The very steep spectrum radio halo in Abell 697 | Astronomy & Astrophysics (A&A)

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Table 1:

General properties of the galaxy cluster A 697.
RA_J2000	08h42m53.3s
Dec_J2000	+36 $^{\circ }$ 20 $^{\prime}$ 12 $^{\prime \prime}$
Bautz-Morgan Class	II-III
Richness	1
z	0.282
$\sigma_v$	1334 km s^-1a
$L_{\rm X[0.1-2.4 ~keV]}$	$10.57 \times 10^{44}$ erg s^-1
$M_{\rm V}$	$2.25 \times 10^{15}~M_{\odot}$ ^b
$R_{\rm V}$	2.90 Mpc^b

Notes. ^(a) Girardi et al. (2006); ^(b) Estimated from the $L_{\rm X}$ - $M_{\rm V}$ relation, see Eqs. (6) and (7) in Cassano et al. (2006).

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