28 citations · 45 across the 7 of their papers we have counts for
8 papers
A Deep uGMRT view of the ultra steep spectrum radio halo in Abell 521
Ramananda Santra, Ruta Kale, Simona Giacintucci +8
We present the first detailed analysis of the ultra-steep spectrum radio halo in the merging galaxy cluster Abell 521, based on upgraded Giant Metrewave Radio telescope (uGMRT) obs…
The HELLAS2XMM Survey. XII. The infrared/sub-millimeter view of an X-ray selected Type 2 quasar at z=2
C. Vignali, F. Pozzi, J. Fritz +11
We present multi-wavelength observations (from optical to sub-millimeter, including Spitzer and SCUBA) of H2XMMJ 003357.2-120038 (also GD158_19), an X-ray selected, luminous narrow…
Multi-wavelength data handling in current and future surveys: the possible role of Virtual Observatory
C. Vignali, F. Fiore, A. Comastri +5
Here we review some of the main issues related to multi-wavelength source identification and characterization, with particular emphasis on the field of X-ray surveys carried out ov…
On the peculiar properties of the narrow-line quasar PG 1543+489
C. Vignali, E. Piconcelli, S. Bianchi +1
We present the analysis of four XMM-Newton observations of the narrow-line quasar PG 1543+489 at z=0.400 carried out over a rest-frame time-scale of about three years. The X-ray sp…
On the transmission- to reprocessing-dominated spectral state transitions in Seyfert 2 galaxies
M. Guainazzi, A. C. Fabian, K. Iwasawa +2
We present Chandra and XMM-Newton observations of a small sample (11 objects) of optically-selected Seyfert~2 galaxies, for which ASCA and BeppoSAX had suggested Compton-thick obsc…
The complex 0.1-200 keV spectrum of the Seyfert 1 Galaxy NGC4593
M. Guainazzi, G. C. Perola, G. Matt +5
We report on the first observation of the Seyfert 1 galaxy NGC4593 in the 0.1-200 keV band, performed with the BeppoSAX observatory. Its spectral components are for the first time…