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Mysterious cosmic explosion surprises astronomers studying the distant x-ray universe
cosmic explosion astronomers distant x-ray universe
2017/4/27
A mysterious flash of X-rays has been discovered by NASA’s Chandra X-ray Observatory in the deepest X-ray image ever obtained. This source likely comes from some sort of destructive event, but it may ...
Nearby massive star explosion 30 million years ago equaled detonation of 100 million suns
massive star explosion 30 million years ago detonation of 100 million suns
2016/5/6
A giant star that exploded 30 million years ago in a galaxy near Earth had a radius prior to going supernova that was 200 times larger than our sun, according to astrophysicists at Southern Methodist ...
What is 10 miles across,but powers an explosion brighter than the Milky Way?（图）
10 miles across explosion brighter the Milky Way
2016/1/22
Right now, astronomers are viewing a ball of hot gas billions of light years away that is radiating the energy of hundreds of billions of suns. At its heart is an object a little larger than 10 miles ...
What is 10 miles across,but powers an explosion brighter than the Milky Way?
10 miles across explosion brighter the Milky Way
2016/2/22
Right now, astronomers are viewing a ball of hot gas billions of light years away that is radiating the energy of hundreds of billions of suns. At its heart is an object a little larger than 10 miles ...
We consider the explosion problem in an incompressible flow introduced in [5]. We use a novel Lp − L∞ estimate for elliptic advection-diffusion problems to show that the explosion threshold obey...
Substantiation of Thermodynamic Criteria of Explosion Safety in Process of Severe Accidents in Pressure Vessel Reactors
severe accident hydrogenous steam-air mixture fuel-containing masses steam-gas explosion criteria model
2012/4/19
The paper represents original development of thermodynamic criteria of occurrence conditions of steam-gas explosions in the process of severe accidents. The received results can be used for modelling ...
Lepton flavor violating New Physics and supernova explosion
Lepton flavor violating New Physics supernova explosion
2011/1/13
Electrons and electron neutrinos in the inner core of the core-collapse supernova are highly degenerate and therefore numerous during a few seconds of explosion. In contrast, leptons of other flavors ...
Quark nova imprint in the extreme supernova explosion SN 2006gy: the advent of the Quark Star
Quark nova imprint the extreme supernova explosion SN 2006gy
2011/1/11
The existence of quark stars has until now been purely hypothetical. In this work, we uncover undeniable evidence of these exotic objects with far reaching implications to various branches of physics ...
The revival of an explosion mechanism of massive stars - the quark hadron phase transition during the early post bounce phase of core collapse supernovae
Core collapse supernovae protoneutron stars general relativity radiation hydrodynamics
2010/11/16
We explore explosions of massive stars, which are triggered via the quark hadron phase transition during the early post bounce phase of core collapse supernovae. The onset of quark matter is favored u...
Rare-gas clusters in intense VUV, XUV and soft x-ray pulses: Signatures of the transition from nanoplasma-driven cluster expansion to Coulomb explosion in ion and electron spectra
VUV XUV soft x-ray pulses
2010/11/16
We investigate the wavelength dependent ionization, heating, and expansion dynamics of medium-sized rare-gas clusters (Ar$_{923}$) under intense femtosecond short-wavelength free electron laser pulse...
Using the X-ray Morphologies of Young Supernova Remnants to Constrain Explosion Type, Ejecta Distribution, and Chemical Mixing
methods data analysis supernova remnants techniques image processing X-rays ISM
2010/11/10
Supernova remnants (SNRs) are a complex class of sources, and their heterogeneous nature has
hindered the characterization of their general observational properties. To overcome this challenge,in thi...
Evolution of gaseous disk viscosity driven by supernova explosion. II. Structure and emissions from star-forming galaxies at high redshift
gaseous disk viscosity driven supernova explosion
2011/1/10
(Abridged) High redshift galaxies are undergoing intensive evolution of dynamical structure and morphologies. We incorporate the feedback into the dynamical equations through mass dropout and angular ...
Determination of Nitrobenzene in Water and Ice Samples Collected from the Songhua River after an Explosion of a Petrochemical Plant and Investigation on Enclosing Behavior of Nitrobenzene into Ice
Nitrobenzene Ice Samples Collected the Songhua River an Explosion of a Petrochemical Plant and Investigation f Nitrobenzene
2010/9/20
In this study, nitrobenzene in water and ice samples collected from the Songhua River after the explosion of a petrochemical plant was determined by GC/MS. The results showed that nitrobenzene was de...
Self-sustained oscillator as a model for explosion quakes at Stromboli Volcano
Self-sustained oscillator model for explosion quakes Stromboli Volcano
2009/11/12
We analyze seismic signals produced by explosion-quakes at Stromboli Volcano. We use standard nonlinear procedures to search a low-order effective dynam-ics. The dimension of the reconstructed phase s...
Unusual Explosion Sparks New Insight Into the Life of Stars（图）
Unusual Explosion Sparks New Insight the Life of Stars
2009/11/24
Scientists in California have discovered a new way that stars explode, in research funded by the National Science Foundation (NSF).The discovery hinges on an unusual explosion in the galaxy NGC 1821, ...