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GCN Circular 24416

Subject
IceCube-190504A: MASTER optical monitoring analysis
Date
2019-05-07T10:57:24Z (5 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, O. Gress, E. Gorbovskoy, N.Tyurina, V.Kornilov, P.Balanutsa, D.Vlasenko, F.Balakin, V.Vladimirov, 
D.Zimnukhov, A.Kuznetsov, A. Chasovnikov, V.Topolev(Lomonosov Moscow State University, SAI, Physics Department),

R. Podesta, C. Lopez, C.Francile, F. Podesta (Observatorio Astronomico Felix Aguilar OAFA, San Juan National University),

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

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

D. Buckley (South African Astronomical Observatory),

N.M. Budnev, O.Ershova (Applied Physics Institute, Irkutsk State University),

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

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

MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)
located in South African Astronomical Observatory was pointed to the 
IceCube-190504A (Kopper et al. GCN 24392) alert
39 sec after notice time (133 sec after trigger time) at 2019-05-04 18:27:31 UT (Lipunov et al. GCN 24395).

MASTER-OAFA robotic telescope started IceCube-190504A inspection at 2019-05-04 23:10:52.949 UT.
MASTER auto-detection system didn't find new or variable sources, that can be connected with this alert. But.

MASTER observed this error-box during the following GRB/LVC alerts observations:

    event_name |        grbtime      |     GRBcenter_coord2000       |Er.B.deg|Exper.| MASTERobs_starttime | mlim.
--------------+---------------------+-------------------------------+-------+---------+-------------------------+-------
  GRB190504.77 | 2019-05-04 18:25:18 | (  4h 23m 09s , -37d 26m 35s) |   1.2 | ICECUBE | 2019-05-04 18:27:31 |  18.6
  GRB190313.15 | 2019-03-13 03:36:00 | (  4h 27m 52s , -37d 12m 00s) |  14.3 | FERMI   | 2019-03-13 20:40:04 |  18.8
  GW190425     | 2019-04-29 00:21:41 |  LVC S190425z                 |       | LVC     | 2019-04-29 00:06:38 |  18.3
  GRB180826.06 | 2018-08-26 01:19:15 | (  4h 09m 50s , -22d 26m 59s  |   6.9 | FERMI   | 2018-08-29 02:38:42 |  19.6
  GRB180508.64 | 2018-05-08 15:23:50 | (  3h 50m 48s , -39d 12m 00s) |   9.1 | FERMI   | 2018-05-09 16:55:07 |  19.0
  GRB180423.34 | 2018-04-23 08:16:05 | (  7h 13m 24s , -30d 30m 00s) |  37.9 | FERMI   | 2018-04-24 18:17:15 |  18.5
  GRB180311.07 | 2018-03-11 01:45:53 | (  4h 28m 24s , -43d 18m 00s) |  11.1 | FERMI   | 2018-03-11 20:37:31 |  19.4
  GRB180309.14 | 2018-03-09 03:28:35 | (  3h 55m 52s , -39d 25m 00s) |  12.7 | FERMI   | 2018-03-10 02:37:03 |  18.6
  GRB180114.45 | 2018-01-14 10:42:23 | (  3h 40m 40s , -44d  9m 00s) |  10.4 | FERMI   | 2018-01-14 21:11:40 |  18.1
  GRB171121.83 | 2017-11-21 20:01:59 | (  5h  7m 40s , -36d 58m 00s) |   8.7 | FERMI   | 2017-11-22 01:37:28 |  19.3
  GRB171004.78 | 2017-10-04 18:46:40 | (  2h 56m 40s , -37d 10m 59s) |  26.6 | FERMI   | 2017-10-06 21:05:18 |  18.7
  GRB171004.67 | 2017-10-04 16:07:16 | (  5h 22m 52s , -26d 15m 00s) |  17.0 | FERMI   | 2017-10-06 21:05:18 |  18.7
  GRB170422.37 | 2017-04-22 08:58:23 | (  4h 17m 52s , -45d 52m 60s) |  18.4 | FERMI   | 2017-04-24 23:04:59 |  18.3
  GRB170307.22 | 2017-03-07 05:15:05 | (  4h 18m 48s , -30d 58m 60s) |   6.4 | FERMI   | 2017-03-07 19:49:33 |  18.9
  GRB160430.35 | 2016-04-30 08:22:08 | (  2h 58m 56s , -16d 34m 00s) |  36.6 | FERMI   | 2016-04-30 16:54:00 |  18.9
  GRB160319.34 | 2016-03-19 08:08:10 | (  2h 57m 52s , -14d 24m 00s) |  35.5 | FERMI   | 2016-03-19 19:29:48 |  18.5
  GRB150824.55 | 2015-08-24 13:14:25 | (  4h  2m 56s , -46d 43m 60s) |  13.4 | FERMI   | 2015-08-26 02:14:38 |  20.3
  GRB150806.63 | 2015-08-06 15:07:37 | (  3h 55m 12s , -54d 54m 00s) |  34.8 | FERMI   | 2015-08-09 03:34:30 |  19.7
  GRB150801.09 | 2015-08-01 02:16:43 | (  4h 19m 08s , -36d  6m 00s) |  10.9 | FERMI   | 2015-08-01 02:17:04 |  15.3
  GRB141222.41 | 2014-12-22 09:53:57 | (  6h 26m 56s , -54d 27m 00s) |  34.7 | FERMI   | 2014-12-24 22:12:28 |  19.8

and during own survey Dec2014-May2019.

