output
19932026
most citedThe Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission

4.1k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 1999Show all

18 papers · 1 filter

astro-ph1999★ 1 cited

The AGILE Gamma-ray Astronomy Mission

S. Mereghetti, G. Barbiellini, G. Budini +18

We describe the AGILE gamma-ray astronomy satellite which has recently been selected as the first Small Scientific Mission of the Italian Space Agency. With a launch in 2002, AGILE…

astro-ph1999★ 24 cited

A BeppoSAX observation of the merging cluster Abell 3266

Sabrina De Grandi, Silvano Molendi

We present results from a BeppoSAX observation of the rich cluster Abell 3266. The broad band spectrum (2-50 keV) of the cluster, when fitted with an optically thin thermal emissio…

astro-ph1999

Discovery of a faint 437 s X-ray pulsar 1SAX J1452.8-5949

T. Oosterbroek, M. Orlandini, A. N. Parmar +6

A new pulsar, 1SAX J1452.8-5949, was discovered during a BeppoSAX galactic plane survey on 1999 July 20 at R.A.=14h 52m 49s, Dec=-59 49' 18'' (J2000) with a 90% confidence uncertai…

astro-ph1999★ 16 cited

Mapping the circumnuclear matter of NGC1068 in X-rays

M. Guainazzi, S. Molendi, P. Vignati +2

An-energy dependent variation of the X-ray emission from the archetypical "Compton-thick'' Seyfert 2 galaxy NGC1068 has been observed between two BeppoSAX observations, performed o…

astro-ph1999★ 34 cited

HI in four star-forming low-luminosity E/S0 and S0 galaxies

E. Sadler, T. Oosterloo, R. Morganti

We present HI data cubes of four low-luminosity early-type galaxies which are currently forming stars. These galaxies have absolute magnitudes in the range M_B=-17.9 to -19.9 (H_o=…

astro-ph1999★ 41 cited

The BeppoSAX view of the hot cluster Abell 2319

S. Molendi, S. De Grandi, R. Fusco-Femiano +4

We present results from a BeppoSAX observation of the rich cluster Abell 2319. The broad band spectrum (2-50 keV) of the cluster can be adequately represented by an optically thin…

astro-ph1999★ 6 cited

The BeppoSAX 1-8 keV cosmic background spectrum

A. Vecchi, S. Molendi, M. Guainazzi +2

The spectrum of the 1.0-8.0 keV cosmic X-ray background (CXB) at galactic latitudes > 25 degrees has been measured using the BeppoSAX LECS and MECS instruments. The spectrum is con…

astro-ph1999★ 101 cited

Rapid X-ray Variability of the BL Lacertae Object PKS 2155-304

Y. H. Zhang, A. Celotti, A. Treves +7

(Abridged) We present a detailed power density spectrum and cross-correlation analysis of the X-ray light curves of the BL Lac object PKS 2155-304, observed with BeppoSAX in 1997 a…

astro-ph1999

Photometric Redshifts in lensing clusters: Identification and Calibration of faint high-z galaxies

Roser Pello, Jean-Paul Kneib, Micol Bolzonella +1

We discuss a method aiming to use photometric redshifts in lensing clusters to access the population of distant background sources. The amplification provided by gravitational lens…

astro-ph1999★ 90 cited

Effects of cluster galaxies on arc statistics

Massimo Meneghetti, Micol Bolzonella, Matthias Bartelmann +2

We present the results of a set of numerical simulations evaluating the effect of cluster galaxies on arc statistics. We perform a first set of gravitational lensing simulations us…

astro-ph1999★ 60 cited

Further evidence that 1RXS J170849.0-400910 is an Anomalous X-ray pulsar

GianLuca Israel, Stefano Covino, Luigi Stella +2

We report the results of two ROSAT HRI observations of the recently discovered 11s X-ray pulsar 1RXS J170849.0-400910. A refined position with a smaller error radius (10" uncertain…

astro-ph1999★ 68 cited

Spectral Evolution of PKS 2155-304 observed with BeppoSAX during an Active Gamma-ray Phase

L. Chiappetti, L. Maraschi, F. Tavecchio +9

We present the results of BeppoSAX observations of PKS 2155-304 during an intense gamma-ray flare. The source was in a high X-ray state. A temporal analysis of the data reveals a t…

astro-ph1999

The AGILE gamma-ray detector

A. Morselli, A. Perrino, P. Picozza +6

The gamma-ray detector AGILE, operating in the energy range from 30 MeV to 50 GeV, is composed by a tracking part, a light calorimeter and an anticoincidence system. Here we descri…

astro-ph1999★ 150 cited

A Flux-limited Sample of Bright Clusters of Galaxies from the Southern Part of the ROSAT All-Sky Survey: the Catalog and the LogN-LogS

S. De Grandi, H. Böhringer, L. Guzzo +8

We describe the selection of an X-ray flux-limited sample of bright clusters of galaxies in the southern hemisphere, based on the first analysis of the ROSAT All-Sky Survey data (R…

astro-ph1999★ 14 cited

HI in Early-Type Galaxies

T. Oosterloo, R. Morganti, E. M. Sadler

We summarize the HI properties of early-type galaxies, in particular the differences in HI morphologies observed in early-type galaxies of different luminosities. We find that in l…

astro-ph1999★ 32 cited

The X-ray Luminosity Function of Bright Clusters in the Local Universe

S. De Grandi, L. Guzzo, H. Böhringer +8

We present the X-ray luminosity function (XLF) for clusters of galaxies derived from the RASS1 Bright Sample. The sample, selected from the ROSAT All-Sky Survey in a region of 2.5…

astro-ph1999★ 1 cited

BeppoSAX Observations of the galactic source GS1826-238 in a hard X-ray high state

Stefano Del Sordo, Filippo Frontera, Elena Pian +7

The BeppoSAX Narrow Field Instruments observed the galactic source GS1826-238 in October 1997, following a hard X-ray outburst with a peak flux of about 100 mCrab detected by BATSE…

astro-ph1999★ 260 cited

Hard X-Ray Radiation in the Coma Cluster Spectrum

R. Fusco-Femiano, D. Dal Fiume, L. Feretti +5

Hard X-ray radiation has been detected for the first time in the Coma cluster by BeppoSAX. Thanks to the unprecedented sensitivity of the Phoswich Detection System (PDS) instrument…