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Results 1 to 20 of 72 for query "G.C.Perola". (0.00 sec.)

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The HELLAS2XMM survey. V. Near-Infrared observations of X-ray sources with extreme X/O ratios
M. Mignoli; L. Pozzetti; A. Comastri; M. Brusa; P. Ciliegi; F. Cocchia; F. Fiore; F. La Franca; R. Maiolino; G. Matt; S. Molendi; G.C. Perola; S. Puccetti; P. Severgnini; C. Vignali;
15 Dec 2003 / Astron.Astrophys. 418 (2004) 827-840

A Long Observation of NGC 5548 by BeppoSAX: the High Energy Cut-off, Intrinsic Spectral Variability and a Truly Warm Absorber
F. Nicastro; L. Piro; A. De Rosa; M. Feroci; P. Grandi; F. Fiore; M. Elvis; F. Haardt; J. Kaastra; A. Malizia; L. Maraschi; G. Matt; G. C. Perola; P. O. Petrucci;
12 Dec 1999

HEXIT-SAT: a mission concept for X-ray grazing incidence telescopes from 0.5 to 70 keV
F. Fiore; G.C. Perola; G. Pareschi; O. Citterio; A. Anselmi; A. Comastri;
30 Jul 2004

Rapid N_H Changes in NGC 4151
S. Puccetti; G. Risaliti; F. Fiore; M. Elvis; F. Nicastro; G. C. Perola; M. Capalbi;
19 Nov 2003

On the nature of X-ray absorption in Seyfert 2 galaxies
M.Guainazzi; F.Fiore; G.Matt; G.C.Perola;
8 Jun 2001 / Mon.Not.Roy.Astron.Soc. 327 (2001) 323

Testing Comptonization models using BeppoSAX observations of Seyfert 1 galaxies
P.O. Petrucci; F. Haardt; L. Maraschi; P. Grandi; J. Malzac; G. Matt; F. Nicastro; L. Piro; G.C. Perola; A. De Rosa;
13 Dec 2000

A Self-Consistent Test of Comptonisation Models Using Bepposax Observations of Seyfert Galaxies
P.O. Petrucci; F. Haardt; L. Maraschi; P. Grandi; G. Matt; F. Nicastro; L. Piro; G.C. Perola; A. De Rosa;
27 Jun 2000

BeppoSAX confirms extreme relativistic effects in the X-ray spectrum of MCG-6-30-15
M.Guainazzi; G.Matt; S.Molendi; A.Orr; F.Fiore; P.Grandi; A.Matteuzzi; T.Mineo; G.C.Perola; A.N.Parmar; L.Piro;
16 Nov 1998

The Equilibrium Photoionized Absorber in 3C351
F. Nicastro; F. Fiore; M. Elvis; G.C. Perola ( Harvard-Smithsonian Center for Astrophysics; Cambridge; MA; Osservatorio Astronomico di Roma; Roma; Dipartimento di Fisica Universita degli studi "Roma Tre"; Roma;
9 Sep 1998

10.

Ionized Absorbers in AGN: the Role of Collisional Ionization and Time-Evolving Photoionization
F. Nicastro; F. Fiore; G.C. Perola; M. Elvis;
27 Aug 1998

11.

Multiple BeppoSAX Observations of IC 4329A to Probe the Origin of the Compton Reflection Component in Seyfert 1 Galaxies
M. Cappi; G. Di Cocco; M. Dadina; G. Malaguti; M. Matsuoka; G. Matt; G.C. Perola; L. Piro;
26 Jul 2000

12.

X-ray absorption in Compton-thin AGN: the predictions of a model revisited
A. Lamastra; G. C. Perola; G. Matt;
12 May 2008

13.

The Hellas2XMM survey: III. Multiwavelength observations of hard X-ray selected sources in the PKS 0312-77 field
M. Brusa; A. Comastri; M. Mignoli; F. Fiore; P. Ciliegi; C. Vignali; P. Severgnini; F. Cocchia; F. La Franca; G. Matt; G.C. Perola; R. Maiolino; A. Baldi; S. Molendi;
21 Jul 2003 / Astron.Astrophys. 409 (2003) 65-78

14.

The European Large Area ISO Survey V: a BeppoSAX hard X-ray survey of the S1 region
D.M.Alexander; F.La Franca; F.Fiore; X.Barcons; P.Ciliegi; L.Danese; R.Della Ceca; A.Franceschini; C.Gruppioni; G.Matt; I.Matute; S.Oliver; F.Pompilio; A.Wolter; A.Efstathiou; P.Heraudeau; G.C.Perola; M.Perri; D.Rigopoulou; M.Rowan-Robinson; S.Serjeant;
30 Dec 2000

15.

The HELLAS2XMM survey: IV. Optical identifications and the evolution of the accretion luminosity in the Universe
F. Fiore; M. Brusa; F. Cocchia; A. Baldi; N. Carangelo; P. Ciliegi; A. Comastri; F. la Franca; R. Maiolino; G. Matt; S. Molendi; M. Mignoli; G.C. Perola; P. Severgnini; C. Vignali;
26 Jun 2003 / Astron.Astrophys. 409 (2003) 79-90

16.

The BeppoSAX HELLAS survey: on the nature of faint hard X-ray selected sources
F. Fiore; L.A. Antonelli; P. Ciliegi; A. Comastri; P. Giommi; F. La Franca; R. Maiolino; G. Matt; S. Molendi; G.C. Perola; C. Vignali;
10 Jul 2000

17.

Clearing up the clouds around NGC 4151: evidence of a highly ionized absorber
L. Piro; A. De Rosa; G. Matt; G.C. Perola;
29 Aug 2005

18.

Testing Comptonisation models using BeppoSAX observations of Seyfert 1 galaxies
P.O. Petrucci; F. Haardt; L. Maraschi; P. Grandi; J. Malzac; G. Matt; F. Nicastro; L. Piro; G.C. Perola; A. De Rosa;
11 Apr 2001

19.

A self-consistent test of Comptonization models using a long BeppoSAX observation of NGC 5548
P.O. Petrucci; F. Haardt; L. Maraschi; P. Grandi; G. Matt; F. Nicastro; L. Piro; G.C. Perola; A. De Rosa;
10 Apr 2000

20.

X-ray spectral components from a broad band BeppoSAX observation of the Seyfert galaxy IC 4329A
G.C. Perola et al;
4 Oct 1999

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