Low-frequency radio emission in the massive galaxy cluster MACS J0717.5 + 3745

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Table 1

GMRT observations and data from archive.

Observation	VLSS^a	GMRT^b	WSRT^c	GMRT	NVSS^d	FIRST^e

Frequency (MHz)	74	235	325	610	1420	1420
Bandwidth (MHz)	1.56	2 × 16	120	2 × 16	2 × 50	50
Channel width	122 KHz	125 kHz	5 MHz	125 kHz	50 MHz	3 MHz
Observation dates	Archive	5 Nov., 2012	Archive	5 Nov., 2012	Archive	Archive
Total on-source time (h)	−	~5	−	~5	−	−
Synthesized beam (arcsec)	80 × 80	13 × 11	54 × 54 cosecδ	5.7 × 4.8	45 × 45	5 × 5
rms noise, σ(mJy beam^-1)	73	0.65	3.1	0.048	0.42	15

Reference.

^(a)

Cohen et al. (2007),

^(b)

23rd cycle observations,

^(c)

Rengelink et al. (1997),

^(d)

Condon et al. (1998),

^(e)

Becker et al. (1995).

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