The compacta X in $S^n$ for which Sh(X) = Sh($S^k$) is equivalent to $S^n$-X ≈ $S^n$-$S^k$

فرآوری آلیاژهای Pb(1-x) Sn (x) Te و بررسی مشخصات ریزساختاری آنها

Chandra OBSERVATIONS OF TYPE IA SUPERNOVAE: UPPER LIMITS TO THE X-RAY FLUX OF SN 2002BO, SN 2002IC, SN 2005GJ, AND SN 2005KE

We set sensitive upper limits to the X-ray emission of four Type Ia supernovae (SNe Ia) using the Chandra X-ray Observatory. SN 2002bo, a normal, although reddened, nearby SN Ia, was observed 9.3 days after explosion. For an absorbed, high temperature bremsstrahlung model the flux limits are 3.2 × 10 ergs cm s (0.5–2 keV band) and 4.1 × 10 ergs cm s (2–10 keV band). Using conservative model ass...

X-ray Evolution of SN 1987A

The X-ray observations of SN 1987A over the previous 20 years have seen the emergence of soft X-rays from the interaction of the explosion shock wave with the ambient medium. This shock wave is now interacting strongly with the inner ring and might have passed already the highest density regions. The emission can be described by thermal models with temperatures of ∼0.28 keV and ∼2.8+0.7 −1.0 ke...

Isospin dependent multi - fragmentation in 112 Sn + 112 Sn and 124 Sn + 124 Sn collisions

Significant differences in the relationships between fragment, neutron, and charged particle multiplicities were found between Sn+Sn and Sn+Sn collisions at 40 MeV/A. In this paper we explore the possibility to explain this phenomenon in the framework of percolation models, and find, that the results are only reproducible in part.

Isospin dependent multifragmentation in 112 Sn 1 112 Sn and 124 Sn 1 124 Sn collisions

Percolation models have proven highly successful in the simulation of multifragmentation reactions in the past @1,2#. Within these models, fragmentation is described by first distributing a set of points or sites, each representing a nucleon, on a three-dimensional lattice, which represents the bonds between the sites. In the case of a simple rectangular lattice, each site is connected to six n...