[vsnet-grb-info 22095] LIGO/Virgo S190425z: ZTF19aarzaod Imaging from Las Cumbres Observatory

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24194
SUBJECT: LIGO/Virgo S190425z: ZTF19aarzaod Imaging from Las Cumbres Observatory
DATE:    19/04/25 20:40:43 GMT
FROM:    Daichi Hiramatsu at Las Cumbres Observatory  <dhiramatsu at lco.global>

Daichi Hiramatsu (LCO/UCSB), Iair Arcavi (Tel Aviv University), Jamison
Burke (LCO/UCSB), D. Andrew Howell (LCO/UCSB), Curtis McCully (LCO), Craig
Pellegrino (LCO/UCSB) on behalf of the Las Cumbres GW Follow-up
Collaboration

On 2019-04-25 19:21:09 UT we obtained two g-band images of the GW optical
counterpart candidate ZTF19aarzaod (Kasliwal et al. 2019, GCN 24191) with
the Las Cumbres Observatory 1m telescope at the Siding Spring Observatory
in Australia. We detect the candidate with a magnitude of g = 21.3±0.14
(using PSF fitting), consistent with the Tan et al. (2019, GCN 24193)
measurement.