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20 April 2024 |
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Article overview
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The INTEGRAL/IBIS AGN catalogue: an update | | A. Malizia
; R. Landi
; M. Molina
; L. Bassani
; A. Bazzano
; A. J. Bird
; P. Ubertini
; | | Date: |
21 Apr 2016 | | Abstract: | 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 which are reported here for the first time. We have
used X-ray data to image the IBIS 90\% error circle of all the AGN in the
sample of 107, in order to obtain the correct X-ray counterparts, locate them
with arcsec accuracy and therefore pinpoint the correct optical counterparts.
This procedure has led to the optical and spectral characterization of the
entire sample. This new set consists of 34 broad line or type 1 AGN, 47 narrow
line or type 2 AGN, 18 Blazars and 8 sources of unknown class. These 8 sources
have been associated with AGN from their positional coincidence with
2MASX/Radio/X-ray sources. Seven high energy emitters have been included since
they are considered to be good AGN candidates. Spectral analysis has been
already performed on 55 objects and the results from the most recent and/or
best statistical measurements have been collected. For the remaining 52
sources, we report the spectral analysis for the first time in this work. We
have been able to obtain the full X-ray coverage of the sample making use of
data from Swift/XRT, XMM-Newton and NuSTAR. In addition to the spectral
characterization of the entire sample, this analysis has enabled us to identify
peculiar sources and by comparing different datasets, highlight flux
variability in the 2-10 keV and 20-40 keV bands. | | Source: | arXiv, 1604.6303 | | Services: | Forum | Review | PDF | Favorites | |
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