VizieR Online Data Catalog: Multiwavelength obs. of GRB 161219B (Laskar+, 2018)

GRB 161219B was discovered by the Swift Burst Alert Telescope (BAT) on 2016 December 19 at 18:48:39 UT. The burst duration is T₉₀=6.94+/-0.79s. The optical afterglow was discovered by the Swift UV/Optical Telescope (UVOT) in observations beginning 112s after the BAT trigger (Marshall & D'Ai 2016GCN.20306....1M). Spectroscopic observations 36h after the burst with the X-shooter instrument on the European Southern Observatory (ESO) 8.2m Very Large Telescope (VLT) provided a redshift of z=0.1475 (2016GCN.20321....1T). The Swift X-ray Telescope (XRT) began observing GRB 161219B 108s after the BAT trigger. The X-ray afterglow was localized to RAJ2000=06:06:51.37, DEJ2000=-26:47:29.7, with an uncertainty radius of 1.4" (90% containment). XRT continued observing the afterglow for 123 days in photon counting mode.

We began observing GRB 161219B with two 1m telescopes in Sutherland (South Africa), which are operated by the Las Cumbres Observatory Global Network (LCOGT), on 2016 December 19, 20:43 UT, at 1.9h since the GRB, in Sloan Digital Sky Survey (SDSS) r' and i' filters. Observations with 1 and 2m LCOGT telescopes (formerly Faulkes Telescopes North and South) both in Hawaii and in Siding Springs (Australia) proceeded on a daily basis for 4 days, followed by a regularly increasing spacing until 2017 January 14 (25 days post-GRB). Additional optical observations with the 2m Liverpool Telescope (LT) in the same filters culminated on January 23 (35 days post-GRB). We obtained uBVgri imaging of GRB 161219B from 2016 December 22 to 2017 March 21 using the Direct CCD Camera on the Swope 1.0m telescope at Las Campanas Observatory in Chile. We observed GRB 161219B with the Low Resolution Imaging Spectrometer on the 10m Keck I telescope on 2017 March 29 in UBgRIz bands. We obtained seven epochs of near-IR observations in the JHK bands with the Wide-field Camera (WFCAM) mounted on the United Kingdom Infrared Telescope (UKIRT) spanning ~2.5 to ~270d. We present the results of our optical and near-IR (NIR) photometry, together with a compilation of all other optical observations reported in GCN circulars in Table 3.

We obtained ALMA observations of the afterglow at 1.3 days after the burst through program 2016.1.00819.T (PI: Laskar) in Band 3, with two 4GHz-wide basebands centered at 91.5 and 103.5GHz, respectively.

We observed the afterglow using the Karl G. Jansky Very Large Array (VLA) starting 0.5 days after the burst through program 15A-235 (PI: Berger). We detected and tracked the flux density of the afterglow from 1.2 to 37GHz over nine epochs until ~159d after the burst.

(4 data files).