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Flaring Quasar and Possible Supernova discovered by MASTER

ATel #6013; V. Yecheistov, D. Denisenko, V. Lipunov, E. Gorbovskoy, N. Tiurina, P. Balanutsa, V. Kornilov, N. Shatskiy, V. Chazov, A. Kuznetsov, V. Vladimirov (Moscow State University, SAI), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk Solar Station of Pulkovo Observatory), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleshchuk, O. Gress (Irkutsk State University), V. Yurkov, Y. Sergienko, D. Varda, E. Sinyakov, A. Gabovich (Blagoveshchensk Educational University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), P. Podvorotny, V. Shumkov, S. Shurpakov (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez, F. Podest (OAFA)
on 26 Mar 2014; 12:12 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Quasar, Supernovae, Transient

MASTER OT J140552.41+634223.5 - flaring quasar

MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 14h 05m 52.41s +63d 42m 23.5s on 2014-03-25.03337 UT. The OT unfiltered magnitude is 18.6m (limit 19.2m). The OT is seen in 2 images. There is no minor planet at this place. We have reference image without OT on 2014-03-24.98955 UT with unfiltered magnitude limit 19.3m.

The OT is identical to the quasar SDSS J140552.29+634223.3 (g=19.96 r=20.24 i=19.84) with unknown redshift. It has an infrared counterpart AllWISE J140552.31+634223.3 (W1=15.75 W2=14.40 W3=11.32 W4=9.36). No previous flares were detected by CSS. This area of sky is not covered by GALEX. Follow up observations are required. Discovery and reference images are available at: http://master.sai.msu.ru/static/OT/140552.41634223.5.png

MASTER OT J152318.48+181733.3 - possible Supernova

MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 15h 23m 18.48s +18d 17m 33.3s on 2014-03-26.00834 UT. The OT unfiltered magnitude is 17.4m (limit 19.1m). The OT is seen in 5 images. There is no minor planet at this place. We have reference image without OT on 2013-12-25.10633 UT with unfiltered magnitude limit 18.5m.

The new object is located 1" west and 6" south of the center of galaxy SDSS J152318.53+181739.3 (g=20.13 r=19.81 i=19.55). Spectral confirmation is required. Discovery and reference images are available at: http://master.sai.msu.ru/static/OT/152318.48181733.3.png

List of Optical Transients discovered by MASTER

Global MASTER Robotic Net