Highlights

News and info about the collaboration activities.

The interactive map shows the VLT Survey Telescope (VST) pointings of GW 151226 in GCN CIRC. 18734.
For each pointing the integrated probability is reported according to the BAYESTAR skymap issued in GCN CIRC. 18728.
In white the 90% the probability is mapped using the Multi Order Coverage approach (MOC).

TITLE: GCN CIRCULAR
NUMBER: 18734
SUBJECT: LIGO/Virgo G211117: INAF VST-ESO PARANAL observations
DATE: 15/12/28 15:21:17 GMT

A.Grado (INAF-OAC), G.Greco (Urbino University/INFN Firenze), E. Brocato (INAF-OAR), M. Branchesi (Urbino University/INFN Firenze), E. Cappellaro (INAF-OAPd), L.Amati (INAF-IASF Bo), L. A. Antonelli, (INAF-OAR), P. Astone (INFN-Roma), S. Campana, S. Covino, P. D’Avanzo (INAF-OAB), V. D’Elia (INAF-ASDC), F. Getman (INAF-OAC), G. Giuffrida (INAF-ASDC), L. Limatola (INAF-OAC), M. Lisi (INAF-OAR), S. Marinoni, P. Marrese (INAF-ASDC), A. Melandri (INAF-OAB), L. Nicastro, E. Palazzi (INAF-IAFS Bo), E. Pian (SNS-Pisa), S. Piranomonte, L. Pulone (INAF-OAR), F. Ricci (Sapienza University), G. Stratta (Urbino University/INFN Firenze), G. Tagliaferri (INAF-OAB), V. Testa (INAF-OAR), L. Tomasella (INAF-OAPd) on behalf of the INAF Gravitational Astronomy group report:

We observed 72 square degree of the skymap of the advanced LIGO and Virgo trigger G211117, with the VLT Survey Telescope (VST) at ESO-Paranal equipped with OMEGACAM (FOV=1 square degree). The r SDSS filter was used. The observations are divided in 8 regions 3 x 3 square degree each, centered on the following coordinates RA, Dec (J2000):

North
02:29:55.200 +16:13:12.00
02:38:02.208 +19:13:12.00
02:46:35.712 +22:12:33.84
02:59:40.800 +25:13:12.00
03:06:55.128 +28:13:12.00
03:18:23.712 +31:13:12.00

South
13:45:53.208 -26:48:00.00
13:39:47.208 -23:48:00.00

The first group of observations on the North area started at 2015-12-28T01:14:02.794 UT and finished at 2015-12-28T04:00:48.959 UT, while the observations in the South area started at 2015-12-28T07:51:18.143 UT and finished at 2015-12-28T08:55:27.653 UT.
The image analysis is ongoing. Further observations of these fields are planned.

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