124 citations · 235 across the 2 of their papers we have counts for
3 papers
astro-ph2006★ 124 cited
Rapid N_H changes in NGC 4151
S. Puccetti, F. Fiore, G. Risaliti +4
We have analyzed the two longest (elapsed time > 3 days) BeppoSAX observations of the X-ray brightest Seyfert galaxy, NGC 4151, to search for spectral variability on time-scales fr…
astro-ph2006★ 111 cited
A new formulation of the Type Ia SN rate and its consequences on galactic chemical evolution
F. Matteucci, N. Panagia, A. Pipino +3
In recent papers Mannucci et al. (2005, 2006) suggested, on the basis of observational arguments, that there is a bimodal distribution of delay times for the explosion of Type Ia S…
astro-ph2003
Rapid N_H Changes in NGC 4151
S. Puccetti, G. Risaliti, F. Fiore +4
We have analyzed two long BeppoSAX observations of the bright Seyfert galaxy NGC 4151, searching for short timescale (10-200 ksec) X-ray spectral variability. The light curve of a…