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Simbol-X: A Formation Flight Mission with an Unprecedented Imaging Capability in the 0.5-80 Kev Energy Band
Gianpiero Tagliaferri, Philippe Ferrando, Jean-Michel Le Duigou +8
The discovery of X-ray emission from cosmic sources in the 1960s has opened a new powerful observing window on the Universe. In fact, the exploration of the X-ray sky during the 70…
Polarization of the Crab pulsar and nebula as observed by the Integral/IBIS telescope
M. Forot, Philippe Laurent, I A. Grenier +2
Neutron stars generate powerful winds of relativistic particles that form bright synchrotron nebulae around them. Polarimetry provides a unique insight into the geometry and magnet…
An intense state of hard X-ray emission of Cyg X-1 observed by INTEGRAL coincident with TeV measurements
J. Malzac, P. Lubinski, A. A. Zdziarski +3
We present INTEGRAL light curves and spectra of the black-hole binary Cyg X-1 during a bright event that occurred in 2006 September, and which was simultaneous with a detection at…
Simbol-X background simulation activities
R. Chipaux, U. Briel, A. Bulgarelli +6
Using the Geant4 toolkit, a Monte-Carlo code to simulate the detector background of the Simbol-X focal plane instrument has been developed with the aim to optimize the design of th…
Science with Simbol-X
F. Fiore, M. Arnaud, U. Briel +20
Simbol-X is a French-Italian mission, with a participation of German laboratories, for X-ray astronomy in the wide 0.5-80 keV band. Taking advantage of emerging technology in mirro…
Compton telescope with coded aperture mask: Imaging with the INTEGRAL/IBIS Compton mode
M. Forot, P. Laurent, F. Lebrun +1
Compton telescopes provide a good sensitivity over a wide field of view in the difficult energy range running from a few hundred keV to several MeV. Their angular resolution is, ho…
Effects of Downscattering on the Continuum and Line Spectra in Powerful Wind Environment. Monte Carlo Simulations, Analytical Results and Data Analysis
Philippe Laurent, Lev Titarchuk
In Paper by Titarchuk & Shrader the general formulation and results for photon reprocessing (downscattering) that included recoil and Comptonization effects due to divergence of th…
INTEGRAL/IBIS Extragalactic survey: 20-100 keV selected AGN
L. Bassani, M. Molina, A. Malizia +10
Analysis of INTEGRAL Core Program and public Open Time observations performed up to April 2005 provides a sample of 62 active galactic nuclei in the 20-100 keV band above a flux li…
SIMBOL-X, a formation flying-mission for hard X-ray astrophysics
P. Ferrando, A. Goldwurm, P. Laurent +13
SIMBOL-X is a hard X-ray mission, operating in the ~ 0.5-70 keV range, which is proposed by a consortium of European laboratories in response to the 2004 call for ideas of CNES for…
Integral observation of Cyg X-1 in an intermediate state
J. Malzac, P. O. Petrucci, E. Jourdain +11
We present preliminary results of an observation of Cygnus X-1 with INTEGRAL performed on June 7-11 2003. Both spectral and variability properties of the source indicate that Cygnu…
The sky behind our galaxy as seen by IBIS on INTEGRAL
L. Bassani, A. Malizia, J. B. Stephen +16
During the Core Programme, INTEGRAL has surveyed a large portion of the sky (around 9000 square degrees); although INTEGRAL is not optimized for extra-galactic studies its observat…
The INTEGRAL/IBIS Scientific Data Analysis
A. Goldwurm, P. David, L. Foschini +6
The gamma-ray astronomical observatory INTEGRAL, succesfully launched on 17th October 2002, carries two large gamma-ray telescopes. One of them is the coded-mask imaging gamma-ray…
IBIS preliminary results on Cygnus X-1 spectral and temporal characteristics
A. Bazzano, A. J. Bird, F. Capitanio +11
We report preliminary results of a broadband spectral and temporal study of the black-hole binary Cyg X-1 performed with the IBIS telescope. Cyg X-1 was the first pointed celestial…
INTEGRAL/SPI ground calibration
D. Attié, B. Cordier, M. Gros +30
Three calibration campaigns of the spectrometer SPI have been performed before launch in order to determine the instrument characteristics, such as the effective detection area, th…
In-flight calibrations of IBIS/PICsIT
G. Malaguti, A. Bazzano, A. J. Bird +6
PICsIT (Pixellated Imaging CaeSium Iodide Telescope) is the high energy detector of the IBIS telescope on-board the INTEGRAL satellite. It consists of 4096 independent detection un…
Timing and Spectral Properties of X-ray Emission from the Converging Flows onto Black hole: Monte-Carlo Simulations
Philippe Laurent, Lev Titarchuk
We demonstrate that a X-ray spectrum of a converging inflow (CI) onto a black hole is the sum of a thermal (disk) component and the convolution of some fraction of this component w…
Integral/IBIS Observations of persistent black hole spectral states during the Core Program
P. Laurent, P. Goldoni, A. Goldwurm +1
The Imager on Board the Integral Satellite (IBIS) is one of the two main telescopes of Integral, the ESA soft gamma-ray mission to be launched in 2002. The Integral Core Program wi…
INTEGRAL observations of Galaxy Clusters
P. Goldoni, A. Goldwurm, P. Laurent +3
Cluster of galaxies are the largest concentrations of visible mass in the Universe and therefore a fundamental topic of cosmology and astrophysics. Recent radio, EUV, and X-ray obs…
Observation of a Black-Hole X-ray Nova in Outburst with INTEGRAL
P. Goldoni, A. Goldwurm, P. Laurent +2
We simulate the observation of a bright Nova Musca-like X-ray nova during outburst with INTEGRAL, the next ESA gamma-ray space observatory. We will show how performances of the INT…
Hard X-Rays from the Galactic Nucleus: Present and Future Observations
A. Goldwurm, P. Goldoni, P. Laurent +2
In spite of increasing evidences of the presence of a massive Black Hole at the Galactic Center, its radio counterpart, Sgr A*, shows little activity at high energies, and recent m…
Long-Term Variability of the Hard X-ray Source GRS 1758-258: GRANAT/SIGMA Observations
S. I. Kuznetsov, M. R. Gilfanov, E. M. Churazov +13
The results of GRANAT/SIGMA hard X-ray observations of GRS 1758-258 in 1990-1998 are presented. The source lies at ~5\arcdeg from the Galactic Center and was within the SIGMA field…
The converging inflow spectrum is an intrinsic signature for a black hole: Monte-Carlo simulations of Comptonization on free-falling electrons
P. Laurent, L. Titarchuk
An accreting black hole is, by definition, characterized by the drain. Namely, the matter falls into a black hole much the same way as water disappears down a drain - matter goes i…
Two Distinct Modes In The Low (Hard) State Of Cyg X-1 And 1E1740-294
S. Kuznetsov, M. Gilfanov, E. Churazov +12
The entire dataset of the GRANAT/SIGMA observations of Cyg X-1 and 1E1740.7-294 in 1990-1994 was analyzed in order to search for correlations between primary observational characte…