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Scaling laws for the energy transfer in space plasma turbulence
Sorriso-Valvo, Luca; Marino, Raffaele
One characteristic trait of space plasmas is the multi-scale dynamics resulting from non-linear transfers and conversions of various forms of energy. Routinely evidenced in a range from the large-scale solar structures down to the characteristic scales of ions and electrons, turbulence is a major cross-scale energy transfer mechanism in space plas…
Dusty star-forming galaxies at high redshift
Casey, Caitlin M.; Narayanan, Desika; Cooray, Asantha
Far-infrared and submillimeter wavelength surveys have now established the important role of dusty, star-forming galaxies (DSFGs) in the assembly of stellar mass and the evolution of massive galaxies in the Universe. The brightest of these galaxies have infrared luminosities in excess of 1013 L⊙ with implied star-formation ra…
The astrophysics of the intracluster plasma
Lapi, Andrea; Cavaliere, Alfonso
Since 1971 observations in X rays of several thousands of galaxy clusters have uncovered huge amounts of hot baryons filling up the deep gravitational potential wells provided by dark matter (DM) halos with masses of some 1015 M⊙ and sizes of millions of light-years. At temperatures T∼108 K and with average densiti…
The age of globular clusters
Krauss, L. M.
I review here recent developments which have affected our understanding of both the absolute age of globular clusters and the uncertainties in this age estimate, and comment on the implications for cosmological models. This present estimate is in agreement with the range long advocated by David Schramm. The major uncertainty in determining ages of…