A correction to ATel #15115
ATel #15116; V. V. Neustroev (U. Oulu), J. P. Osborne, K. L. Page (U. Leicester)
on 15 Dec 2021; 14:09 UT
Credential Certification: Vitaly Neustroev (vitaly@neustroev.net)
Subjects: X-ray, Cataclysmic Variable, Transient, Variables
We report an erratum in ATel #15115. It has been brought to our attention that the Astronomer's Telegram requires that quantitative measurements must include uncertainties, and approximate numbers are not allowed. We, therefore, update the information from ATel #15115 with error bars included:
The mean XRT count rate of the first 2 ksec observation of AT2021afpi started on November 28, 19:33 UT was 0.71 +/- 0.02 c/s. After that, the transient rapidly faded before stabilizing at 0.020+/-0.004 c/s on December 4-5. On December 11, the X-ray flux dropped to the level of 0.005 +0.002/-0.001 c/s, but returned back to the level of 0.018+/-0.004 c/s by the time of the next observation on December 13.
