Mostrando 161 - 180 Resultados de 591 Para Buscar '"supernova"', tiempo de consulta: 0.12s Limitar resultados
  1. 161
    por Nielsen, J. T., Guffanti, A., Sarkar, S.
    Publicado 2016
    “…The ‘standard’ model of cosmology is founded on the basis that the expansion rate of the universe is accelerating at present — as was inferred originally from the Hubble diagram of Type Ia supernovae. There exists now a much bigger database of supernovae so we can perform rigorous statistical tests to check whether these ‘standardisable candles’ indeed indicate cosmic acceleration. …”
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    Online Artículo Texto
  2. 162
    “…The origin of cosmic rays is a pivotal open issue of high-energy astrophysics. Supernova remnants are strong candidates to be the Galactic factory of cosmic rays, their blast waves being powerful particle accelerators. …”
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    “…We discuss the prospects for improved upper limits on neutrino masses that may be provided by a core-collapse supernova explosion in our galaxy, if it exhibits time variations in the neutrino emissions on the scale of a few milliseconds as suggested by recent two-dimensional simulations. …”
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  9. 169
    por Bar, Nitsan, Blum, Kfir, D'Amico, Guido
    Publicado 2018
    “…We study the ratio of neutrino-proton elastic scattering to inverse beta decay event counts, measurable in a scintillation detector like JUNO, as a key observable for identifying the explosion mechanism of a galactic core-collapse supernova. If the supernova is not powered by the core but rather, e.g., by collapse-induced thermonuclear explosion, then a prolonged period of accretion-dominated neutrino luminosity is predicted. …”
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  10. 170
    por Janka, Thomas
    Publicado 2021
    “…<!--HTML--><p>Supernova explosions terminate the lives of massive stars, produce and disseminate a major fraction of the heavy elements, and give birth to neutron stars and black holes. …”
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  11. 171
    “…These interactions lead to the production of sterile neutrinos in supernovae followed by their decay into photons and active neutrinos which can be detected at <math display="inline"><mi>γ</mi></math>-ray telescopes and neutrino detectors, respectively. …”
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    “…Since the dramatic discovery that the supernova SN1998bw coincided in position and time with a gamma-ray burst, the possibility was raised that these two types of spectacular explosions are related. …”
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  15. 175
    por Dighe, Amol S.
    Publicado 1999
    “…We analyze the neutrino conversions inside a supernova in the 3$\nu$ mixing scheme, and their effects on the neutrino spectra observed at the earth. …”
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