The Crab Nebula at sub-arcsecond resolution with the International LOFAR Telescope

Open Access

Table 2

Properties of the regions highlighted in Fig. 5, left.

Region	RA (hh:mm:ss)	Dec (dd:mm:ss)	ν_turnover (MHz)	EM_{Z=2,T=15 000} (pc cm⁻⁶)	n_{e l=0.03} (cm⁻³)
1	5:34:29.0	+22:00:37.0	295	26634 ± 1361	956 ± 161
2	5:34:29.4	+22:00:30.4	307	28990 ± 2817	998 ± 173
3	5:34:29.6	+22:00:28.5	287	25155 ± 607	929 ± 155
4	5:34:30.6	+22:00:23.7	179	9569 ± 339	573 ± 96
5	5:34:31.5	+22:00:26.7	219	14411 ± 846	703 ± 119
6	5:34:31.8	+22:00:28.4	242	17713 ± 804	780 ± 131
7	5:34:33.3	+22:00:46.2	251	19123 ± 1069	810 ± 137
8	5:34:33.8	+22:00:50.5	249	18737 ± 577	802 ± 134
9	5:34:37.4	+22:00:51.8	228	15624 ± 2845	732 ± 139
10	5:34:36.0	+22:00:52.0	151	6748 ± 272	481 ± 80
11	5:34:34.5	+22:00:55.0	201	12131 ± 36	645 ± 107
12	5:34:32.6	+22:00:40.0	197	11568 ± 1439	630 ± 112
13	5:34:28.6	+22:00:38.9	241	17590 ± 2225	777 ± 138
14	5:34:29.8	+22:00:45.6	176	9205 ± 124	562 ± 93

Notes. The column ν_turnover corresponds to the best-fit turnover frequency in Eq. (1), where the ionised material becomes optically thick. See Sect. 3.3 for the definitions of EM_{Z=2,T=15 000} and n_{e l = 0.03}.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.