MASTER possible OT detection in Fermi GMB trigger 555287944 error box
ATel #11922; V. Lipunov (Lomonosov MSU), R. Rebolo, M. Serra Ricart (IAC), E. Gorbovskoy, N. Tiurina, V. Kornilov, A. Kuznetsov, P. Balanutsa, V. Vladimirov, D. Zimnukhov, D. Vlasenko (Lomonosov Moscow State University, SAI), D. Buckley (SAAO), A. Tlatov, V. Senik (KSS, Pulkovo Observatory), R. Podesta, F. Podesta, C. Lopez, C. Francile (OAFA), H. Levato (ICATE), O. Gres, N. M.Budnev , Yu. Ishmuhametova(ISU), A. Gabovich, V. Yurkov, Yu. Sergienko(BSPU), V. Shumkov, T. Pogrosheva
on 7 Aug 2018; 11:37 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Gamma Ray, Cataclysmic Variable, Gamma-Ray Burst, Transient, Variables
MASTER OT J004613.05+242014.1 discovery - OT during Fermi 555287944 trigger inspection
MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 00h 46m 13.05s +24d 20m 14.1s at 2018-08-07 00:28:20.467 UT , 109.3 min after Fermi 555287944 trigger (18/08/06 22:38:59.66UT, https://gcn.gsfc.nasa.gov/other/555287944.fermi ) during MASTER alert observation of this GRB alert (Lipunov et al., GCN #23091 https://gcn.gsfc.nasa.gov/gcn3/23091.gcn3 ).
The OT unfiltered magnitude is 17.0m (limit 17.9m).
The OT is seen in 4 images. There is no minor planet at this place.
We have reference image without OT on 2016-10-05.08846 UT with unfiltered
magnitude limit 20.2m.
There is no USNO-B1 sources, it means 22mag limit in history and more then 5m amplitude of current outburst. There is a Sloan star in 2.9" .
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/004613.05242014.1.png
The map of MASTER inspection and OT position is available at http://master.sai.msu.ru/static/OT/MASTERmapFermi555287944.jpg
MASTER Global Robotic Net
