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GCN Circular 36130

EP 240414a: BOOTES-4/MET Optical Upper Limits
2024-04-16T06:23:58Z (2 months ago)
Dingrong Xiong at Yunnan Observatories of CAS, China <>
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D. R. Xiong, J. M. Bai, J. R. Mao, Y. F. Fan, K. Ye, C. J. Wang, Y. X. Xin, B. L. Lun, J. J. Zhang, X. H. Zhao, L. Xu, K. X. Lu, X. Ding, D. Q. Wang (Yunnan Observatories), A. J. Castro-Tirado, E. Fernandez-Garcia, Y. D. Hu (IAA-CSIC) and C. J. Perez del Pulgar (UMA) on behalf of the BOOTES team report:

We observed the X-ray transient with R.A. = 191.498 deg, DEC = -9.695 deg, and did not found any optical counterpart within an uncertainty of 3 arcmin in radius compared to the PanSTARRS DR1 image. The upper limits of magnitudes (without being corrected for Galactic extinction) are given as follows. 

Tmid-T0 (day) | UT (start) | Upper Limit (error) | Exposure Time | Filter 


0.23 | 24-04-14 15:24:00 | 17.446 (0.06) | 60*20s | Clear 


The Burst Optical Observer and Transient Exploring System (BOOTES, is a completed world-wide network of robotic telescopes led at IAA-CSIC (Spain) which aims at following-up transients and other astrophysical sources in the sky for which the first station was installed in 1998 (Castro-Tirado et al. 1999). The fourth station of the BOOTES Network, BOOTES-4/MET, is located at the Lijiang Observatory of the Yunnan Observatories of China (Xiong et al. 2020). See also Hu et al. (2021). We acknowledge the support of BOOTES-4 technical staffs. 
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