8.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT4.1k papers
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- Università degli Studi del Piemonte Orientale “Amedeo Avogadro”IT1.5k papers
211 papers · 1 filter
Active Galactic Nuclei, Radio Jets and Acceleration of UHECRs
S. Massaglia
We present the general properties of the Active Galactic Nuclei (AGNs) and discuss the origin and structure of jets that are associated to a fraction of these objects. We then we a…
On the antimatter signatures of the cosmological dark matter subhalos
Julien Lavalle
While the PAMELA collaboration has recently confirmed the cosmic ray positron excess, it is interesting to review the effects of dark matter (DM) subhalos on the predicted antimatt…
Nucleosynthetic osmium isotope anomalies in acid leachates of the Murchison meteorite
L. Reisberg, N. Dauphas, A. Luguet +3
We present osmium isotopic results obtained by sequential leaching of the Murchison meteorite, which reveal the existence of very large internal anomalies of nucleosynthetic origin…
Cosmological constraints on a light non-thermal sterile neutrino
Mario A. Acero, Julien Lesgourgues
Although the MiniBooNE experiment has severely restricted the possible existence of light sterile neutrinos, a few anomalies persist in oscillation data, and the possibility of ext…
Modelling the broad-band spectra of X-ray emitting GPS galaxies
L. Ostorero, R. Moderski, L. Stawarz +5
The study of the broad-band emission of GHz-Peaked-Spectrum (GPS) radio galaxies is a powerful tool to investigate the physical processes taking place in the central, kpc-sized reg…
Air Shower Measurements with the LOPES Radio Antenna Array
A. Haungs
LOPES is set up at the location of the KASCADE-Grande extensive air shower experiment in Karlsruhe, Germany and aims to measure and investigate radio pulses from Extensive Air Show…
A five-wave HLL Riemann solver for relativistic MHD
A. Mignone, M. Ugliano, G. Bodo
We present a five-wave Riemann solver for the equations of ideal relativistic magnetohydrodynamics. Our solver can be regarded as a relativistic extension of the five-wave HLLD Rie…
The s process in massive stars at low metallicity. Effect of primary N14 from fast rotating stars
M. Pignatari, R. Gallino, G. Meynet +3
The goal of this paper is to analyze the impact of a primary neutron source on the s-process nucleosynthesis in massive stars at halo metallicity. Recent stellar models including r…
Astrometric effects of non-uniform telescope throughput
M. Gai, R. Cancelliere
In real telescopes, the optical parameters evolve with time, and the degradation is often not uniform. This introduces variations in the image profile and therefore photo-centre di…
Gamma-ray burst detection with the AGILE mini-calorimeter
M. Marisaldi, C. Labanti, F. Fuschino +70
The Mini-Calorimeter (MCAL) instrument on-board the AGILE satellite is a non-imaging gamma-ray scintillation detector sensitive in the 300keV-100MeV energy range with a total on-ax…
Frequency spectra of cosmic ray air shower radio emission measured with LOPES
A. Nigl
AIMS: We wish to study the spectral dependence of the radio emission from cosmic-ray air showers around 100 PeV (1017 eV). METHODS: We observe short radio pulses in a broad frequen…
Direction identification in radio images of cosmic-ray air showers detected with LOPES and KASCADE
A. Nigl
AIMS: We want to understand the emission mechanism of radio emission from air showers to determine the origin of high-energy cosmic rays. Therefore, we study the geometry of the ai…
Testing the inverse-Compton catastrophe scenario in the intra-day variable blazar S5 0716+71, III. Rapid and correlated flux density variability from radio to sub-mm bands
L. Fuhrmann, T. P. Krichbaum, A. Witzel +22
The BL Lac object S5 0716+71 was observed in a global multi-frequency campaign to search for rapid and correlated flux density variability and signatures of an inverse-Compton (IC)…
Multiwavelength observations of 3C 454.3. I. The AGILE 2007 November campaign on the "Crazy Diamond"
S. Vercellone, A. W. Chen, V. Vittorini +68
[Abridged] We report on a multiwavelength observation of the blazar 3C 454.3 (which we dubbed "crazy diamond") carried out on November 2007 by means of the astrophysical satellites…
Stability and structure of analytical MHD jet formation models with a finite outer disk radius
Matthias Stute, Kanaris Tsinganos, Nektarios Vlahakis +2
(Abridged) Finite radius accretion disks are a strong candidate for launching astrophysical jets from their inner parts and disk-winds are considered as the basic component of such…
Galactic secondary positron flux at the Earth
T. Delahaye, F. Donato, N. Fornengo +5
Secondary positrons are produced by spallation of cosmic rays within the interstellar gas. Measurements have been typically expressed in terms of the positron fraction, which exhib…
Infall Regions and Scaling Relations of X-ray Selected Groups
Kenneth Rines, Antonaldo Diaferio
We use the Fifth Data Release of the Sloan Digital Sky Survey to study X-ray-selected galaxy groups and compare their properties to clusters. We search for infall patterns around t…
AGILE detection of variable gamma-ray activity from the blazar S5 0716+714 in September-October 2007
A. W. Chen, F. D'Ammando, M. Villata +65
We report the gamma-ray activity from the intermediate BL Lac S5 0716+714 during observations acquired by the AGILE satellite in September and October 2007. These detections of act…
Recent star formation in nearby 3CR radio-galaxies from UV HST observations
Ranieri D. Baldi, Alessandro Capetti
We analyzed HST images of 31 nearby (z <~ 0.1) 3CR radio-galaxies. We compared their UV and optical images to detect evidence of recent star formation. Six objects were excluded be…
X-ray clusters of galaxies in conformal gravity
Antonaldo Diaferio, Luisa Ostorero
We run adiabatic N-body/hydrodynamical simulations of isolated self-gravitating gas clouds to test whether conformal gravity, an alternative theory to General Relativity, is able t…
Antimatter cosmic rays from dark matter annihilation: First results from an N-body experiment
J. Lavalle, E. Nezri, F. -S. Ling +2
[Abridged]. We take advantage of the galaxy-like 3D dark matter map extracted from the HORIZON Project results to calculate the positron and antiproton fluxes from dark matter anni…
The AGILE Mission
M. Tavani
AGILE is an Italian Space Agency mission dedicated to the observation of the gamma-ray Universe. The AGILE very innovative instrumentation combines for the first time a gamma-ray i…
Simulating radiative astrophysical flows with the PLUTO code: A non-equilibrium, multi-species cooling function
O. Tesileanu, A. Mignone, S. Massaglia
Time-dependent cooling processes are of paramount importance in the evolution of astrophysical gaseous nebulae and, in particular, when radiative shocks are present. The present wo…
How the Scalar Field of Unified Dark Matter Models Can Cluster
Daniele Bertacca, Nicola Bartolo, Antonaldo Diaferio +1
We use scalar-field Lagrangians with a non-canonical kinetic term to obtain unified dark matter models where both the dark matter and the dark energy, the latter mimicking a cosmol…