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- Istituto Nazionale di Fisica Nucleare, Sezione di PaviaIT157 papers
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21 papers · 1 filter
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…
The 2008 May burst activation of SGR 1627-41
P. Esposito, G. L. Israel, S. Zane +16
In May 2008 the soft gamma-ray repeater SGR 1627-41 resumed its bursting activity after nearly a decade of quiescence. After detection of a bright burst, Swift pointed its X-ray te…
Gravitational Lensing Constraints on Dynamical and Coupled Dark Energy
G. La Vacca, L. P. L. Colombo
Upcoming Weak Lensing (WL) surveys can be used to constrain Dark Energy (DE) properties, namely if tomographic techniques are used to improve their sensitivity. In this work, we us…
Dark Matter - Dark Energy coupling biasing parameter estimates from CMB data
Giuseppe La Vacca, Loris P. L. Colombo, Luca Vergani +1
When CMB data are used to derive cosmological parameters, their very choice does matter: some parameter values can be biased if the parameter space does not cover the "true" model.…
PSR J0737-3039: Interacting Pulsars in X-Rays
A. Pellizzoni, A. Tiengo, A. De Luca +2
We present the results of a ~230 ks long X-ray observation of the relativistic double-pulsar system PSR J0737-3039 obtained with the XMM-Newton satellite in 2006 October. We confir…
Discovery of underground argon with low level of radioactive 39Ar and possible applications to WIMP dark matter detectors
C. Galbiati, R. Purtschert
We report on the first measurement of 39Ar in argon from underground natural gas reservoirs. The gas stored in the US National Helium Reserve was found to contain a low level of 39…