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 4.

Physical properties of the MQN01, SSA22, and Spiderweb protoclusters and their AGN populations.

(1)	(2)	(3)	(4)	(5)	(6)	(7)
Name	t_exp	z_prot	$N_{AGN ; 4000}^{spec - z}$ $N_{\mathrm{AGN;4000}}^{\mathrm{spec-z}}$	$Δ v_{AGN}^{spec - z}$ $\Delta v_{\mathrm{AGN}}^{\mathrm{spec-z}}$	$A_{AGN ; 4000}^{spec - z}$ $A_{\mathrm{AGN;4000}}^{\mathrm{spec-z}}$	N_AGN^V_MQN01
	ks		( $N_{AGN}^{phot - z}$ $N_{\mathrm{AGN}}^{\mathrm{phot-z}}$ )	[km s⁻¹]	[cMpc²]

MQN01	634	3.247	6 (0)	689	4.2	6
SSA22	400	3.092	6 (2)	1610	463	2
Spiderweb	700	2.156	13 (1)	1830	77	7

Notes. (1) Name; (2) Chandra Exposure Time; (3) Redshift of the Protocluster; (4) Number of spectroscopically selected X-ray AGN ( $N_{AGN ; 4000}^{spec - z}$ $N_{\mathrm{AGN;4000}}^{\mathrm{spec-z}}$ ) within ±4000 km s⁻¹ of the protocluster redshift, along with the number of photometrically selected AGN ( $N_{AGN}^{phot - z}$ $N_{\mathrm{AGN}}^{\mathrm{phot-z}}$ ) shown in brackets; (5,6) Minimum velocity range ( $Δ v_{AGN}^{spec - z}$ $\Delta v_{\mathrm{AGN}}^{\mathrm{spec-z}}$ ) and circular area ( $A_{AGN ; 4000}^{spec - z}$ $A_{\mathrm{AGN;4000}}^{\mathrm{spec-z}}$ ) encompassing all spectroscopically selected AGN within the protocluster; (7) Maximum number of AGN within a area of ∼16 cMpc² and ±1000 km s⁻¹ from the protocluster redshift.

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