Submillimeter polarization and variability of quasar PKS 1830–211

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Volume 621 (January 2019)

A&A, 621 (2019) A18

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Table 1.

Summary of the ALMA observations of PKS 1830−211 in May-June 2015.

Date	Time range (UTC)	Parallactic angle (°)	ALMA band	Frequencies^a (GHz)	Feed angle^b (°)	Flux/Bandpass calibrator
2015 May 14	06:31:59.9–06:56:17.5	260–257	B8	403.5, 401.5, 413.8, 415.5	0	Titan/J1924−292
2015 May 19	07:10:30.7–08:17:17.0	230–100	B9	647.7, 649.9, 651.7, 653.6	−180	Titan/J1924−292
2015 May 19	10:22:56.5–10:46:44.4	102–101	B7	327.0, 337.1, 339.0	−53.6	Ceres/J1924−292
2015 May 20	08:17:14.6–08:38:54.3	100–99	B8	428.5, 430.3, 440.6, 442.4	0	Titan/J1924−292
2015 Jun 06	04:23:14.4–04:43:52.1	261–261	B8	480.2, 482.0, 492.2, 494.0	0	Titan/J1924−292

Notes.

^(a)

Frequencies at the center of each 1.875 GHz wide spectral window.

^(b)

Angle of the X and Y polarizers with respect to the alt-az axes of the antenna mount.

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