[vsnet-grb-info 20847] IceCube-171106A: MASTER optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  22945
SUBJECT: IceCube-171106A: MASTER optical observation 
DATE:    18/07/14 12:49:20 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov,  N.Tiurina, A.Kuznetsov, V.Chazov,
I. Gorbunov, D. Vlasenko, D.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov
Lomonosov Moscow State University,SAI

D. Buckley,
South African Astronomical Observatory (SAAO)

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias (IAC)

A. Tlatov, V.Senik, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory

R. Podesta, F. Podesta, C. Lopez, C.Francile
Observatorio Astronomico Felix Aguilar (OAFA)

H.Levato,
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

O. Gres, N.M.Budnev, Yu.Ishmuhametova
Irkutsk State University (ISU)

A. Gabovich, V. Yurkov, Yu. Sergienko
Blagoveschensk Educational State University (BSPU)

MASTER Global Robotic Net observed the field of the IceCube EHE event
IceCube-171106A Taboada et al. GCN 22105
(also observed by Swift, see Keivani et al. ATEL #10942)

The IC171106A altitude at alert time (Date: 17/11/06  18:39:39.21 UT
J2000 RA:340.00 (-0.50/+0.70 deg 90% PSF containment)
       Dec: +7.40 (-0.25/+0.35 deg 90% PSF containment))

MASTER-IAC  (Tenerife)
Object: Altitude: 54.48 Azimuth: 300.17
Sun: Altitude: -5.64 Azimuth: 74.70
Moon: Altitude: -22.37 Azimuth: 232.01
MASTER-SAAO (South Africa)

Object: Altitude:  49.68  Azimuth: 169.40
Sun:    Altitude: -18.49  Azimuth:  56.02
Moon:   Altitude: -11.82  Azimuth: 255.21

MASTER-Kislovodsk (Russia)

Object: Altitude:  45.89  Azimuth:  43.01
Sun:    Altitude: -50.59  Azimuth: 123.99
Moon:   Altitude:  26.64  Azimuth: 269.05

MASTER-Tavrida

Object: Altitude:  48.79  Azimuth: 31.15
Sun:    Altitude: -44.81  Azimuth: 115.65
Moon:   Altitude:  20.62  Azimuth: 263.71

MASTER-Kislovodsk pointed to the IC 171106A at  2017-11-06 18:40:45UT, 66s after trigger time .
There were 4 alert images:
Date,UT                 Exp     mlim    MASTERtube
2017-11-06 18:50:16	180	19.3	EAST
2017-11-06 18:47:06	180	19.3	EAST
2017-11-06 18:43:56	180	19.1	EAST
2017-11-06 18:40:45	180	18.9	EAST

then MASTER-Kislovodsk returned to Fermi trigger 531665037 inspection https://gcn.gsfc.nasa.gov/other/531665037.fermi  (GRB_TIME: 17/11/06 12:43:52.33UT 02h 00m 50s +59d 29' 24")

MASTER-SAAO was pointed to IC 171106A at  2017-11-06 18:40:50UT 71s after trigger time
Unfiltered limits of alert images are the following:
Date,UT                 Exp     mlim    MASTER_tube
2017-11-06 18:40:50	540	20.3	EAST
2017-11-06 18:40:50	180	19.9	EAST
2017-11-06 18:40:50	540	20.6	WEST
2017-11-06 18:40:50	180	20.2	WEST
2017-11-06 18:44:07	180	20.0	EAST
2017-11-06 18:44:07	180	20.2	WEST
2017-11-06 18:47:22	180	20.0	EAST
2017-11-06 18:50:38	180	20.0	EAST
2017-11-06 18:50:38	180	20.1	WEST
2017-11-29 18:44:51	180	19.4	EAST
2017-11-29 18:44:51	540	19.6	EAST
2017-11-29 18:44:51	180	19.1	WEST
2017-11-29 18:44:51	540	19.9	WEST
2017-11-29 18:49:52	180	19.0	EAST
2017-11-29 18:49:52	180	19.4	WEST
2017-11-29 18:53:56	180	18.9	EAST
2017-11-29 18:53:56	180	19.1	WEST
2017-11-29 19:11:09	540	19.8	EAST
2017-11-29 19:11:09	180	19.0	EAST
2017-11-29 19:11:09	180	19.4	WEST
2017-11-29 19:11:09	540	20.0	WEST
2017-11-29 19:17:27	180	19.1	EAST
2017-11-29 19:17:27	180	19.3	WEST
2017-11-29 19:24:21	180	19.1	EAST
2017-11-29 19:24:21	180	19.3	WEST
2017-11-29 19:30:27	180	19.0	EAST
2017-11-29 19:30:27	180	19.3	WEST


MASTER-IAC pointed to the IC 171106A at  2017-11-06 18:41:11UT   91.8s after  trigger  time.
The Sun_Altitude  was   -5.64, and  so as MASTER-Kislovodsk and MASTER-SAAO followed up alert observations,
  MASTER-IAC followed Fermi inspection after sunset, and followed IceCube inspection on next day by usual inspect program

2017-11-07 19:33:49	540	20.0	EAST
2017-11-07 19:33:49	180	19.3	EAST
2017-11-07 19:37:42	540	20.0	WEST
2017-11-07 19:37:42	180	19.6	WEST
2017-11-07 19:37:36	180	19.4	EAST
2017-11-07 19:41:35	180	19.6	WEST
2017-11-07 19:41:35	180	19.4	EAST
2017-11-07 19:45:36	180	17.8	WEST
2017-11-07 19:49:45	180	18.7	EAST
2017-11-07 19:53:17	180	18.9	EAST
2017-11-07 19:53:17	180	18.0	WEST

MASTER-Tavrida started  inspect  IC171106A in a weak as usual inspect 
program on 2017-11-13 19:03:59 UT with the following unfiltered limits

Date,UT                 Exp     mlim  MASTER_tube
2017-11-13 19:55:03	180	18.4	EAST
2017-11-13 19:55:03	180	17.8	WEST
2017-11-13 19:51:01	180	18.8	WEST
2017-11-13 19:47:28	180	18.8	WEST
2017-11-13 19:32:55	180	18.8	WEST
2017-11-13 19:29:21	180	18.8	WEST
2017-11-13 19:25:45	540	19.5	WEST
2017-11-13 19:25:45	180	18.8	WEST
2017-11-13 19:07:32	180	18.0	WEST
2017-11-13 19:03:59	180	18.0	WEST


There is one BL Lac type object with Radio and Gamma  inside 
IceCube error box (see Gamma-ray blazar candidates (Sowards-Emmerd+, 2005) 
J223810.3+072413 .

There are large number AGN and QSO candidates.

This message may be cited.