411 citations · 1.8k across the 116 of their papers we have counts for
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The X-ray background and the ROSAT Deep Surveys
Guenther Hasinger, Gianni Zamorani
In this article we review the measurements and understanding of the X-ray background (XRB), discovered by Giacconi and collaborators 35 years ago. We start from the early history a…
A possible orbital period for the dwarf nova V1101 Aql
Nicola Masetti, Massimo Della Valle
We have performed a Discrete Fourier Transform on 136 CCD B, V and R frames of the Z Cam-type dwarf nova V1101 Aql. Our analysis indicates as possible orbital period P_orb =3.46 ho…
Spectropolarimetry of the Circinus Galaxy
E. Oliva, A. Marconi, A. Cimatti +1
High quality 4500-6800 A spectropolarimetric observations of the Circinus galaxy are reported. These show polarized and relatively broad (FWHM~3300 km/s) Halpha (as well as margina…
Gravitational Waves Generated by Globular Cluster Systems Collapse
R. Capuzzo-Dolcetta, P. Miocchi
According to the hypothesis that AGNs are massive black holes and the mass which feeds them is made of stars belonging to globular clusters frictionally decayed and tidally destroy…
Hipparcos Positioning of Geminga : How and Why
P. A. Caraveo, M. G. Lattanzi, G. Massone +4
Accuracy in the absolute position in the sky is one of the limiting factors for pulsar timing, and timing parameters have a direct impact on the understanding of the physics of Iso…
Galactic Nuclei Activity Sustained by Globular Cluster Mass Accretion
R. Capuzzo-Dolcetta, P. Miocchi
The decay of globular clusters to the center of their mother galaxy corresponds to carrying a quantity of mass sufficient to sustain the gravitational activity of a small pre-exist…