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MASTER PSN Discovery During FRB181228 Error Line Inspection

ATel #12338; E. Gorbovskoy, F. Balakin, V. Lipunov, V. Kornilov, N. Tiurina, P. Balanutsa, A. Kuznetsov, D. Vlasenko, V. Vladimirov, D. Zimnukhov, (Moscow State University, SAI) N. Budnev, O. Gress (Irkutsk State University), R. Rebolo Lopez, M. Serra-Ricart (IAC), D. Buckley (SAAO), R. Podesta, F. Podesta, C. Lopez, C. Francile (OAFA), H. Levato (SJNU), V. Senik, A. Tlatov, D. Dormidontov (Kislovodsk solar station of the Pulkovo observatory RAS) A. Gabovich, V. Yurkov, D. Kobtsev, Y. Sergienko (Blagoveshchensk Educational University) V. Shumkov, S. Shurpakov (MASTER team members)
on 29 Dec 2018; 10:51 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Radio, Optical, Fast Radio Burst

Referred to by ATel #: 12343

MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the FRB 181228A ( Ferah et al., ATel #12335 ) 17723 sec after trigger time at 2018-12-28 18:44:13 UT, with upper limit up to 22.0 mag. Observations started at twilight, immediately after sunset. The observations began at zenit distance = 43 deg. The sun altitude is -11.0 deg.

MASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) was pointed to the FRB Alert181228.58 57672 sec after trigger time at 2018-12-29 05:50:03 UT, with upper limit up to 19.0 mag. The observations began at zenit distance = 24 deg. The sun altitude is -33.0 deg.

The galactic latitude b = -60 deg., longitude l = 98 deg.

MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 06h 09m 25.17s -47d 32m 48.6s on 2018-12-29.34613 UT. The OT unfiltered magnitude is 17.9 m. The OT is seen in 2 images. There is no minor planet at this place. OT is also visible on 3 MASTER-SAAO images today night.
The OT discovered in PGC 499631 Galaxy, approximately 1.5 degree far away from FRB error line. We also see this object in a slightly weaker (by ~ 0.5 magnitude) condition on the images obtained 2018-12-13 .
We have reference image without OT on 2017-11-11.33303 UT with magnitude limit in 'BLANK' filter 19.9m.

Spectral observations are required.

The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/060925.17-473248.6.png

Real time updated cover map available here:
http://master.sai.msu.ru/static//FRB/db/FRB181228A/img/FRB.png

MASTER Global Robotic Net