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GRB 221204.45

GCN Circular 33018

Subject

Swift GRB221204.45: Global MASTER-Net observations report

Date

2022-12-04T10:56:33Z (3 years ago)

From

Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>

V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, 
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin
(Lomonosov Moscow State University, SAI, Physics Department),

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

R. Rebolo, M. Serra 
(The Instituto de Astrofisica de Canarias),

D. Buckley 
(South African Astronomical Observatory),

O.A. Gres, N.M. Budnev
(Irkutsk State University, API),

L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez 
(INAOE, Guillermo Haro Astrophysics Observatory),

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

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


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the Swift GRB221204.45 (trigger No 1143281,19h 58m 06.86s , +35d 00m 18.4s, R=0.05) errorbox  201 sec after notice time and 282 sec after trigger time at 2022-12-04 10:49:47 UT, with upper limit up to  15.4 mag. The observations began at zenith distance = 47 deg. The sun  altitude  is -31.0 deg. 

The galactic latitude b =  3 deg., longitude l = 71 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2174196

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

     312 |         MASTER-Amur |  P\ |    60 | 12.3 |        
     397 |         MASTER-Amur |  P\ |    70 | 15.4 |        


The observation and reduction will continue. 
The message may be cited.

GCN Circular 33020

Subject

Swift GRB221204.45 AKO Upper Limit

Date

2022-12-04T15:53:52Z (3 years ago)

From

Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>

Mohammad Odeh of Al-Khatim Observatory (AKO) operated by the International
Astronomical Center, in Abu Dhabi, UAE. 

 

We observed the Swift GRB221204.45 detected by Swift (Trigger No 1143281)
with our 0.35m robotic telescope. The observation was done on 04 December
2022 from 15:05:55 to 15:18:02 (UT), 4.47 hours after the Swift trigger. We
obtained multiple 180-sec exposures in Ic filter. We did not detect any
afterglow within XRT localization. This is consistent with the reported
non-detections of (Lipunov et al., GCN 33018Loading...
 
 ).

 

The following upper limit was calculated using Atlas catalogue as a
reference:

----------------------------------------------------------------------------
-

JD (mid), T_mid-T0(hrs), Exposure (sec), Filter, Lim_mag

----------------------------------------------------------------------------
-

2459918.134358, 4.47, 5 x 180 (stacked), Ic, > 17.7

----------------------------------------------------------------------------
-

 

These magnitudes are not corrected for galactic extinction.