First polarization study of the M87 jet and active galactic nuclei at submillimeter wavelengths with ALMA

Open Access

Table 2.

Frequency-averaged polarization properties of AGN targets (at a representative frequency of 343 GHz).

Source	Day	I^a	Spectral Index	LP	χ	χ₀	RM
	(2021)	(Jy)	(α)	(%)	(deg)	(deg)	(10⁵ rad m⁻²)
3C273	Apr 19	4.17 ± 0.42	–0.781 ± 0.008	1.67 ± 0.03	–64.19 ± 0.52	–38.9 ± 7.3	–5.8 ± 1.7
3C279	Apr 19	8.73 ± 0.87	–0.48 ± 0.04	10.63 ± 0.03	–46.711 ± 0.081	–41.2 ± 1.1	–1.26 ± 0.26
4C01.28	Apr 19	1.50 ± 0.15	–0.42 ± 0.03	8.67 ± 0.03	–37.72 ± 0.11	–37.4 ± 1.5	–0.08 ± 0.35
J1146+3958	Apr 19	0.396 ± 0.040	–0.4 ± 0.2	2.66 ± 0.07	87.27 ± 0.77	107 ± 11	–4.4 ± 2.5
J1337–1257	Apr 19	3.13 ± 0.31	–0.38 ± 0.05	16.68 ± 0.03	–7.310 ± 0.055	–8.15 ± 0.77	0.19 ± 0.18
J1512–0905	Apr 19	1.74 ± 0.17	–0.42 ± 0.04	1.07 ± 0.04	–65.72 ± 0.95	–96 ± 13	6.9 ± 3.1
M87	Apr 19	0.970 ± 0.097	–1.24 ± 0.02	2.80 ± 0.03	12.60 ± 0.35	8.5 ± 5.0	0.9 ± 1.1

non-VLBI scans
3C273^b	Apr 19	4.17 ± 0.42	–0.68 ± 0.01	…	…	…	…
4C01.28	Apr 19	1.50 ± 0.15	–0.36 ± 0.02	8.66 ± 0.03	–37.68 ± 0.11	–38.0 ± 1.6	0.07 ± 0.37
J1246–0730	Apr 19	0.280 ± 0.028	–0.56 ± 0.04	0.6 ± 0.1	–17.0 ± 6.6	–119 ± 95	23 ± 21

Notes.

^(a)

Errors in Stokes I include thermal and 10% absolute flux systematic uncertainty summed in quadrature.

^(b)

The short observation on 3C273 did not result in sufficiently good data to enable a meaningful polarization analysis.

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.