{
  "createdOn": 1707050380366,
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
  "subject": "IceCube Alert 240204.38: Global MASTER-Net observations report",
  "body": "V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik,  D. Vlasenko,\nG.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gress, N.M. Budnev, O.Ershova\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,\nA.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nV. Yurkov, A. Gabovich\n(Blagoveschensk Educational State University)\n\nMASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the IceCube Alert 240204.38 (trigger No 62272876,23h 14m 35.52s , +11d 03m 32.4s, R=0.51) errorbox  6920 sec after notice time and 6988 sec after trigger time at 2024-02-04 11:05:28 UT, with upper limit up to  18.9 mag. Observations started at twilight.  The observations began at zenith distance = 60 deg. The sun  altitude  is -10.4 deg. \n\nThe galactic latitude b = -45 deg., longitude l = 89 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=2371099\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n    7018 | 2024-02-04 11:05:28 |        MASTER-Tunka | (23h 14m 28.24s , +11d 09m 19.8s) |   C |    60 | 16.2 |  Coadd \n    7321 | 2024-02-04 11:10:31 |        MASTER-Tunka | (23h 08m 00.78s , +10d 47m 13.2s) |   C |    60 | 14.4 |  Coadd \n    7709 | 2024-02-04 11:16:59 |        MASTER-Tunka | (23h 16m 05.80s , +10d 48m 14.4s) |   C |    60 | 14.7 |  Coadd \n    8468 | 2024-02-04 11:29:38 |        MASTER-Tunka | (23h 14m 28.13s , +11d 09m 38.0s) |   C |    60 | 14.6 |  Coadd \n    8843 | 2024-02-04 11:35:53 |        MASTER-Tunka | (23h 07m 54.64s , +10d 47m 24.9s) |   C |    60 | 14.1 |  Coadd \n    9217 | 2024-02-04 11:42:07 |        MASTER-Tunka | (23h 16m 02.60s , +10d 48m 22.4s) |   C |    60 | 14.7 |  Coadd \n    9470 | 2024-02-04 11:46:20 |        MASTER-Tunka | (23h 14m 20.74s , +11d 07m 47.7s) |   C |    60 | 17.9 |  Coadd \n    9536 | 2024-02-04 11:47:25 |        MASTER-Tunka | (23h 07m 58.87s , +10d 46m 11.9s) |   C |    60 | 17.8 |  Coadd \n    9893 | 2024-02-04 11:53:23 |        MASTER-Tunka | (23h 16m 01.82s , +10d 46m 04.6s) |   C |    60 | 18.9 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.\n\n",
  "bibcode": "2024GCN.35663....1L",
  "submittedHow": "email-legacy",
  "circularId": 35663
}