GCN Circular 19055
Subject
LVC GW 150914: TAROT/TZAC Final analysis correction
Date
2016-02-22T16:48:20Z (10 years ago)
From
Michel Boer at CESR-CNRS <michel.boer@unice.fr>
An error was introduced in the last circular on the absolute magnitude
corresponding to our observations of GW 150914. The absolute magnitude
limit is -19.6.
Below the corrected circular:
A. Klotz (IRAP, CNRS/UPS), and M. Boer (ARTEMIS, CNRS/OCA/UNS) report on
behalf of the TZAC collaboration:
We have reduced and analysed the whole set of images acquired from
TAROT-Chile (see LV GCN 18348, 18332 for the field coordinates and
observing log). Depending on the field, the final limits are between R
>18.5 and 19.8. If we take a conservative limit of R> 18.5 at 2.8 days
after the GW event, this corresponds to an absolute magnitude of -19.6
at the distance of GW 150914.