Results 51 to 60 of about 77,144 (213)
The high energy X-ray probe (HEX-P): science overview
Frontiers in Astronomy and Space SciencesTo answer NASA’s call for a sensitive X-ray observatory in the 2030s, we present the High Energy X-ray Probe (HEX-P) mission concept. HEX-P is designed to provide the required capabilities to explore current scientific questions and make new discoveries ...
Javier A. García +74 more
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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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The Status of Multi-Dimensional Core-Collapse Supernova Models [PDF]
Publications Astronomical Society of Australia, 2016 Models of neutrino-driven core-collapse supernova explosions have matured considerably in recent years. Explosions of low-mass progenitors can routinely be simulated in 1D, 2D, and 3D.
Bernhard Müller
semanticscholar +1 more source
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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iPTF16geu: A multiply imaged, gravitationally lensed type Ia supernova [PDF]
Science, 2016 Multiple images of a type Ia supernova General relativity indicates that any sufficiently massive object bends the path of light passing by it. This effect is known as gravitational lensing. Goobar et al.
A. Goobar +37 more
semanticscholar +1 more source
Supernova-scope for the direct search of Supernova axions [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 If a supernova explosion occurs within a few hundred parsecs from the Earth, a huge number of axions, in addition to neutrinos, may arrive at the Earth. In this paper, we discuss in detail the prospect of detecting those supernova axions by an axion helioscope. With the help of a pre-supernova neutrino alert system, it is possible to point a helioscope
Ge, Shao-Feng +7 more
openaire +2 more sources
How Tycho Brahe’s recordings in 1572 support SN 1572 as a type I(a) supernova
Frontiers in Astronomy and Space Sciences, 2023 The 450th anniversary of the discovery of the SN 1572 supernova event was celebrated in 2022. A closer look at the historical development of the field of supernova astronomy reveals the scientific importance of Tycho Brahe’s 1572 observations of this ...
Tobias C. Hinse +5 more
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The Carnegie Supernova Project I: analysis of stripped-envelope supernova light curves [PDF]
, 2017 Stripped-envelope (SE) supernovae (SNe) include H-poor (Type IIb), H-free (Type Ib) and He-free (Type Ic) events thought to be associated with the deaths of massive stars. The exact nature of their progenitors is a matter of debate.
F. Taddia +14 more
semanticscholar +1 more source
On the occurrence of fast neutrino flavor conversions in multidimensional supernova models [PDF]
Physical Review D, 2018 The dense neutrino medium in a core-collapse supernova or a neutron-star merger event can experience fast flavor conversions on time/distance scales that are much smaller than those of vacuum oscillations.
Sajad Abbar +4 more
semanticscholar +1 more source
ChemistryEurope, EarlyView.Reacting Bis2GaBr (Bis = CH(SiMe3)2) with Bis2AlH selectively yields Bis2GaH, a monomeric hydride in solution, characterized by diffusion ordered spectroscopy NMR, infrared spectroscopy and indirectly via hydrogallation. A one‐pot route enables frustrated Lewis pairs Bis2EOPtBu2 (E = Al, Ga), with the gallium analog splitting H2 and showing a dynamic ...
Julian Buth +7 more
wiley +1 more source