GCN Circular 40650
Subject
EP-WXT trigger 01709178244: confirmation of a stellar flare by BOOTES-5 & BOOTES-7
Date
2025-06-08T09:27:31Z (2 days ago)
From
I. Perez-Garcia at Institute of Astrophysics of Andalusia <ipg@iaa.es>
Via
Web form
I. Perez-Garcia, S.-Y. Wu, A. J. Castro-Tirado, E. J. Fernandez-Garcia, M.D. Caballero-Garcia, S. Guziy, G. Garcia-Segura, R. Sanchez-Ramirez (IAA-CSIC), Y.-D. Hu (INAF-OAB), C. Perez del Pulgar, A. Castellon, I. Carrasco (Univ. de Malaga), L. Hernandez-Garcia (Univ. de Valparaiso), M. Gritsevich (Univ. of Helsinki), S. Jeong (ADD, Daejeon), D. Hiriart (IA-UNAM, Ensenada), W. H. Lee (UNAM, Mexico DF), D.-R. Xiong (Yunnan Observatories of CAS), B.-B. Zhang (Nanjing Univ.) and A. Maury (Space, San Pedro de Atacama), on behalf of a larger collaboration, report:
Following the detection of trigger 01709178244 by EP-WXT (Hu et al. GCN 40649), both the 0.6m robotic telescopes BOOTES-5/JGU robotic telescope at San Pedro Martir Observatory (Mexico) and BOOTES-7 at San Pedro de Atacama (Chile) responded to the alert on June 8, 5:00 UT (i.e. 1 min after notification and 6.5 min after the detection). Within the reported EP-FXT error circle we find the star Gaia DR3 6730332160799599744 decreasing 1.2 mag in brightness (g filter) and 0.8 mag (r filter) during a 120 min time interval, confirming the EP X-ray trigger due to a stellar flare.
We thank the staff at San Pedro de Atacama Celestial Observations and San Pedro Martir Observatory for their excellent support.