GRB 230228A: Miryang Arirang Astronomical Observatory (MAAO) 0.7-m telescope optical upper limit
Abstract
We searched for the optical counterpart of a possible short burst GRB 230228A (Dichiara et al. GCN #33378) with the 0.7-m telescope at Miryang Arirang Astronomical Observatory (MAAO), located at Miryang, Republic of Korea. We observed the center of Swift-XRT localization (RA, Dec = 01:13:30.73, +44:28:58.4; Evans et al. GCN #33379) +4.09 hours after report, but could not find any possible transient within the field of view (28.2' x 28.2'). We performed flux calibration with the PS1 catalog and used the AB magnitude system. Each depth means 3 and 5 sigma upper limit for a point source detection. The magnitudes are not corrected for galactic extinction. object exposures date-obs (UT) MJD band Depth(3σ) Depth(5 σ) FWHM(") ========================================================================================= GRB230228A 60sx8 2023-02-28T09:56:11 60003.414 V <18.77 <18.21 2.8 Gravitational wave Electromagnetic wave Counterpart Korean Observatory (GECKO) is a network of 10+ 0.5m to 1m class telescopes over the world. ᐧ
- Publication:
-
GRB Coordinates Network
- Pub Date:
- February 2023
- Bibcode:
- 2023GCN.33380....1L