LIGO/Virgo G298048: Further ATCA follow-up of SSS17a in NGC 4993
Abstract
Following Lynch et al. (LVC GCN 21670), we observed a third epoch of NGC 4993 with the Australia Telescope Compact Array at 8.5 and 10.5 GHz. Observations started at 2017-08-27 23:26:24.9 UT and ended at 2017-08-28 9:00:00 UT with approximately 2.3 hours of on-source time. We fit and subtracted a point-source at the optical position of NGC 4993 (13:09:47.71, -23:23:01.79; Skrutskie et al. 2003, 2MASS Extended Source Catalog). From this we set a 3-sigma upper limit of 54 uJy and 39 uJy on radio emission from SSS17a at 8.5 and 10.5 GHz respectively. Subsequent epochs are planned. Thank you to CSIRO staff for supporting these observations.
- Publication:
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GRB Coordinates Network
- Pub Date:
- August 2017
- Bibcode:
- 2017GCN.21740....1L