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Mostrando 301 - 320 Resultados de 591 Para Buscar '"supernova"', tiempo de consulta: 0.09s Limitar resultados
  1. 301
    por McNamara, Geoff
    Publicado 2008
    “…Pulsars are rapidly spinning neutron stars, the collapsed cores of once massive stars that ended their lives as supernova explosions. Pulsar rotation rates can reach incredible speeds, up to hundreds of times per second. …”
    Enlace del recurso
    Enlace del recurso
    Clocks in the sky: the story of pulsars
  2. 302
    por Hayward, Sean Alan
    Publicado 2013
    “…Black holes, once just fascinating theoretical predictions of how gravity warps space-time according to Einstein's theory, are now generally accepted as astrophysical realities, formed by post-supernova collapse, or as supermassive black holes mysteriously found at the cores of most galaxies, powering active galactic nuclei, the most powerful objects in the universe. …”
    Enlace del recurso
    Black holes: new horizons
  3. 303
    por Klein, Ulrich, Fletcher, Andrew
    Publicado 2014
    “…Theoretical concepts are addressed wherever necessary, with derivations presented in sufficient detail to be generally accessible.In the first few chapters the authors present an introduction to various astrophysical phenomena related to cosmic magnetism, with scales ranging from molecular clouds in star-forming regions and supernova remnants in the Milky Way, to clusters of galaxies. …”
    Enlace del recurso
    Galactic and intergalactic magnetic fields
  4. 304
    “…We derive a comprehensive set of constraints on the dipole portal to HNLs by utilizing data from LEP, LHC, MiniBooNE, LSND as well as observations of Supernova 1987A and consistency of the standard big bang nucleosynthesis. …”
    Enlace del recurso
    Enlace del recurso
    Dipole portal to heavy neutral leptons
  5. 305
    por Ioannisian, A.N., Smirnov, A. Yu.
    Publicado 2017
    “…The effect is crucial for the interpretation of oscillation data and for the oscillation tomography of the Earth with low energy (solar, supernova, atmospheric, etc.) neutrinos.…”
    Enlace del recurso
    Enlace del recurso
    Attenuation effect and neutrino oscillation tomography
  6. 306
    por Kachelriess, M., Tomas, R.
    Publicado 2001
    “…As an application we consider the case $n=-3$ important for oscillations of supernova neutrinos.…”
    Enlace del recurso
    Enlace del recurso
    Non-adiabatic level crossing in (non-) resonant neutrino oscillations
  7. 307
    por De Rujula, A.
    Publicado 2001
    “…The observations suggest that $\gamma$-ray bursts (GRBs) are produced by jets of relativistic cannonballs (CBs), emitted in supernova (SN) explosions. The CBs, reheated by their collision with the SN shell, emit radiation and Doppler-boost it to the few-hundred keV energy of the GRB's photons. …”
    Enlace del recurso
    High-energy neutrinos and hard $\gamma$-rays in coincidence with Gamma Ray Bursts
  8. 308
    por Guglielmi, A M
    Publicado 2005
    “…The ICARUS detector, a 3000 t liquid Argon TPC with unique imaging and calorimetric capabilities, will allow for a rich physics programme, covering atmospheric, solar and supernova neutrinos, nucleon decay and neutrino oscillations with the CERN to Gran Sasso neutrino beam. …”
    Enlace del recurso
    Enlace del recurso
    The ICARUS project
  9. 309
    “…We study this universality using g -process calculations with core-collapse supernova explosions under various conditions. The calculated results show that the g -process under the various conditions can occur but the ratios are almost constant with the wide region independent of the conditions. …”
    Enlace del recurso
    Universality of the p process
  10. 310
    por Xing, Zhi-Zhong, Zhou, Shun
    Publicado 2011
    “…The cosmic neutrino background, stellar neutrinos, supernova neutrinos and ultrahigh-energy cosmic neutrinos, together with the cosmological matter-antimatter asymmetry and other roles of massive neutrinos in cosmology, are discussed in detail. …”
    Enlace del recurso
    Enlace del recurso
    Neutrinos in particle physics, astronomy, and cosmology
  11. 311
    por Gaensler, Bryan
    Publicado 2011
    “…Stars die in catastrophic supernova explosions a billion times brighter than the Sun. …”
    Enlace del recurso
    Extreme cosmos
  12. 312
    por Ekspong, Gösta
    Publicado 1994
    “…Hans Bethe's lectures dealt with two themes: the astrophysical importance of neutrinos in supernova outbursts and a theoretical account of neutrinos through observations of the neutrino flux from the centre of the sun. …”
    Enlace del recurso
    The Oskar Klein memorial lectures
  13. 313
    por De Rújula, Alvaro
    Publicado 2002
    “…The Cannonball Model is based on the hypothesis that GRBs and their afterglows are made in supernova explosions by relativistic ejecta similar to the ones observed in quasars and microquasars. …”
    Enlace del recurso
    Enlace del recurso
    Optical and X-ray Afterglows in the Cannonball Model of GRBs
  14. 314
    “…The LVD detector, installed in hall A of the LNGS and mainly dedicated to the study of supernova neutrinos, was fully operating during the whole CNGS running time. …”
    Enlace del recurso
    Enlace del recurso
    First CNGS events detected by LVD
  15. 315
    “…Then, we explore the results of calculations related to two different `realistic' astrophysical sites, (i) the supernova neutrino wind and (ii) neutron star mergers. …”
    Enlace del recurso
    Enlace del recurso
    Nuclear Structure Studies at ISOLDE and their Impact on the Astrophysical r-Process
  16. 316
    por Dar, Arnon, De Rujula, A.
    Publicado 2001
    “…Recent observations suggest that $\gamma$-ray bursts (GRBs) and their afterglows are produced by jets of highly relativistic cannonballs (CBs), emitted in supernova (SN) explosions. The CBs, reheated by their collision with the shell, emit radiation that is collimated along their direction of motion and Doppler-boosted to the typical few-hundred keV energy of the GRB. …”
    Enlace del recurso
    The Cannonball Model of Gamma Ray Bursts: high-energy neutrinos and $\gamma$-rays
  17. 317
    “…A preference for left-handed molecules was found, and enantiomeric excesses as high as 0.02% were estimated for molecules in the electromagnetic conditions expected from a core-collapse supernova. Key Words: Amino acids—Supernovae—Antineutrinos—Enantiomeric excess—Chirality. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
    Selection of Amino Acid Chirality via Neutrino Interactions with (14)N in Crossed Electric and Magnetic Fields
  18. 318
    “…In this talk we review briefly the basic features of non-critical (dissipative) String Cosmologies, and we confront some of these models with supernova data. We pay particular attention to the off-shell and dilaton contributions to the dynamical evolution equations of the non-critical string Universe, as well as the Boltzmann equation for species abundances. …”
    Enlace del recurso
    Enlace del recurso
    Relaxation dark energy in non-critical string cosmologies and astrophysical data
  19. 319
    por Giani, S
    Publicado 1997
    “…Assuming this is true, a well known enigma on the arrival times of the neutrino bursts from the SN1987A supernova can be explained quite naturally. Finally, experimental research is proposed to verify the theory.…”
    Enlace del recurso
    On velocities beyond the speed of light $c$
  20. 320
    por Setti, G
    Publicado 1977
    “…However, those circumstances are considered here whereby huge amounts of relativistic and ultra-relativistic particles such as one finds in (a) cosmic rays, (b) supernova remnants and (c) radio galaxies and quasars are produced. (0 refs).…”
    Enlace del recurso
    Enlace del recurso
    Accelerators in the sky
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