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24 April 2024 |
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Chandra Identification of Two AGN Discovered by INTEGRAL | | John A. Tomsick
; Roman Krivonos
; Farid Rahoui
; Marco Ajello
; Jerome Rodriguez
; Nicolas Barriere
; Arash Bodaghee
; Sylvain Chaty
; | | Date: |
17 Feb 2015 | | Abstract: | Here, we report on observations of two hard X-ray sources that were
originally discovered with the INTEGRAL satellite: IGR J04059+5416 and IGR
J08297-4250. We use the Chandra X-ray Observatory to localize the sources and
then archival near-IR images to identify the counterparts. Both sources have
counterparts in the catalog of extended 2 Micron All-Sky Survey sources, and
the counterpart to IGR J04059+5416 has been previously identified as a galaxy.
Thus, we place IGR J04059+5416 in the class of Active Galactic Nuclei (AGN),
and we suggest that IGR J08297-4250 is also an AGN. If this identification is
correct, the near-IR images suggest that the host galaxy of IGR J08297-4250 may
be merging with a smaller nearby galaxy. For IGR J04059+5416, the 0.3-86 keV
spectrum from Chandra and INTEGRAL is consistent with an absorbed power-law
with a column density of N_H = 3.1(+2.0)(-1.5)e22 cm-2 and a photon index of
Gamma = 1.4+/-0.7, and we suggest that it is a Seyfert galaxy. For IGR
J08297-4250, the photon index is similar, Gamma = 1.5+/-0.8, but the source is
highly absorbed (N_H = 6.1(+10.1)(-4.3)e23 cm-2). | | Source: | arXiv, 1502.5054 | | Services: | Forum | Review | PDF | Favorites | |
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