The radio relic in Abell 2256: overall spectrum and implications for electron acceleration

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Table 3

Properties of the radio sources embedded in the radio relic emission.

(a) Source C flux densities.


	Component	63 MHz	153 MHz	327 MHz	351 MHz	1369 MHz	2273 MHz	2640 MHz	4850 MHz	10 450 MHz
		S (mJy)	S (mJy)	S (mJy)	S (mJy)	S (mJy)	S (mJy)	S (mJy)	S (mJy)	S (mJy)

	ALL	1048 ± 256 ^a	480 ± 50^b	246 ± 20^c	228.7 ± 17.7 ^a	56.5 ± 3.4^d	33.7 ± 1.8^d	27.3 ± 1.4 ^a	11.7 ± 1.3 ^a	<4.0 ± 0.9 ^d
	HEAD	144.5 ± 26.9 ^a	92.7 ± 10.7 ^a	63.4 ± 5.5 ^a	60.6 ± 5.1 ^a	25.0 ± 1.5^d	17.3 ± 0.9^d	14.0 ± 0.8 ^a	6.0 ± 0.9 ^a	2.1 ± 0.6^d
	TAIL	903.5 ± 257.0 ^a	387.3 ± 51.1 ^a	182.6 ± 20.7 ^a	168.1 ± 18.4 ^a	31.5 ± 1.9^d	16.4 ± 0.9^d	13.3 ± 1.6 ^a	5.7 ± 1.5 ^a	<1.9 ± 0.7^d

			(b) Source C spectral indices.


			Component


			ALL	0.88 ± 0.17 ^a	0.88 ± 0.17^d	1.03 ± 0.07^d	1.02 ± 0.16^d	1.40 ± 0.14^d
			HEAD	0.50 ± 0.10 ^a	0.50 ± 0.10 ^e	0.65 ± 0.10 ^f	0.72 ± 0.15^d	1.40 ± 0.19^d
			TAIL	0.95 ± 0.35 ^a	1.00 ± 0.22 ^a	1.23 ± 0.10 ^a	1.30 ± 0.16^d	1.42 ± 0.25 ^d

(c) Other sources flux densities.
Source	63 MHz	327 MHz	351 MHz	1369 MHz	1446 MHz	2273 MHz	2640 MHz	4850 MHz	4900 MHz	8500 MHz	10 450 MHz
	S(mJy)^a	S(mJy)	S(mJy)^a	S(mJy)^d	S(mJy)^c	S(mJy)^d	S(mJy)^a	S(mJy)^a	S(mJy)^g	S(mJy)^g	S(mJy)

K	16.3 ± 3.0	7.0 ± 1.0^c	6.7 ± 0.1	3.3 ± 0.2	3.4 ± 0.3	1.9 ± 0.2	1.6 ± 0.2	0.8 ± 0.1	(...)	(...)	≪ 1 ^a
J	<0.65	<1^c	1.0 ± 0.1	1.2 ± 0.1	2.1 ± 0.3	1.7 ± 0.2	<1.5	<1.2	(...)	(...)	<1^d
I	32.2 ± 20.3	17.0 ± 8.9 ^a	16.4 ± 8.7	9.3 ± 0.8	8.2 ± 1.8	6.8 ± 0.4	5.5 ± 0.3	2.4 ± 0.3	2.1 ± 0.5	1.2 ± 0.4	0.8 ± 0.2 ^a
I2	≪ 1	≪ 1 ^a	≪ 1	1.0 ± 0.07	(...)	1.9 ± 0.1	<1.8	<1.4	(...)	(...)	<1^d
K2	56.0 ± 27.8	(...)	11.3 ± 2.6	3.2 ± 0.19	(...)	2.0 ± 0.1	1.7 ± 0.1	1.0 ± 0.1	(...)	(...)	≪ 1 ^a
J2	7.9 ± 6	(...)	3.0 ± 1.0	1.4 ± 0.2	(...)	1.1 ± 0.2	1.0 ± 0.1	0.7 ± 0.1	(...)	(...)	≪ 1 ^a
I3	35.2 ± 18.6	(...)	8.9 ± 2.1	3.0 ± 0.2	(...)	2.0 ± 0.1	1.8 ± 0.1	1.1 ± 0.1	(...)	(...)	≪ 1 ^a
G2	23.9 ± 13.7	(...)	5.5 ± 1.4	1.7 ± 0.1	(...)	1.1 ± 0.1	1.0 ± 0.1	0.6 ± 0.1	(...)	(...)	≪ 1 ^a

Notes. Values in italic are assumed or extrapolated in this work, while values in normal font are measured values either in this work or published in the literature. For more details consult references below and text.

^(a)

Extrapolated in this work.

^(b)

Measured byvan Weeren et al. (2012).

^(c)

Measured by Rottgering et al. (1994).

^(d)

Measured in this work.

^(e)

Deduced from Fig. 5.4 Right site, Intema (2009).

^(f)

Deduced from Fig. 7 Right site, Rottgering et al. (1994).

^(g)

Measured by Lin et al. (2009).

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