovae types in spirals [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2014
We present an analysis of the relative frequencies of different supernova (SN) types in spirals with various morphologies and in barred or unbarred galaxies. We use a well-defined and homogeneous sample of spiral host galaxies of 692 SNe from the Sloan Digital Sky Survey in different stages of galaxy-galaxy interaction and activity classes of nucleus ...
Hakobyan, A. A.   +10 more
openaire   +3 more sources

Positron survival in type II supernovae [PDF]

open access: yes, 1990
In this work I investigate the possibility of Type II supernovae being the origin for positrons producing observed annihilation radiation observed toward the Galactic center.
Sturner, Steven J.
core  

X-ray emission from radiative shocks in type II supernovae [PDF]

open access: yes, 2006
The X-ray emission from the circumstellar interaction in type II supernovae with a dense circumstellar medium is calculated. In type IIL and type IIn supernovae, mass loss rates are generally high enough for the region behind the reverse shock to be ...
C. Fransson   +5 more
core   +1 more source

SN 2019tua: A Type IIb Supernova with Multiple Bumps in the Light Curves

open access: yesThe Astrophysical Journal
We present photometric and spectroscopic observations and analysis of the Type IIb supernova (SN) SN 2019tua, which exhibits multiple bumps in its declining light curves between 40 and 65 days after discovery.
Xin-Bo Huang   +11 more
doaj   +1 more source

Whole Genome Assembly and Annotation of Two Invasive Sitona Species

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT Weevils are a highly diversified taxon, comprising about 70,000 described species, including many of high economic importance. Here, we present whole genome assemblies and annotations of two Sitona species (Coleoptera: Curculionidae: Entiminae).
Mandira Katuwal   +4 more
wiley   +1 more source

THE STANDARDIZED CANDLE METHOD FOR TYPE II PLATEAU SUPERNOVAE [PDF]

open access: yesThe Astrophysical Journal, 2010
In this paper we study the "standardized candle method" using a sample of 37 nearby (z<0.06) Type II plateau supernovae having BVRI photometry and optical spectroscopy. An analytic procedure is implemented to fit light curves, color curves, and velocity curves. We find that the V-I color toward the end of the plateau can be used to estimate the host-
Olivares, Felipe E.   +10 more
openaire   +7 more sources

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