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Short-lived nuclei in the Galaxy and in the early solar system: crucial tests expected from gamma-ray line observations
Maurizio Busso, Stefano Ciprini, Francesca Marcucci
We discuss some open problems in the understanding of the Early Solar System abundances of short-lived radioactive isotopes, and the important clarification expected on this matter…
Mid-infrared photometry of carbon stars and perspectives for surveys in the Magellanic Clouds from Dome-C
Stefano Ciprini, Maurizio Busso
A preliminary analysis of the data from the MSX space infrared satellite, seems to confirm that the [8.8]-[12.5] micron color index is well correlated with the mass-loss rates in c…
Coordinated Multiwavelength Observations of BL Lacertae in 2000
M. Boettcher
BL Lacertae was the target of an extensive multiwavelength monitoring campaign in the second half of 2000. Simultaneous or quasi-simultaneous observations were taken at radio (UMRA…
Discovery, identification, and study of variability in gamma-ray point sources
M. Fiorucci, N. Marchili, G. Tosti +3
We present preliminary results of a statistical analysis obtained with a sample of blazars observed at the Perugia Astronomical Observatory since 1992. We briefly show how these st…
Synchrotron-Self Compton Spectral Evolution of PKS 2155-304
Stefano Ciprini, Gino Tosti
The high frequency peaked blazar PKS 2155-304 is one of the brightest and most intensively studied prototype of BL Lac objects. Gamma-rays from PKS 2155-304 have been detected from…
Optical and radio behaviour of the BL Lacertae object 0716+714
C. M. Raiteri, M. Villata, G. Tosti +24
Eight optical and four radio observatories have been intensively monitoring the BL Lac object 0716+714 in the last years: 4854 data points have been collected in the UBVRI bands si…