Table 5.
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Estimated covering fractions of absorbing gas close to cluster pairs.

Samplenhitsntrials|$f_{\rm c}^{\rm flmnt}$||$f_{\rm c}^{\rm rand}$|Excess
(1)(2)(3)(4)(5)(6)
Δv = ±1000 km s−1 and Δd = 3 Mpc
H i77|$1.00^{+0.00}_{-0.23}$||$1.00^{+0.00}_{-0.05}$|∼1
NLA57|$0.71^{+0.18}_{-0.26}$||$0.93^{+0.07}_{-0.08}$|∼1
BLA57|$0.71^{+0.18}_{-0.26}$||$0.16^{+0.10}_{-0.10}$|∼4
O vi17|$0.14^{+0.26}_{-0.12}$||$0.15^{+0.03}_{-0.03}$|∼1
Δv = ±500 km s−1 and Δd = 3 Mpc
H i57|$0.71^{+0.18}_{-0.26}$||$0.58^{+0.03}_{-0.03}$|∼1
NLA37|$0.43^{+0.25}_{-0.22}$||$0.47^{+0.04}_{-0.04}$|∼1
BLA47|$0.57^{+0.22}_{-0.25}$||$0.08^{+0.05}_{-0.05}$|∼7
O vi17|$0.14^{+0.26}_{-0.12}$||$0.08^{+0.02}_{-0.02}$|∼1
Samplenhitsntrials|$f_{\rm c}^{\rm flmnt}$||$f_{\rm c}^{\rm rand}$|Excess
(1)(2)(3)(4)(5)(6)
Δv = ±1000 km s−1 and Δd = 3 Mpc
H i77|$1.00^{+0.00}_{-0.23}$||$1.00^{+0.00}_{-0.05}$|∼1
NLA57|$0.71^{+0.18}_{-0.26}$||$0.93^{+0.07}_{-0.08}$|∼1
BLA57|$0.71^{+0.18}_{-0.26}$||$0.16^{+0.10}_{-0.10}$|∼4
O vi17|$0.14^{+0.26}_{-0.12}$||$0.15^{+0.03}_{-0.03}$|∼1
Δv = ±500 km s−1 and Δd = 3 Mpc
H i57|$0.71^{+0.18}_{-0.26}$||$0.58^{+0.03}_{-0.03}$|∼1
NLA37|$0.43^{+0.25}_{-0.22}$||$0.47^{+0.04}_{-0.04}$|∼1
BLA47|$0.57^{+0.22}_{-0.25}$||$0.08^{+0.05}_{-0.05}$|∼7
O vi17|$0.14^{+0.26}_{-0.12}$||$0.08^{+0.02}_{-0.02}$|∼1

Notes. (1) Sample of absorbing gas. (2) Number of ‘hits’ defined as sightlines showing absorption in a given sample, within Δv = {±1000, ±500} km s−1 and within Δd = 3 Mpc. (3) Number of ‘trials’ defined as the total number of sightlines to look for absorption. (4) Covering fraction close to cluster pairs estimated as nhits/ntrials (uncertainties correspond to those of a binomial 1σ c.l.). (5) Covering fraction in a random sightline for a given Δv = {±1000, ±500} km s−1. (6) Excess covering fraction defined as |$f_{{\rm c}}^{\rm flmnt}/f_{{\rm c}}^{\rm rand}$|⁠.

Table 5.
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Estimated covering fractions of absorbing gas close to cluster pairs.

Samplenhitsntrials|$f_{\rm c}^{\rm flmnt}$||$f_{\rm c}^{\rm rand}$|Excess
(1)(2)(3)(4)(5)(6)
Δv = ±1000 km s−1 and Δd = 3 Mpc
H i77|$1.00^{+0.00}_{-0.23}$||$1.00^{+0.00}_{-0.05}$|∼1
NLA57|$0.71^{+0.18}_{-0.26}$||$0.93^{+0.07}_{-0.08}$|∼1
BLA57|$0.71^{+0.18}_{-0.26}$||$0.16^{+0.10}_{-0.10}$|∼4
O vi17|$0.14^{+0.26}_{-0.12}$||$0.15^{+0.03}_{-0.03}$|∼1
Δv = ±500 km s−1 and Δd = 3 Mpc
H i57|$0.71^{+0.18}_{-0.26}$||$0.58^{+0.03}_{-0.03}$|∼1
NLA37|$0.43^{+0.25}_{-0.22}$||$0.47^{+0.04}_{-0.04}$|∼1
BLA47|$0.57^{+0.22}_{-0.25}$||$0.08^{+0.05}_{-0.05}$|∼7
O vi17|$0.14^{+0.26}_{-0.12}$||$0.08^{+0.02}_{-0.02}$|∼1
Samplenhitsntrials|$f_{\rm c}^{\rm flmnt}$||$f_{\rm c}^{\rm rand}$|Excess
(1)(2)(3)(4)(5)(6)
Δv = ±1000 km s−1 and Δd = 3 Mpc
H i77|$1.00^{+0.00}_{-0.23}$||$1.00^{+0.00}_{-0.05}$|∼1
NLA57|$0.71^{+0.18}_{-0.26}$||$0.93^{+0.07}_{-0.08}$|∼1
BLA57|$0.71^{+0.18}_{-0.26}$||$0.16^{+0.10}_{-0.10}$|∼4
O vi17|$0.14^{+0.26}_{-0.12}$||$0.15^{+0.03}_{-0.03}$|∼1
Δv = ±500 km s−1 and Δd = 3 Mpc
H i57|$0.71^{+0.18}_{-0.26}$||$0.58^{+0.03}_{-0.03}$|∼1
NLA37|$0.43^{+0.25}_{-0.22}$||$0.47^{+0.04}_{-0.04}$|∼1
BLA47|$0.57^{+0.22}_{-0.25}$||$0.08^{+0.05}_{-0.05}$|∼7
O vi17|$0.14^{+0.26}_{-0.12}$||$0.08^{+0.02}_{-0.02}$|∼1

Notes. (1) Sample of absorbing gas. (2) Number of ‘hits’ defined as sightlines showing absorption in a given sample, within Δv = {±1000, ±500} km s−1 and within Δd = 3 Mpc. (3) Number of ‘trials’ defined as the total number of sightlines to look for absorption. (4) Covering fraction close to cluster pairs estimated as nhits/ntrials (uncertainties correspond to those of a binomial 1σ c.l.). (5) Covering fraction in a random sightline for a given Δv = {±1000, ±500} km s−1. (6) Excess covering fraction defined as |$f_{{\rm c}}^{\rm flmnt}/f_{{\rm c}}^{\rm rand}$|⁠.

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