1,721,321 research outputs found
AMMONIACA COME GAS IONIZZANTE NELLA GC-MS-NCI DI PESTICIDI ORGANOFOSFATI
No full textADDAURA -MONDELLO (PALERMO
Reconciling inflation with openness
No full textIt is already understood that the increasing observational evidence for an open universe can be reconciled with inflation if our horizon is contained inside one single huge bubble nucleated during the inflationary phase transition. In this frame of ideas, we show here that the probability of living in a bubble with the right Ω0(≈0.2) can be comparable to unity, rather than infinitesimally small. For this purpose we modify both quantitatively and qualitatively an intuitive toy model of ours. Therefore, inferring from the observations that Ω0<1 not only does not conflict with the inflationary paradigm, but rather supports therein the occurrence of a primordial phase transition
Peaks and Rings on the Cosmic Microwave Background
No full textWe simulate maps of the microwave background radiation for a model of inflationary primordial voids plus standard cold dark matter. For some values of the parameters, we find in the angular power spectrum a well-defined second peak at l~1000, correlated with the size, amplitude, and number of the primordial voids. The next generation of microwave background maps will be able to test the scenario of inflationary first-order phase transitions
Idrocarburi clorurati volatili in neve superficiale del Monte Melbourne e di Dome C e in neve di trincea del Rennick Nevè
No full textVolatile chlorinated hydrocarbons in Antarctica. A typical example of environmental global contamination
No full textSupernova Legacy Survey data are consistent with acceleration at z approximate to 3
No full textWe point out that the Type Ia supernovae in the SNLS dataset are consistent with an early beginning of the cosmic acceleration if dark energy interacts strongly with dark matter. We find that the acceleration could have started at redshift z approximate to 3 and higher
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