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Authors whose works are in public domain in at least one jurisdiction

List of works by Giuseppe Perola

51-100 of 149 results

Simultaneous EXOSAT and IUE observations of Fairall 9 : short and long term variability

The recent X-ray history of NGC 5506

scientific article published in January 2003

A model for the X-ray absorption in Compton-thin AGN

scholarly article

An exceptional change in the X-ray flux and spectrum of the Seyfert 1 galaxy E 1615+061

scientific article published in 1988

X-ray observations of NGC 7582 and the Grus Quartet with the Einstein Observatory

scientific article published in January 1981

NHXM: a New Hard X-ray imaging and polarimetric Mission

The ultraviolet spectrum of NGC 4151 from 1978 to 1990: general characteristics and evolution

scientific article published in January 1991

Tailed radio sources as probes of the intergalactic medium pressure

scientific article published in January 1992

Rapid NH changes in NGC 4151

X-ray obscuration and obscured AGN in the local universe

scientific article published in January 2005

IUE spectra of the jet and the nucleus of M 87

scholarly article

A detailed study of the C IV lambda 1550 line profile and adjacent spectral features in NGC 4151 from 1978 to 1983

scholarly article

Detailed ultraviolet observations of the quasar 3C 273 with the IUE

scientific article published in 1980

The New Hard X-ray Mission

Time-resolved spectral analysis of three Seyfert galaxies observed with Ginga

scientific article published in January 1992

Rapid variability of the near IR emission of OJ 287

scientific article published in January 1987

Infrared and X-ray observations of the decline of A 0620-00

scientific article published in January 1976

Short time scale variability of the BL Lacertae object OJ 287 in the near-infrared

scholarly article

X-ray reprocessing in Seyfert galaxies: Simultaneous XMM-Newton/BeppoSAX observations

scientific article published in January 2004

Near-infrared spectral variability in three bright BL Lacertae objects

scientific article published in 1990

Investigating the near infrared spectral slope-intensity correlation in six radio selected BL Lacertae objects

scientific article published in January 1995

Small-amplitude coherent signals in the X-ray emission of NGC 4151

scientific article published in the Astrophysical Journal

A self-consistent test of comptonisation models using BeppoSAX observations of Seyfert galaxies

scientific article published in January 2001

Iron K-alpha line from X-ray illuminated relativistic disks

scientific article published in 1992

The iron line and high energy bump as X-ray signatures of cold matter in Seyfert 1 galaxies

scientific article published in 1991

Near infrared variability of bright BL Lac objects

scientific article published in January 1987

A possible bias on the estimate of L_bol_/L_edd_ in AGN as a function of luminosity and redshift

scientific article published in January 2006

A Westerbork survey of rich clusters of galaxies. II. The luminosity function of bright cluster galaxies at 1415 MHz

scientific article published in January 1976

X-ray reprocessing and UV continuum in AGN : the case of NGC 4151

scientific article

Chandra and XMM–Newton observations of Tololo 0109-383

scientific article published in Astronomy and Astrophysics

Results from the NGC 4151 ultraviolet laboratory

scientific article published in January 1982

Observations of the head-rail radio galaxy NGC 3862 (3C 264) at 0.6, 1.4, and 5.0 GHz

scientific article published in January 1981

One more surprise from the Circinus Galaxy: BeppoSAX discovery of a transmission component in hard X-rays

scientific article published in January 1999

The ultraviolet spectra of normal elliptical galaxies : a population synthesis approach

scientific article published in 1985

The ultraviolet to X-ray spectrum of the Seyfert 1 galaxy E 1615+061: accretion disk and reflection models

scientific article published in January 1997

Broad band spectral study of the BeppoSAX observation of NGC 3783

scientific article published in January 2001

An x-ray polarimeter for hard x-ray optics

A cooling flow in a high-redshift, X-ray-selected cluster of galaxies

scientific article published in the Astrophysical Journal

The broad band spectrum and variability of NGC 4151 observed by BeppoSAX

scientific article published in Astronomy and Astrophysics

Modelling the soft X-ray excess in E 1615+061

scholarly article

X-ray spectral changes in rapidly variable Seyfert galaxies

POLARIX: a small mission of x-ray polarimetry

The non-equilibrium photoionized absorber in NGC 4051

scientific article published in January 1997

Radio observations of II Zw 40

scholarly article

Spectral variability of six bright BL Lac objects in the near IR

scientific article published in January 1994

Non-thermal models of the X-ray emission in Seyfert galaxies : the case of NGC 4151

scholarly article

HEXIT-SAT: a mission concept for x-ray grazing incidence telescopes from 0.5 to 70 keV

X-ray absorption in Compton-thin AGN: the predictions of a model revisited

scientific article published in January 2008

Discovery of a Redshifted Iron K-Line in the X-Ray Afterglow of GRB 000214

A ROSAT HRI observation of the cooling flow cluster MS0839.9+2938

scientific article published in January 1995