The contribution of INTEGRAL to blazar science (2008)
Foschini, Luigi, Bianchin, Valentina
We review 6 years of INTEGRAL observations of blazars, from Target-Of-Opportunity (TOO) to normal observations to coordinated campaigns, from the new and unexpected discoveries to the improvements in...
High energy properties of PKS 1830-211 (2008)
Zhang, Shu, Chen, Yu-peng, Collmar, Werner, Foschini, Luigi, Li, Ti-Pei, Torres, Diego F., ...
We report on an analysis of X- and $\gamma$-ray observations of PKS 1830-211, based on the long-term campaigns carried out by \emph{INTEGRAL} and COMPTEL. The \emph{INTEGRAL} data currently available...
High-energy properties of PKS 1830−211 (2008)
Zhang, Shu, Chen, Yu-Peng, Collmar, Werner, Foschini, Luigi, Li, Ti-Pei, Torres, Diego F., ...
INTEGRAL and Swift Observations of Blazars in Outburst (2007)
Pian, Elena, Foschini, Luigi, Ghisellini, Gabriele
The blazars 3C 454.3, PKS 0537-441 and PKS 2155-304 are traditionally known to be among the most active sources of this class. They emit at all frequencies, up to the gamma-rays, and are good probes...
Identifications of Four INTEGRAL Sources in the Galactic Plane via Chandra Localizations (2006)
Tomsick, John A., Chaty, Sylvain, Rodriguez, Jerome, Foschini, Luigi, Walter, Roland, Kaaret, Philip
Hard X-ray imaging of the Galactic plane by the INTEGRAL satellite is uncovering large numbers of 20-100 keV "IGR" sources. We present results from Chandra, INTEGRAL, optical, and IR observations of...
INTEGRAL observations of the blazar 3C454.3 in outburst (2006)
Pian, Elena, Foschini, Luigi, Beckmann, Volker
In Spring 2005, the blazar 3C454.3 underwent a dramatic outburst at all wavelengths from mm to X-rays. This prompted INTEGRAL observations, accomplished in 15-18 May 2005. The source was detected by...
Grandi, Paola, Foschini, Luigi, Masetti, Nicola, Palazzi, Eliana
We report the discovery of a Narrow Line QSO located at about 1.3' from the Broad Line Radio Galaxy 3C445. The source,1WGA J2223.7-0206, although already revealed by ROSAT has never been optically...
On the atmospheric fragmentation of small asteroids (2000)
It is known, from observational data recorded from airbursts, that small asteroids breakup at dynamical pressures lower than their mechanical strength. This means that actual theoretical models are...
On the broadening of emission lines in active galactic nuclei (2000)
Recent works, both theoretical and observational, have suggested that turbulence could play a non-negligible role in the broadening of emission lines in active galactic nuclei. The purpose of this...
Leonid Electrophonic Bursters (2000)
Beech, Martin, Foschini, Luigi
We investigate the conditions under which Leonid meteoroids might generate short duration (burster) electrophonic sounds. A `first order' theory is employed to estimate the approximate electron...
Can we really rule out the existence of antistars? (2000)
The existence of large domains of antimatter is still an open question. Some space mission and experiments in the near future are expected to give reasonable answer to that question. Meanwhile, we...
The impact hazard from small asteroids: current problems and open questions (1999)
The current philosophy of impact hazard considers the danger from small asteroids negligible. However, several facts claim for a revision of this philosophy. In this paper, some of these facts are...
Questions on the concept of time (1999)
Some notes and questions about the concept of time are exposed. Particular reference is given to the problem in quantum mechanics, in connection with the indeterminacy principle.
A solution for the Tunguska event (1998)
This letter presents a new solution for the Tunguska event of June 30th, 1908. The solution has been obtained starting from seismic data, is in fair agreement with the observational evidence, and...
The "fingers" of the physics (1998)
The passage of particles through matter is one of the principal ways to investigate nature. In this article, we would like to outline the most important stages in the development of the theory about...
Short range gravitational fields: Rise and fall of the fifth force (1998)
During the 80's, some experiments and the repetitions of old ones, lead to the hypothesis of a fifth force. Nevertheless, a more accurate research was not able to confirm this hypothesis. This...
Is Science going through a critical stage? (1998)
The unexpected discoveries at the beginning of the century, particularly thanks to Heisenberg, Bohr, and Godel, has driven the science to drastic changes, opening new, extraordinary, and infinite...
On January 19, 1993, a very bright bolide (peak magnitude -23) crossed the sky of Northern Italy, ending with an explosion approximately over the town of Lugo (Emilia Romagna, Italy). The explosion...
On the interaction of radio waves with meteoric plasma (1998)
In this paper, a meteoric plasma is analyzed from a physical viewpoint, with particular emphasis on its interaction with radio waves. The attention is drawn to some macroscopic characteristics of a...
The meteoroid hazard for space navigation (1998)
Thanks to post-flight analyses of several artificial satellites carried out during last years, the meteoroids hazard for space navigation and in-orbit satellites permanence is now clear. Even if...
Electromagnetic interferences from plasmas generated in meteoroids impacts (1998)
It is shown that the plasma, generated during an impact of a meteoroid with an artificial satellite, can produce electromagnetic radiation below the microwave frequency range. This interference is...
On the logic of quantum physics and the concept of the time (1998)
The logic--linguistic structure of quantum physics is analysed. The role of formal systems and interpretations in the representation of nature is investigated. The problems of decidability,...