325,598 research outputs found
"I pittori dell'Italia da ringiovanire e da lavare": Federigo Tozzi a Roma tra Secessione e tradizione
No full textFederigo Tozzi critico d'arte a Roma nel suo ultimo quinquennio di vita (1915-20)
Sulle strade di Benedetto Tozzi
No full textIl saggio contestualizza un pittore trascurato dagli studi, ma che ebbe un'intensa stagione di produzione tra gli anni Trenta e Cinquanta a Roma, Tripoli e Rod
Valero, S. y Santos García, E. Manuel Zapata Olivella. Hacia una medicina nacional en el Pacífico colombiano. Cartagena de Indias: Universidad de Cartagena - Laboratorio Editorial CILA, 2023, 294 p.
No full textRevisión del libro Manuel Zapata Olivella. Hacia una medicina nacional en el Pacífico colombiano por S. Valero y E. Santos GarcíaFil: Tozzi, Liliana. Universidad Nacional de Córdoba, Argentina
Scaling laws in X-ray galaxy clusters at redshift between 0.4 and 1.3
No full textWe present a study of the integrated physical properties of
a sample of 28 X-ray galaxy clusters observed with Chandra at
a redshift between 0.4 and 1.3. In particular, we have twelve objects in
the redshift range 0.4–0.6, five between 0.6 and 0.8, seven between
0.8 and 1 and four at , compounding the largest sample
available for such a study. We focus particularly on the properties
and evolution of the X-ray scaling laws.
We fit both a single and
a double model with the former which provides a good representation
of the observed surface brightness profiles, indicating that these
clusters do not show any significant excess in their central brightness.
By using the best-fit parameters of the model together with
the measured emission-weighted temperature (in the range 3–11 keV),
we recover gas luminosity, gas mass and total gravitating mass
out to R500. We observe scaling relations steeper than expected from
the self-similar model by a significant (>) amount in the
and relations and by a marginal value in the and relations. The degree of evolution of the
relation is found to be consistent with the
expectation based on the hydrostatic equilibrium for gas within
virialized dark matter halos. We detect hints of negative
evolution in the , and relations,
thus suggesting that systems at higher redshift have lower X-ray
luminosity and gas mass for fixed temperature.
In particular,
when the 16 clusters at are considered, the evolution becomes
more evident and its power-law modelization is a statistically
good description of the data.
In this subsample, we also find significant evidence for
positive evolution, such as , in the
relation, where the entropy S is defined as
and is measured at 0.1.
Such results point toward a scenario in which a relatively lower gas
density is present in high-redshift objects, thus implying a
suppressed X-ray emission, a smaller amount of gas mass and a higher
entropy level. This represents a non-trivial constraint for models
aiming at explaining the thermal history of the intra-cluster medium
out to the highest redshift reached so far
Carlo Socrate
No full textL'attività del pittore Carlo Socrate (1889-1967) fino al 1920 e i suoi rapporti con Federigo Tozzi
Federigo Tozzi, Giovani, Edizione critica a cura di Paola Salatto, Edizioni di Storia e Letteratura, 2018
No full textFederigo Tozzi, Giovani, Edizione critica a cura di Paola Salatto, Prefazione di Romano Luperini, Edizioni di Storia e Letteratura, 2018 (Collana BIT&S. Biblioteca Italiana Testi e Studi – Edizione nazionale dell’opera omnia di Federigo Tozzi).https://sites.unimi.it/oec/schede.php
Pasquarosa
No full textL'attività della pittrice Pasquarosa Bertoletti (1896-1973) fino al 1920 e i suoi rapporti con Federigo Tozzi
Ferruccio Ferrazzi
No full textL'attività del pittore Ferruccio Ferrazzi (1891-1978) fino al 1920 e i suoi rapporti con Federigo Tozzi
Attilio Selva
No full textL'attività dello scultore Attilio Selva (1888-1970) fino al 1920 e i suoi rapporti con Federigo Tozzi
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