LIGO/Virgo G268556: Mini-MegaTORTORA follow-up observations
Abstract
Following GCN #20364 on the possible GW event G258556, we observed part of its sky localization region with Mini-MegaTORTORA nine-channel wide-field monitoring system (located at Special Astrophysical Observatory near Russian 6-m telescope) starting on 2017-01-04 18:32:48 UT (8.3 hours since trigger) under moderate weather conditions. The system field of view has been centered on RA, Dec = 136, 54 covering roughly 900 square degrees simultaneously. This covers about 30% of the probability in the BAYESTAR map. Coverage map of all nine channels is shown at http://mmt.favor2.info/scheduler/1416/lvc Every channel acquired 10 x 60s exposure images in white light between 2017-01-04 18:32:48 UT and 2017-01-04 18:41:50 UT. The footprints of acquired images are uploaded to GraceDB. Quick-look analysis did not reveal any transient brighter than V~14.5 magnitude in the data.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- January 2017
- Bibcode:
- 2017GCN.20373....1K