The warm-hot intergalactic medium in inter-cluster filaments - A forecast for HUBS observations based on eRASS1 superclusters

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Volume 695 (March 2025)

A&A, 695 (2025) A15

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Table 1.

Properties of connecting clusters for the candidate filaments.

Filament Name	Cluster Name	z	M₅₀₀	R₅₀₀	R_vir	kT
		(–)	(10¹⁴ M_⊙)	(Mpc)	(Mpc)	(keV)
J0935+1949	1eRASS J093552.6+201132	0.1757 ± 0.0004	$1 . 54_{- 0.38}^{+ 0.32}$ $1.54_{-0.38}^{+0.32}$	$0 . 77_{- 0.07}^{+ 0.05}$ $0.77_{-0.07}^{+0.05}$	$1 . 66_{- 0.15}^{+ 0.11}$ $1.66_{-0.15}^{+0.11}$	$1 . 66_{- 0.53}^{+ 2.24}$ $1.66_{-0.53}^{+2.24}$
	1eRASS J093446.5+192751	0.1807 ± 0.0004	$1 . 17_{- 0.44}^{+ 0.42}$ $1.17_{-0.44}^{+0.42}$	$0 . 7_{- 0.1}^{+ 0.08}$ $0.7_{-0.1}^{+0.08}$	$1 . 51_{- 0.22}^{+ 0.16}$ $1.51_{-0.22}^{+0.16}$	> 1.08

J0945+3418	1eRASS J094554.6+344046	0.1344 ± 0.0004	$1 . 41_{- 0.31}^{+ 0.32}$ $1.41_{-0.31}^{+0.32}$	$0 . 76_{- 0.06}^{+ 0.05}$ $0.76_{-0.06}^{+0.05}$	$1 . 63_{- 0.13}^{+ 0.12}$ $1.63_{-0.13}^{+0.12}$	> 1.52
	1eRASS J094426.2+335718	0.1306 ± 0.0004	$1 . 91_{- 0.34}^{+ 0.4}$ $1.91_{-0.34}^{+0.4}$	$0 . 84_{- 0.05}^{+ 0.05}$ $0.84_{-0.05}^{+0.05}$	$1 . 81_{- 0.12}^{+ 0.12}$ $1.81_{-0.12}^{+0.12}$	$1 . 51_{- 0.34}^{+ 1.49}$ $1.51_{-0.34}^{+1.49}$

J1214+2712	1eRASS J121411.6+263822	0.1733 ± 0.0038	$1 . 36_{- 0.29}^{+ 0.26}$ $1.36_{-0.29}^{+0.26}$	$0 . 74_{- 0.06}^{+ 0.04}$ $0.74_{-0.06}^{+0.04}$	$1 . 59_{- 0.12}^{+ 0.10}$ $1.59_{-0.12}^{+0.10}$	> 1.28
	1eRASS J121259.1+272708	0.1797 ± 0.0003	$3 . 36_{- 0.29}^{+ 0.44}$ $3.36_{-0.29}^{+0.44}$	$1 . 00_{- 0.03}^{+ 0.04}$ $1.00_{-0.03}^{+0.04}$	$2 . 15_{- 0.06}^{+ 0.09}$ $2.15_{-0.06}^{+0.09}$	$1 . 23_{- 0.16}^{+ 0.45}$ $1.23_{-0.16}^{+0.45}$

J2300−4534	1eRASS J230541.6−451201	0.1275 ± 0.0008	$4 . 15_{- 0.43}^{+ 0.32}$ $4.15_{-0.43}^{+0.32}$	$1 . 09_{- 0.04}^{+ 0.03}$ $1.09_{-0.04}^{+0.03}$	$2 . 35_{- 0.09}^{+ 0.06}$ $2.35_{-0.09}^{+0.06}$	N/A ^(*)
	1eRASS J230557.7−442221	0.1318 ± 0.0011	$2 . 00_{- 0.27}^{+ 0.34}$ $2.00_{-0.27}^{+0.34}$	$0 . 85_{- 0.04}^{+ 0.05}$ $0.85_{-0.04}^{+0.05}$	$1 . 84_{- 0.08}^{+ 0.1}$ $1.84_{-0.08}^{+0.1}$	$0 . 38_{- 0.05}^{+ 0.21}$ $0.38_{-0.05}^{+0.21}$

Notes. Redshift z, mass M₅₀₀, radius R₅₀₀ and cluster temperature kT and corresponding 1σ errors were obtained from Bulbul et al. (2024), while R_vir is derived based on R_vir ≈ 10^1/3 R₅₀₀ given in Reiprich et al. (2013).

^(*)

Temperature of 1eRASS J230541.6−451201 provided in Bulbul et al. (2024) was unrealistic.

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