LIGO/Virgo G297595: MASTER MASTER Bright PSN detection in error-box
Abstract
Following Katsavounidis et al. (GCN 21474), we report two optical transients detected. 1) MASTER OT J030141.96-230037.8 discovery During MASTER-OAFA inspection of LIGO GW G297595 MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 03h 01m 41.96s -23d 00m 37.8s on 2017-08-16.31422 UT. The OT unfiltered magnitude is 17.5m (mlim=19.7m). The OT is seen in 2 image (MASTER inspection mode) at 2017-08-16 07:32:29 and 2017-08-16 07:17:07UT There is no minor planet at this place. We have reference images without OT on 2017-03-10.01 UT with magnitude limit in unfiltered 18.6m. Spectral observations are required. The discovery and reference images are available at:http://master.sai.msu.ru/static/OT/030141.96-230037.8.png 2) MASTER OT J015849.50-230853.7 detection MASTER-OAFA auto-detection system discovered OT source at (RA, Dec) = 01h 58m 49.50s -23d 08m 53.7s on 2017-08-15.27118 UT. The OT unfiltered magnitude is 16.7m (mlim=19.3m). The OT is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2016-09-22.25362 UT with unfiltered magnitude limit is 18.4m. There is USNO-B1 star in 2" with known only B1=21.47,B2=20.96 Spectral observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/015849.50-230853.7.png This message can be citted.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2017
- Bibcode:
- 2017GCN.21499....1L