GRB 200415A: MASTER imspection and possible localisation
Abstract
MASTER OTJ 004724.94-252125.6s (AT2020hok) MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) proposed interesting source at (RA, Dec) = 00h 47m 24.94s -25d 21m 25.6s on 2020-04-17.15061 UT during GRB 200415 error box inspection (GCN 27579; 27580; 27586; 27595; 27597;). Inside galaxy NGC 0253 (Svinkin, 27595; Frederiks 27597;) there is an interesting extended object with an XMM X-ray source at 00 47 25.0800 -25 21 23.760 . This is may be globular cluster: B-V ~ 1 The unfiltered magnitude is 15.8m (mlim 17.9). The source is seen in 24 images. No optical variability detected. We have reference image on 2018-08-10.99113 UT with unfiltered mlim=20.3m. Follow up observations are required. The cover map is available at https://master.sai.msu.ru/site/master2/event.php?id=1337630 The inspection and reference images are available at: http://master.sai.msu.ru/static/OT/183315.33623157.0.png
- Publication:
-
GRB Coordinates Network
- Pub Date:
- April 2020
- Bibcode:
- 2020GCN.27599....1L