LIGO/Virgo G299232/PGWB170825.55: MASTER archive images of the SIWFT/UVOT and MASTER OT J033744.97+723159.0 in NGC1343 galaxy before 25
Abstract
Analyzing MASTER database archive images of MASTER OT J033744.97+723159.0 (Lipunov et al. GCN 21720, GCN2136) we found 1 image on 2017-08-19 22:32:24.443 with clearly seen OT with unfiltered m_OT=18.6 . During Fermi GBM trigger 521687456 inspection MASTER-Kislovodsk observed the area RA(2000)=(18.200 +29.540) +-5.25deg GRB_error (statistical only) on 2017-07-14 22:54:12UT with mlim=18.7 . There is SIWFT/UVOT source (Emery et al., LVC GCN 21733, 21758) from LIGO/VIRGO G299232 error-box (Siellez et al., GCN 21693) with m_OT~18.7 on 2017-07-14 22:54:12UT The archival image is available at: http://master.sai.msu.ru/static/OT/MASTERKislovodsk20170714.jpg We are gratiful all follow up photometry (Im et al. GCN21723; Im et al. GCN21738; Butler et al. GCN21742, Roberts et al. GCN 21752) and spectral (Jonker et al. GCN 21737; Roberts et al. GCN 21752; Copperwheat et al. GCN21755; Liming Rui et al. GCN 21780) observations. This SN IIb is placed very far from NGC 1343 galaxy center at distance ~20 kpc. The massive star progenitor in the no star formation area is very strange. This message can be citted.
- Publication:
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GRB Coordinates Network
- Pub Date:
- September 2017
- Bibcode:
- 2017GCN.21782....1L