7.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Institute for AstrophysicsIT1.2k papers
- University of BolognaIT1.1k papers
- Centre National de la Recherche ScientifiqueFR830 papers
- Leiden UniversityNL562 papers
- University of PaduaIT461 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR449 papers
- Astrophysique, Instrumentation et ModélisationFR424 papers
- Center for Astrophysics Harvard & SmithsonianUS420 papers
- Netherlands Institute for Radio AstronomyNL418 papers
- Osservatorio Astronomico di PadovaIT411 papers
- Osservatorio astronomico di BolognaIT398 papers
- California Institute of TechnologyUS397 papers
16 papers · 1 filter
BeppoSAX observations of low power radio galaxies: possible detection of obscured nuclei
E. Trussoni, F. Vagnetti, S. Massaglia +6
We present the first results of BeppoSAX observations of a small sample of low brightness FRI radio galaxies. The flux of all the targets is consistent with a thermal spectrum, as…
K-band imaging of 52 B3-VLA quasars: Nucleus and host properties
R. Carballo, S. F. Sanchez, J. I. Gonzalez-Serrano +2
We present K-band imaging and photometry of a sample of 52 radio loud quasars (RQs) selected from the B3 survey with flux densities above 0.5 Jy at 408 MHz. The optical completenes…
A study of the core of the Shapley Concentration: III. Properties of the clusters in the A3558 complex
S. Bardelli, E. Zucca, G. Zamorani +2
The Shapley Concentration is the richest supercluster of clusters in the nearby universe and its core is a remarkable complex formed by the ACO clusters A3558, A3562 and A3556, and…
Large bent jets in the inner region of CSSs
F. Mantovani, W. Junor, M. Bondi +5
The class of Compact Steep-spectrum Sources is dominated by double-lobed objects (70%). The remaining 30% are jet-dominated objects, with the jet brightened either by Doppler boost…
The Lensing Cluster MS0440+0204 Seen by HST, ROSAT and ASCA: I. Cluster Properties
I. M. Gioia, E. J. Shaya, O. Le Fevre +3
We present an analysis of the properties of the lensing cluster MS0440+0204 at z=0.1965. MS0440+0204 has been observed with a variety of telescopes at diverse wavelengths: from the…
X-ray Clusters at High Redshift
I. M. Gioia
As the largest gravitationally bound structures known, clusters provide clear constraints on the formation of structure and on the composition of the universe. Despite their extrem…
A Radio Study of the Seyfert Galaxy IC 5063: Evidence for Fast Gas Outflow
R. Morganti, T. Oosterloo, Z. Tsvetanov
New radio continuum (8 GHz and 1.4 GHz) and HI 21 cm line observations of the Seyfert 2 galaxy IC 5063 (PKS 2048-572) were obtained with the Australia Telescope Compact Array (ATCA…
Red quasars not so dusty
C. R. Benn, M. Vigotti, R. Carballo +2
Webster et al (1995) claimed that up to 80% of QSOs may be obscured by dust. They inferred the presence of this dust from the remarkably broad range of B-K optical-infrared colours…
Diffuse radio emission in the Coma cluster
L. Feretti, G. Giovannini
The Coma cluster is peculiar in the radio domain owing to the presence of cluster-wide diffuse sources: the radio halo Coma C, the relic source 1253+275, and the bridge between the…
VLBI Observations of a Complete Sample of Radio Galaxies: VIII - Proper Motion in 3C338
G. Giovannini, W. D. Cotton, L. Feretti +2
We present new VLA, MERLIN and VLBI images for the radio galaxy 3C 338, and the results of the monitoring of its arcsecond core flux density. Present high sensitivity observations…
Deceleration in the Expansion of SN1993J
J. M. Marcaide, A. Alberdi, E. Ros +13
A rarity among supernova, SN 1993J in M81 can be studied with high spatial resolution. Its radio power and distance permit VLBI observations to monitor the expansion of its angular…
A Very Hot, High Redshift Cluster of Galaxies: More Trouble for Omega_0 = 1
Megan Donahue, G. Mark Voit, Isabella M. Gioia +3
We have observed the most distant (z=0.829) cluster of galaxies in the Einstein Extended Medium Sensitivity Survey, with the ASCA and ROSAT satellites. We find an X-ray temperature…
Adiabatic Invariants and Scalar Fields in a de Sitter Space-Time
C. Bertoni, F. Finelli, G. Venturi
The method of adiabatic invariants for time dependent Hamiltonians is applied to a massive scalar field in a de Sitter space-time. The scalar field ground state, its Fock space and…
Inverse Compton X-rays from strong FRII radio-galaxies
G. Brunetti, G. Setti, A. Comastri
In the framework of the quasar-radio galaxies unification the radio emitting lobes of FRII radio galaxies are pervaded by an intense quasar radiation field.Inverse Compton (IC) sca…
Discovery of the Young, Energetic Radio Pulsar PSR J1105-6107
V. M. Kaspi, M. Bailes, R. N. Manchester +4
We report the discovery and follow-up timing observations of the 63 ms radio pulsar, PSR J1105-6107. The pulsar is young, having a characteristic age of only 63 kyr and, from its d…
FAUST observations of UV sources toward the Virgo cluster
N. Brosch, L. Formiggini, E. Almoznino +3
We analyze three UV images covering a 100 square degree field toward the Virgo cluster,obtained by the FAUST space experiment. We detect 191 sources to a signal-to-noise ratio of 4…