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Multiwavelength variability study and search for periodicity of PKS 1510-089
G. Castignani, E. Pian, T. M. Belloni +14
Blazars are the most luminous and variable AGNs, and thus excellent probes of accretion and emission processes close to the central engine. We focus on PKS 1510-089 (), one…
Looking for blazars in a sample of unidentified high-energy emitting Fermi sources
E. J. Marchesini, N. Masetti, V. Chavushyan +12
Context. Based on their overwhelming dominance among associated Fermi gamma ray catalogue sources, it is expected that a large fraction of the unidentified Fermi objects are blazar…
The XMM Newton and INTEGRAL observations of the supergiant fast X-ray transient IGR J16328-4726
M. Fiocchi, A. Bazzano, L. Natalucci +6
The accretion mechanism producing the short flares observed from the Supergiant Fast X-ray Transients (SFXT) is still highly debated and forms a major part in our attempts to place…
The column density distribution of hard X-ray radio galaxies
F. Panessa, L. Bassani, R. Landi +6
In order to investigate the role of absorption in AGN with jets, we have studied the column density distribution of a hard X-ray selected sample of radio galaxies, derived from the…
Soft Gamma-ray selected radio galaxies: favouring giant size discovery
L. Bassani, T. Venturi, M. Molina +5
Using the recent INTEGRAL/IBIS and Swift/BAT surveys we have extracted a sample of 64 confirmed plus 3 candidate radio galaxies selected in the soft gamma-ray band. The sample cove…
The INTEGRAL/IBIS AGN catalogue: an update
A. Malizia, R. Landi, M. Molina +4
In the most recent IBIS survey based on observations performed during the first 1000 orbits of INTEGRAL, are listed 363 high energy emitters firmly associated with AGN, 107 of whic…
INTEGRAL upper limits on gamma-ray emission associated with the gravitational wave event GW150914
V. Savchenko, C. Ferrigno, S. Mereghetti +14
Using observations of the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL), we put upper limits on the gamma-ray and hard X-ray prompt emission associated with the gravit…
The IBIS soft gamma-ray sky after 1000 INTEGRAL orbits
A. J. Bird, A. Bazzano, A. Malizia +6
We report here an all-sky soft gamma-ray source catalog based on IBIS observations performed during the first 1000 orbits of INTEGRAL. The database for the construction of the sour…