منابع مشابه
Evidence for nanoparticles in microwave-generated fireballs observed by synchrotron x-ray scattering.
The small-angle x-ray scattering method has been applied to study fireballs ejected into the air from molten hot spots in borosilicate glass by localized microwaves [V. Dikhtyar and E. Jerby, Phys. Rev. Lett. 96 045002 (2006)10.1103/PhysRevLett.96.045002]. The fireball's particle size distribution, density, and decay rate in atmospheric pressure were measured. The results show that the fireball...
متن کاملaltitude fireballs – manifestations of the mirror world?
Exotic meteoritic phenomena: The Tunguska event and anomalous low altitude fireballs – manifestations of the mirror world? Abstract There are a number of very puzzling meteoritic events including (a) The Tunguska event. It is the only known example of a low altitude atmospheric explosion. It is also the largest recorded event. Remarkably no fragments or significant chemical traces have ever bee...
متن کاملSpectral Implications of Variability in GRB Fireballs∗
Ravi P. Pilla Department of Physics, Columbia University, New York, NY 10027, USA; [email protected] Abraham Loeb Astronomy Department, Harvard University 60 Garden Street, Cambridge, MA 02138, USA; [email protected] Cosmological γ-ray bursts originate from relativistic winds. Temporal fluctuations in the wind velocity can give rise to internal shocks which dissipate a significa...
متن کاملFireballs with a Neutron Component
Standard GRB fireballs must carry free neutrons. This crucially changes the mechanism of fireball deceleration by an external medium. As the ion fireball decelerates, the coasting neutrons form a leading front. They gradually decay, leaving behind a relativistic trail of decay products mixed with the ambient medium. The ion fireball sweeps up the trail and drives a shock wave in it. Thus, obser...
متن کاملCold Kaons from Hot Fireballs
The E814-collaboration has found a component of very low m t K + mesons with a slope parameter of T 15 MeV. We will present a scenario which explains the observed slope parameter and which allows us to predict the expected slope parameter for kaons produced in heavier systems such as Au+Au. Implications for the restoration of chiral symmetry in relativistic heavy ion collisions are discussed.
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ژورنال
عنوان ژورنال: Nature
سال: 1882
ISSN: 0028-0836,1476-4687
DOI: 10.1038/026245a0