4.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- S. Mereghetti3 profiles198 · h 61
- A. Tiengo3 profiles128 · h 45
- P. Esposito3 profiles123 · h 34
- G. Israel2 profiles102 · h 50
- L. Sidoli91 · h 28
- R. Mignani3 profiles70 · h 40
- N. Rea2 profiles69 · h 49
- A. De Luca65 · h 28
- R. Turolla2 profiles56 · h 52
- L. Stella3 profiles53 · h 60
- P. Caraveo2 profiles45 · h 93
- S. Zane42 · h 50
- National Institute for AstrophysicsIT625 papers
- Centre National de la Recherche ScientifiqueFR426 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR343 papers
- Astronomical Observatory of RomeIT322 papers
- University of PaduaIT318 papers
- Brera Astronomical ObservatoryIT298 papers
- Goddard Space Flight CenterUS290 papers
- Astrophysique, Instrumentation et ModélisationFR285 papers
- Max Planck Institute for Extraterrestrial PhysicsDE278 papers
- Institute of Space SciencesES260 papers
- Istituto di Radioastronomia di BolognaIT250 papers
- Agenzia Spaziale ItalianaIT248 papers
17 papers · 2 filters
The 0.1-200 keV spectrum of the blazar PKS 2005-489 during an active state
G. Tagliaferri, G. Ghisellini, P. Giommi +8
The bright BL Lac object PKS 2005-489 was observed by BeppoSAX on November 1-2, 1998, following an active X-ray state detected by RossiXTE. The source, detected between 0.1 and 200…
Spin and magnetism in old neutron stars
Monica Colpi, Andrea Possenti, S. B. Popov +1
The thermal, spin and magnetic evolution of neutron stars in the old low mass binaries is first explored. Recycled to very short periods via accretion torques, the neutron stars lo…
Metallicity Gradients in X-ray Clusters of Galaxies
Sabrina De Grandi, Silvano Molendi
We present the projected metallicity profiles for a sample of 17 rich galaxy clusters observed by BeppoSAX. We find that the 8 non-cooling flow clusters have flat metallicity profi…
The X-ray sources at the center of the supernova remnant RXJ0852.0-4622
Sandro Mereghetti
We present a BeppoSAX observation of the X-ray source AX J0851.9-4617.4 that has been proposed as the neutron star associated to the shell like-supernova remnant RX J0852.0-4622. T…
XMM-Newton observations of M87 and Its X-Ray Halo
H. Boehringer, E. Belsole, J. Kennea +10
We report performance verification observations of the giant elliptical galaxy M87 in the Virgo Cluster with the MOS, pn, and optical monitor instruments on board of XMM-Newton. Wi…
The Extended X-ray Halo of the Crab-like SNR G21.5-0.9
R. S. Warwick, J-P. Bernard, F. Bocchino +12
Recent XMM-Newton observations reveal an extended (150") low-surface brightness X-ray halo in the supernova remnant G21.5-0.9. The near circular symmetry, the lack of any limb brig…
XMM-Newton observation of an unusual iron line in the quasar Markarian 205
J. N. Reeves, M. J. L Turner, K. A. Pounds +6
XMM-Newton observations of the low luminosity, radio-quiet quasar Markarian 205 have revealed a unique iron K emission line profile. In marked contrast to the broad and redshifted…
Broad band spectrum of Cygnus X-1 in two spectral states with BeppoSAX
F. Frontera, E. Palazzi, A. A. Zdziarski +13
We report on the 0.5--200 keV spectral properties of Cyg X-1 observed at different epochs with the Narrow Field Instruments of the BeppoSAX satellite. The source was in its soft st…
Complex Spectral Variability from Intensive Multi-wavelength Monitoring of Mrk421 in 1998
T. Takahashi, J. Kataoka, G. Madejski +20
We conducted a multi-frequency campaign for the TeV blazar Mrk~421 in 1998 April. The campaign started from a pronounced high amplitude flare recorded by SAX and Whipple; ASCA obse…
The ROSAT-ESO Flux Limited X-ray (REFLEX) Galaxy Cluster Survey II: The Spatial Correlation Function
C. A. Collins, L. Guzzo, H. Boehringer +9
We report the results of the spatial two-point correlation function xi(r) for the new X-ray galaxy cluster survey REFLEX, which comprises of 452 X-ray selected clusters (449 with r…
Interpreting the optical data of the Hubble Deep Field South: colors, morphological number counts and photometric redshifts
M. Volonteri, P. Saracco, G. Chincarini +1
We present an analysis of the optical data of the Hubble Deep Field South. We derive F300W(AB), F450W(AB), F606W(AB) and F814W(AB) number counts for galaxies in all four bands. The…
A Search for the Optical/Infrared Counterpart of the Anomalous X-ray Pulsar 1E 1841-045
S. Mereghetti, R. P. Mignani, S. Covino +5
We have carried out a search for the optical and infrared counterpart of the Anomalous X-ray Pulsar 1E 1841-045, which is located at the center of the supernova remnant Kes73. We p…
The discovery of quiescent X-ray emission from SAX J1808.4-3658, the transient 2.5ms pulsar
L. Stella, S. Campana, S. Mereghetti +2
We report on a 20 ks BeppoSAX observation of the transient 2.5 ms X-ray pulsar SAX J1808.4-3658 in its quiescent state. A source at a level of ~ 3 x 10^-3 c/s was detected with the…
HST revisits the proper motion of PSR B0656+14
R. P. Mignani, A. DeLuca, P. A. Caraveo
We report the first successful measurement (with HST/WFPC2) of a significant proper motion for a V~ 25 object which we had proposed as the optical counterpart of the radio pulsar P…
Hard X-ray emission from the galaxy cluster A2256
R. Fusco-Femiano, D. Dal Fiume, S. De Grandi +6
After the positive detection by BeppoSAX of hard X-ray radiation up to ~80 keV in the Coma cluster spectrum, we present evidence for nonthermal emission from A2256 in excess of the…
Interaction in Abell 2256: the BeppoSAX view
Silvano Molendi, Sabrina De Grandi, Roberto Fusco-Femiano
We present results from a spatially resolved spectral analysis of the merging cluster Abell 2256. The long integration time (135 ks) and the good spatial resolution of the MECS onb…
The discovery of the optical/IR counterpart of the 12s transient X-ray pulsar GS 0834-43
G. L. Israel, S. Covino, S. Campana +9
We report the discovery of the optical/infra-red counterpart of the 12.3s transient X-ray pulsar GS0834-43. We re-analysed archival ROSAT PSPC observations of GS0834-43, obtaining…