X-ray view of a massive node of the Cosmic Web at z ∼ 3 - I. An exceptional overdensity of rapidly accreting supermassive black holes

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Volume 694 (February 2025)

A&A, 694 (2025) A165

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Table 3.

Properties of the X-ray source candidates and the results from the best spectral-fit models.

(1)	(2)		(3)		(4)	(5)	(6)	(7)
Name	RA	Dec	Redshifts		Cnts	$N_{H}^{pl}$ ${N}_{\mathrm{H}}^{\mathrm{pl}}$	Γ_ph	$log (\frac{L_{2 - 10 keV}}{{erg s}^{- 1}})$ $\log(\frac{{L}_{2{-}10\,\mathrm{keV}}}{\mathrm{erg\,s}^{-1}})$
	[deg]	[deg]	MUSE	ALMA	(0.5–10 keV)	10²² [cm⁻²]

ID1 (QSO)	10.3809	–49.6032	3.23647	3.2502	2778	< 1.65	$2 . 23_{- 0.06}^{+ 0.06}$ $2.23_{-0.06}^{+0.06}$	$45 . 79_{- 0.02}^{+ 0.02}$ $45.79_{-0.02}^{+0.02}$
ID2 (L02)	10.3816	–49.6161	3.24541	3.25081	453	$28 . 2_{- 16.5}^{+ 20.0}$ $28.2_{-16.5}^{+20.0}$	$1 . 9_{- 0.4}^{+ 0.4}$ $1.9_{-0.4}^{+0.4}$	$45 . 08_{- 0.22}^{+ 0.27}$ $45.08_{-0.22}^{+0.27}$
ID3 (L04)	10.3833	–49.6052	3.24302	3.2456	29	$131_{- 52}^{+ 64}$ $131_{-52}^{+64}$	1.8	$44 . 26_{- 0.19}^{+ 0.18}$ $44.26_{-0.19}^{+0.18}$
ID4	10.384	–49.6057	3.24313	–	19	< 25	1.8	$43 . 69_{- 0.17}^{+ 0.19}$ $43.69_{-0.17}^{+0.19}$
ID5	10.3957	–49.6116	3.24105	–	47	< 33	1.8	$43 . 93_{- 0.19}^{+ 0.19}$ $43.93_{-0.19}^{+0.19}$
ID6 (L01)	10.3966	–49.6199	3.24587	3.2451	17	< 32	1.8	$43 . 52_{- 0.24}^{+ 0.20}$ $43.52_{-0.24}^{+0.20}$

Notes. (1) Identification of X-ray point sources associated with spectroscopically confirmed proto-cluster members, with the name of the CO line-emitting galaxy identified in Pensabene et al. (2024) given in brackets; (2) Coordinates of the X-ray sources; (3) Redshifts determined with MUSE and/or ALMA data analyses; (4) Number of net counts; (5) Density from the best fit; (6) Photon Index of the best-fit power law; and (7) Luminosity in the 2–10 keV energy band.

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