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Unveiling the nature of INTEGRAL objects through optical spectroscopy. VII. Identification of 20 Galactic and extragalactic hard X-ray sources
N. Masetti, P. Parisi, E. Palazzi +17
Within the framework of our program of assessment of the nature of unidentified or poorly known INTEGRAL sources, we present here spectroscopy of optical objects, selected through…
Hard X-ray observations of PSR J1833-1034 and its associated pulsar wind nebula
A. De Rosa, P. Ubertini, R. Campana +3
PSR J1833-1034 and its associated Pulsar Wind Nebula (PWN) has been investigated in depth through X-ray observations ranging from 0.1 to 200 keV. The low energy X-ray data from Cha…
INTEGRAL/IBIS and Swift/XRT observations of hard cataclysmic variables
R. Landi, L. Bassani, A. J. Dean +5
The analysis of the third INTEGRAL/IBIS survey has revealed several new cataclysmic variables, most of which turned out to be intermediate polars, thus confirming that these object…
The two INTEGRAL X-ray transients IGR J17091--3624 and IGR J17098--3628: a multi-wavelength long term campaign
F. Capitanio, M. Giroletti, M. Molina +7
IGR J17091-3624 and IGR J17098-3628 are two X-ray transients discovered by INTEGRAL and classified as possible black hole candidates (BHCs). We present here the results obtained fr…
A broad-band spectral analysis of eight radio loud type 1 AGN selected in the hard X-ray band
M. Molina, L. Bassani, A. Malizia +6
Starting from a complete sample of type I AGN observed by INTEGRAL in the 20-40 keV band, we have selected a set of 8 AGN which can be classified as radio loud objects according to…
X-ray observations of the Large Magellanic Cloud pulsar PSR B0540-69 and its PWN
R. Campana, T. Mineo, A. De Rosa +3
PSR B0540-69 is a young pulsar in the Large Magellanic Cloud that has similar properties with respect to the Crab Pulsar, and is embedded in a Pulsar Wind Nebula. We have analyzed…
The properties of the putative pulsar associated with IGR J18135-1751/HESS J1813-178
A. J. Dean, A. B. Hill
Context: We investigate the possible theoretical properties of the putative pulsar associated with the pulsar wind nebula IGR J18135-1751/HESS J1813-178 based upon recent gamma-ray…
Unveiling the nature of INTEGRAL objects through optical spectroscopy. VI. A multi-observatory identification campaign
N. Masetti, E. Mason, L. Morelli +18
Using 8 telescopes in the northern and southern hemispheres, plus archival data from two on-line sky surveys, we performed a systematic optical spectroscopic study of 39 putative c…
High-redshift blazar identification for Swift J1656.3-3302
N. Masetti, E. Mason, R. Landi +9
We report on the high-redshift blazar identification of a new gamma-ray source, Swift J1656.3-3302, detected with the BAT imager onboard the Swift satellite and the IBIS instrument…