Results 31 to 40 of about 62,408 (256)
Entropy Generation Due to the Heat Transfer for Evolving Spherical Objects
Entropy, 2018 Heat transfer accompanying entropy generation for the evolving mini and microbubbles in solution is discussed based on the explicit solutions for the hydrodynamic equations related to the bubble motion. Even though the pressure difference between the gas
Ho-Young Kwak
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The Astrophysical Journal, 2023 Supernova neutrinos are invaluable signals that offer information about the interior of supernovae. Because a nearby supernova can occur at any time, preparing for future supernova neutrino observation is an urgent task.
Akira Harada +8 more
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Significance of neutrino-neutrino interaction in neutrino oscillation in core-collapse supernova
Bibechana, 2014 We study the possibility of neutrino-neutrino interaction inside the neutrino core of supernova (ρ ≥ 1010 g/cc) and outside the neutrinosphere. The angular dependence of the neutrino-neutrino interaction Hamiltonian causes multi-angle effects that can ...
Prabandha Nakarmi, Jeevan Jyoti Nakarmi
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QUÍMICA ESTELAR E ESTRELAS APOCALÍPTICAS: ESTUDO COMPARATIVO
Colloquium Exactarum, 2012 All atoms existing in the Universe, except Hydrogen (H) and helium (He), arise from processes occurring in stars and their evolution. The stars transmute the H and He in other heavier elements through nuclear fusion and its process rolling, filling and ...
Nikele Milani +3 more
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Ghost particles in the universe: Neutrinos in astrophysics and cosmology
Mètode Science Studies Journal: Annual Review, 2017 Neutrinos are nearly massless and very difficult to detect because they interact so very weakly. Sixty years after seeing the first of these «ghost particles» we know a lot about their properties.
Georg Gottfried Raffelt
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First Observations of SN 1604 (Kepler’s Supernova)
Universe, 2021 A supernova close enough to the Earth is a spectacular event: it can appear as a “new star” as luminous as Venus, or even more, visible for several days.
Alessandro de Angelis, Selenia Broccio
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AIP Conference Proceedings, 2007 All core collapse supernovae are strongly aspherical. The "Bochum event," with velocity components displaced symmetrically about the principal H$ $ line, strongly suggests that SN 1987A was a bi-polar rather than a uni-polar explosion. While there is a general tendency to display a single prominant axis in images and spectropolarimetry, there is also ...
J. Craig Wheeler +4 more
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Limit on Supernova Emission in the Brightest Gamma-Ray Burst, GRB 221009A
The Astrophysical Journal Letters, 2023 We present photometric and spectroscopic observations of the extraordinary gamma-ray burst (GRB) 221009A in search of an associated supernova. Some past GRBs have shown bumps in the optical light curve that coincide with the emergence of supernova ...
Manisha Shrestha +32 more
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International Astronomical Union Colloquium, 1996 Radio observations have shown that some supernovae are powerful radio emitters which increase rapidly in brightness to radio luminosities which are hundreds to thousands of times greater than even the brightest known supernova remnant, Cas A. They then fade over a period of weeks, months, or years.
Richard A. Sramek +3 more
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Variable G versus the Accelerated Expansion of the Universe
Open Astronomy, 2017 It is shown that the hypothesis of permitting variability of the Newtonian constant G, increasing with the local density of dark matter, implies that there is no need for the introduction of a cosmological constant or accelerated expansion of the ...
Colenbrander Bernard G. +1 more
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