We checked Swift sources (Keivani et al. GCN 24405 )in MASTER database.

The 7th source is in maximum in optic now

1) 66.17568d, -37.93938d
m_OT=19.6 at 2014-12-24 22:12:28.681, m_OT=19.6 at 2018-11-15 00:47:43.986, m_OT<mlim=18.6 now

2)66.39382d, -37.70566d
no OT in MASTER database (see mlims in Table)

3)65.19589d, -37.26399d
no OT in MASTER database (see mlims in Table)

4) in 4.3" there is optical source at RA,Dec2000=04h 24m 50.04s , -36d 55m 44.39s with m_OT=19.1 (candidate to QSO (Guo+, 
2018) in VIZIER database in 2.2"), marginally seen at current image with m_OT<mlim(18.6)~19m.
It was 18.4(unfiltered) at 2016-12-25 05:25:09.6 UT (not in maximum now)

5) 65.70905d, -37.94807d
in 4.2" there is optical source at  	4h 22m 49.86s , -37d 56m 53.10s 
and in 2.2" there is a source - AGN candidates (Assef+, 2018) , see VIZIEr database)
usual brightness in MASTER database 19.1, marginally seen in current images, it means the source didn't become brighter in optic.


6)66.39458d, -37.70534d
no OT in MASTER database (see mlims in Table)

7) 65.29548d, -38.09169d
This source is in maximum now, see MASTER photometry  at 
http://observ.pereplet.ru/images/MASTEROAFAphotomSwift7.png



In the error-box there are also the following objects:
1) AGNs MS 04206-3839 ,
RA,Dec2000=04 22 20.7 -38 32 17 (http://www.obs-hp.fr/catalogues/veron2_12/veron_v12_table3.dat)
m <~ mlim18.6 (marginally seen) now. In MASTER archive database:
unfiltered m=19.3 at 2018-11-14 23:50:31UT
m=18.9 at 2018-03-13 02:44:31UT
m=20.2 at 2016-08-05 09:30:55UT

2) MS 04200-3838
RA,Dec2000=04 21 49.7 -38 31 26 (http://ftp.bao.ac.cn/ftp/cats/J_other/PASA/30.4/move.dat)
only mlim=18.6 now (in VIZIER m=21.1 in B (Souchay+, 2019) )

3) 3FGL_J0420.6-3742 (=3FHL J0420.4-3744 BL Lac
RA,Dec2000=04 20 25.05 -37 44 45.05
m=19.1 in MASTER database   at 2017-11-22 01:29:59.158 and
  marginally seen now  m_BLA <~ mlim=18.6

4) PKS_0426-380
(RA,Dec2000=04 28 40.42 -37 56 19.58)
Photometry is available at
http://observ.pereplet.ru/images/MASTERphotom042840.42-375619.58.jpg

5)PKS 0422-380 (=3FHL J0428.6-3756 from Garrappa et al. GCN24401)
RA,Dec2000=04 24 42.2 -37 56 20 (http://hpiers.obspm.fr/webiers/icrf/catalogues/icrf.dico)
only mlim=18.6 now (at 2019-05-05 23:09:38UT), in MASTER archive:
m_OT=19.6 at 2018-11-15 00:47:43UT
m_OT=18.9 at 2016-08-05 09:30:55UT

6) Q 0420-3838 
RA,Dec2000=04 21 50.08 -38 31 14.61 (https://iopscience.iop.org/1538-3881/121/5/2843/fulltext/datafile2.txt)
m_QSO=20.34 at 2018-11-15 00:46:05.261UT and is less then current mlim, see Table

7) 1 UG -- Gaia16aai (RA,Dec2000=04:20:42.200 -38:19:33.90)
not in bright state with current mlim=18.6 (17.6 in history https://www.aavso.org/vsx/index.php?view=detail.top&oid=469696)

9) there was supernova SN2017jcv (ASASSN-17rg) in nearest years history
10) 296 galaxies from GLADE catalogue (Dalya et al. MNRAS 479(2), 2374 (2018)

Analysis will be continued.

This error-box was observed also by ANTARES (Coleiro et al. GCN 24400) and Insight-HXMTYi (Yi et al. GCN 24407)

The message may be cited.
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