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
41 papers · 2 filters
The HST survey of the B2 sample of radio-galaxies: optical nuclei and the FRI/BL Lac unified scheme
A. Capetti, A. Celotti, M. Chiaberge +4
We examine the optical properties of the nuclei of low luminosity radio-galaxies using snapshot HST images of the B2 sample. In agreement with the results obtained from the analysi…
Optical identifications of High Frequency Peakers
D. Dallacasa, R. Falomo, C. Stanghellini
We present CCD observations of 13 objects from a complete sample of 55 bright High Frequency Peaker (HFP) radio sources, and provide optical identification for 12 of them. Images i…
A new, kinematically anomalous HI component in the spiral galaxy NGC 2403
Filippo Fraternali, Tom Oosterloo, Renzo Sancisi +1
We discuss new, high sensitivity HI observations of the spiral galaxy NGC2403 which show extended emission at anomalous velocities with respect to the `cold' disk. This `anomalous'…
On the cosmological evolution of BL Lacs
A. Caccianiga, T. Maccacaro, A. Wolter +2
We study the cosmological evolution of BL Lac objects by applying the Ve/Va analysis to a new sample of 55 objects presented for the first time in this paper. This sample has been…
Radio-optically selected clusters of galaxies. II. The cluster sample
A. Zanichelli, R. Scaramella, G. Vettolani +3
We present a sample of 171 candidate groups and clusters of galaxies at intermediate redshift over an area of ~550 square degrees at the South Galactic Pole selected by using optic…
Radio-optically selected clusters of galaxies. I. The radiogalaxy sample
A. Zanichelli, M. Vigotti, R. Scaramella +2
In order to study the status and the possible evolution of clusters of galaxies at intermediate redshifts (z ~ 0.1 - 0.3), as well as their spatial correlation and relationship wit…
Multifrequency Study of The Radio Galaxy NGC326
M. Murgia, P. Parma, H. R. de Ruiter +4
We present the results of a multi-frequency study of the inversion symmetric radio galaxy NGC326 based on Very Large Array observations at 1.4, 1.6, 4.8, 8.5 and 14.9 GHz. The morp…
Radio galaxies and magnetic fields in A514
F. Govoni, G. B. Taylor, D. Dallacasa +2
A514 contains six extended and polarized radio sources located at various projected distances from the cluster center. Here we present a detailed study of these six radio sources i…
The Fundamental Plane of Radio Galaxies
D. Bettoni, R. Falomo, G. Fasano +3
We collected photometrical and dynamical data for 73 low red-shift (z<0.2) Radio Galaxies (LzRG) in order to study their Fundamental Plane (FP). For 22 sources we also present new…
High-redshift QSOs in the FIRST survey
C. R. Benn, M. Vigotti, M. Pedani +4
In a pilot search for high-redshift radio QSOs, we have obtained spectra of 55 FIRST sources (S(1.4GHz) > 1 mJy) with very red (O-E > 3) starlike optical identifications. 10 of the…
A new sample of large angular size radio galaxies. II. The optical data
L. Lara, I. Marquez, W. D. Cotton +4
We constructed and presented in the first paper of this series a new sample of 84 large angular size radio galaxies by selecting from the NRAO VLA Sky Survey objects with angular s…
The Nature of the Faint Radio Population
I. Prandoni, L. Gregorini, P. Parma +4
We present the results obtained so far from the optical follow-up of the ATESP sub-mJy radio survey. The ATESP results are then compared with the ones obtained from other deep radi…
A Systematic Study of X-Ray Substructure of Galaxy Clusters Detected in the ROSAT All-Sky Survey
P. Schuecker, H. Boehringer, T. H. Reiprich +1
Results of a systematic study of substructure in X-ray surface brightness distributions of a combined sample of 470 REFLEX+BCS clusters of galaxies are presented. The fully automiz…
Correlation of the magnetic field and the intra-cluster gas density in galaxy clusters
K. Dolag, S. Schindler, F. Govoni +1
We present a correlation between X-ray surface brightness and Faraday rotation measure in galaxy clusters, both, from radio and X-ray observations as well as from modeling of the i…
EVN observations of low-luminosity flat-spectrum AGNs
A. Caccianiga, M. J. M. Marcha, A. Thean +1
We present and discuss the results of VLBI (EVN) observations of three low-luminosity (P(5 GHz)<10^25 W/Hz) Broad Emission Line AGNs carefully selected from a sample of flat spectr…
An eclipsing millisecond pulsar with a possible main-sequence companion in NGC 6397
N. D'Amico, A. Possenti, R. N. Manchester +3
We present the results of one year of pulse timing observations of PSR J1740-5340, an eclipsing millisecond pulsar located in the globular cluster NGC 6397. We have obtained detail…
Clumpy outer Galaxy molecular clouds and the steepening of the IMF
J. Brand, J. G. A. Wouterloot, A. L. Rudolph +1
We report the results of high-resolution (~0.2 pc) CO(1-0) and CS(2-1) observations of the central regions of three star-forming molecular clouds in the far-outer Galaxy (~16 kpc f…
Absolute kinematics of radio source components in the complete S5 polar cap sample I. First and second epoch maps at 8.4 GHz
E. Ros, J. M. Marcaide, J. C. Guirado +1
We observed the thirteen extragalactic radio sources of the S5 polar cap sample at 8.4 GHz with the Very Long Baseline Array, on 1997.93 and 1999.41. We present the maps from those…
Radio and X-ray diffuse emission in six clusters of galaxies
F. Govoni, L. Feretti, G. Giovannini +3
Deep Very Large Array radio observations confirm the presence of halo and relic sources in six clusters of galaxies (A115, A520, A773, A1664, A2254, A2744) where a wide diffuse emi…
Internal and external shock fronts in He2-104
M. Contini, L. Formiggini
The spectra of both the inner and outer nebulae in He2-104 are modelled by composite models which accounts consistently for photoionisation and shocks. The temperature of the hot s…
Two-sided radio emission in ON231 (W Comae)
E. Massaro, F. Mantovani, R. Fanti +3
Recent radio images of the BL Lac object ON231 (W Com, 1219+285) show remarkable new features in the source structure compared to those previously published. The images were obtain…
VLBA Polarimetry of Three Powerful Radio Galaxy Cores
G. B. Taylor, D. H. Hough, T. Venturi
We present sensitive, high dynamic range, Very Long Baseline Array (VLBA) polarimetric observations of the cores of three powerful radio galaxies: 3C166, 3C236 and 3C390.3. Signifi…
A study of the H2O maser emission from R Cas
J. Brand, L. Baldacci, D. Engels
We describe the monitoring program we have been carrying out during the past 10 years on a sample of late-type stars, with the Medicina 32-m and Effelsberg 100-m antennas. We discu…
Hard X-ray emission from the galaxy cluster A3667
R. Fusco-Femiano, D. Dal Fiume, M. Orlandini +3
We report the results of a long BeppoSAX observation of Abell 3667, one of the most spectacular galaxy cluster in the southern sky. A clear detection of hard X-ray radiation up to…