GCN Circular 39805
Subject
EP250321a: BOOTES-5/JGT optical afterglow detection
Date
2025-03-21T08:52:33Z (5 days ago)
Edited On
2025-03-21T17:43:29Z (5 days ago)
From
ipg@iaa.es
Edited By
Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of I. Perez-Garcia at Institute of Astrophysics of Andalusia <ipg@iaa.es>
Via
Web form
I. Perez-Garcia, E. J. Fernandez-Garcia, G. Garcia-Segura, M. D. Caballero-Garcia, S.-Y. Wu, R. Sanchez-Ramirez, S. Guziy and A. J. Castro-Tirado (IAA-CSIC, Granada), M. Gritsevich (Univ. of Helsinki), C. Perez del Pulgar, A. Castellon (Univ. de Malaga), Y.-D. Hu (INAF-OAB, Brera), S. Jeong (ADD, Daejeon) and D. Hiriart and W. H. Lee (UNAM), on behalf of a larger collaboration, report:
Following the detection of EP250321a by Einstein Probe (Hu et al. GCNC 39800), the BOOTES-5/JG robotic telescope at Observatorio Astronomico Nacional in San Pedro Martir (Mexico) automatically responded to this X-ray transient starting on 2025-03-21 07:27:36 UT (23 min after notification). Series of images in clear filter were gathered and we detect and uncatalogud source at RA, Dec = 11:57:03.0, +17:21:46.2 (179.26263, 17.36283) within the WXT region, for which we measure a magnitude of 19.6 +- 0.1, consistent with Fu et al. (GCNC 39804). Further analysis of the additional images is ongoing.
We thank the staff at Observatorio Astronomico Nacional in San Pedro Martir for their excellent support.