Results 101 to 110 of about 201,431 (246)
High-resolution Spectra of Supernova Remnants in M83
The Astrophysical Journal, 2023 In order to better characterize the rich supernova remnant (SNR) population of M83 (NGC 5236), we have obtained high-resolution (∼85 km s ^−1 ) spectra of 119 of the SNRs and SNR candidates in M83 with Gemini/GMOS, as well as new spectra of the young ...
P. Frank Winkler +3 more
doaj +1 more source
Formation of Uranium Pinacolate from the Reductive Coupling of Acetone
Zeitschrift für anorganische und allgemeine Chemie, EarlyView.Uranium(III) cyclopentadienyl complexes are shown to react with acetone in a pinacol coupling, forming uranium pinacolate complexes. Single crystals obtained from the reaction are the first direct structural proof of the previously proposed metallapinacolate intermediate. 1,2‐Diols are elemental building blocks in organic synthesis.
León Hillers, Lisa Vondung
wiley +1 more source
Cosmic-ray acceleration in supernova remnants: non-linear theory revised [PDF]
, 2012 A rapidly growing amount of evidences, mostly coming from the recent gamma-ray observations of Galactic supernova remnants (SNRs), is seriously challenging our understanding of how particles are accelerated at fast shocks.
D. Caprioli
semanticscholar +1 more source
DMSO solvates of tert‐butylcalix[6]arene and related multisolvent structures
Acta Crystallographica Section B, EarlyView.This study highlights how solvent properties, host–guest interaction energies and packing preferences govern the solid‐state organization of tert‐butylcalix[6]arene, a macrocycle of importance in separation, molecular recognition and supramolecular chemistry.tert‐Butylcalix[6]arene (TBC6) exhibits a rich crystal energy landscape, with structural ...
Monika Wanat +2 more
wiley +1 more source
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
Puzzling Pulsars and Supernova Remnants [PDF]
, 1999 The fact that the majority of the youngest radio pulsars are surrounded by expanding supernova remnants is strong evidence that neutron stars are produced in the supernovae of massive stars. In many cases, the pulsar appears significantly offset from the
Lorimer, D. R., Ramachandran, R.
core +2 more sources
Initial spin periods of neutron stars in supernova remnants [PDF]
, 2012 We present estimates of initial spin periods, P0, for radio pulsars associated with supernova remnants. By using the published data on 30 objects, we were able to derive a reliable estimate for the initial spin period, assuming standard magneto-dipole ...
S. Popov, R. Turolla, R. Turolla
semanticscholar +1 more source
Hamas's October 7 Attack: Analysis of an “Antagonistic” Crisis
Public Administration Review, EarlyView.ABSTRACT The aim of the article is to interpret the Hamas attack of October 7, 2023 in light of crisis management theories, seeking to draw from this event some general lessons about the nature of crises, their determinants, and how they are managed. More specifically, the article addresses three questions: (1) Why did Israel underestimate the warning ...
Federico Toth
wiley +1 more source
OBSERVATIONS OF NON TYPICAL MASERS AT THE RT-22 RADIO TELESCOPE IN 2004–2013
Radio Physics and Radio Astronomy, 2017 Purpose: Some peculiarities of emission of Class I methanol masers on the 80–71A+ transition at 95 GHz in sources closely associated with protostar-forming regions and in supernova remnants are studied.
V. M. Shulga +6 more
doaj +1 more source
SPECTRA OF COSMIC-RAY PROTONS AND HELIUM PRODUCED IN SUPERNOVA REMNANTS [PDF]
, 2012 Data obtained in the Advanced Thin Ionization Calorimeter (ATIC-2), Cosmic Ray Energetics and Mass (CREAM), and Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) experiments suggest that the elemental interstellar spectra ...
V. Ptuskin, V. Zirakashvili, E. Seo
semanticscholar +1 more source