Results 71 to 80 of about 21,733 (235)

Supernova 1604, Kepler’s Supernova, and Its Remnant [PDF]

, 2016
Supernova 1604 is the last Galactic supernova for which historical records exist. Johannes Kepler's name is attached to it, as he published a detailed account of the observations made by himself and European colleagues. Supernova 1604 was very likely a Type Ia supernova, which exploded 350 pc to 750 pc above the Galactic plane.
openaire   +4 more sources

Synthesis and Characterization of the Molybdenum Carbonyl‐Functionalized Zintl Ions [(η4‐Pb4)Mo(CO)3]4− and [Pb4{Mo(CO)3}3]6−

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
The reaction of the tetrahedral [Pb4]4− with Mo(CO)4(tmeda) yields two different Mo(CO)3‐functionalized clusters which can both be related to known clusters by the same substitution pattern following the isolobal principle. The crystal structures of [Na([2.2.2]crypt)]2Na2[(η4‐Pb4)Mo(CO)3] · 8.7NH3 and Na6[Pb4{Mo(CO)3}3] · 22NH3 are reported.
Michael Witzmann, Nikolaus Korber
wiley   +1 more source

SNO and supernovae [PDF]

Nuclear Physics B - Proceedings Supplements, 2001
The Sudbury Neutrino Observatory (SNO) has unique capabilities as a supernova detector. In the event of a galactic supernova there are opportunities, with the data that SNO would collect, to constrain certain intrinsic neutrino properties significantly, to test details of the various models of supernova dynamics, and to provide prompt notification to ...
openaire   +2 more sources

Nebular-phase spectra of nearby Type Ia Supernovae [PDF]

, 2017
We present late-time spectra of eight Type Ia supernovae (SNe Ia) obtained at > 200 d after peak brightness using the Gemini South and Keck telescopes. All of the SNe Ia in our sample were nearby, well separated from their host galaxy's light, and have ...
A. V. Filippenko, M. L. Graham, D. J. Sand, G. Hosseinzadeh, Hosseinzadeh, G., Sand, David J., Parrent, J. T., J. T. Parrent, Graham, M. L., D. A. Howell, D. Hiramatsu, Valenti, S., S. Valenti, I. Arcavi, C. McCully, Hiramatsu, D., Arcavi, I., S. Kumar, Kumar, S., Howell, D. A., McCully, C., Filippenko, A. V.   +21 more
core   +1 more source

Effect of molecular perturbation on cocrystal formation: theophylline and its 8‐halo analogues with flavonoids

Acta Crystallographica Section C, EarlyView.
The tendency for alkaloid–flavonoid cocrystal formation is found to be markedly different for theophylline (Tph) compared to its 8‐halo analogues. Through screening with 13 common flavonoids, Tph is found to form cocrystals with six flavonoids, whereas 8‐Cl‐Tph and 8‐Br‐Tph each form cocrystals with just two, myricetin and kaempferol.
Weijian Ye, Herman H-Y. Sung, Ian D. Williams   +2 more
wiley   +1 more source

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

Bioethics, 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, Arianne Shahvisi, Sohail Jannesari   +2 more
wiley   +1 more source

Cosmic expansion in homogeneous and inhomogeneous universes : supernovae type Ia as cosmic probes [PDF]

, 2010
Seikel M. Cosmic expansion in homogeneous and inhomogeneous universes : supernovae type Ia as cosmic probes. Bielefeld (Germany): Bielefeld University; 2010.Since it has been discovered in the late 1990s that the universe is likely to be expanding ...
Seikel, Marina
core   +1 more source

Hydrodynamic Studies of the Evolution of Recurrent, Symbiotic and Dwarf Novae: the White Dwarf Components are Growing in Mass

Open Astronomy, 2012
Symbiotic binaries are systems containing white dwarfs (WDs) and red giants. Symbiotic novae are those systems in which thermonuclear eruptions occur on the WD components.
Starrfield S., Timmes F. X., Iliadis C., Hix W. R., Arnett W. D., Meakin C., Sparks W. M.   +6 more
doaj   +1 more source

Whole Genome Assembly and Annotation of Two Invasive Sitona Species

Journal 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, Upendra Raj Bhattarai, Craig B. Phillips, Neil J. Gemmell, Eddy Dowle   +4 more
wiley   +1 more source

INTERACTING SUPERNOVAE AND SUPERNOVA IMPOSTORS: SN 2009ip, IS THIS THE END? [PDF]

The Astrophysical Journal, 2013
We report the results of a 3 year-long dedicated monitoring campaign of a restless Luminous Blue Variable (LBV) in NGC 7259. The object, named SN 2009ip, was observed photometrically and spectroscopically in the optical and near-infrared domains.
Pastorello A., Cappellaro E., Inserra C., Smartt S. J., Pignata G., Benetti S., Valenti S., Fraser M., Takáts K., Benitez S., Botticella M. T., Brimacombe J., Bufano F., Cellier Holzem F., Costado M. T., Cupani G., Curtis I., Elias Rosa N., Ergon M., Fynbo J. P. U., Hambsch F. J., Hamuy M., Harutyunyan A., Ivarson K. M., Kankare E., Martin J. C., Kotak R., LaCluyze A. P., Maguire K., Mattila S., Maza J., McCrum M., Miluzio M., Norgaard Nielsen H. U., Nysewander M. C., Ochner P., Pan Y. C., PUMO, MARIA LETIZIA, Reichart D. E., Tan T. G., Taubenberger S., Tomasella L., Turatto M., Wright D.   +43 more
openaire   +9 more sources