GRB 240502A: VZLUSAT-2 detection
Abstract
The long-duration GRB 240502A (Fermi/GBM detection: GCN 36368; INTEGRAL/IBIS detection: GCN 36369) was detected by the GRB detector on board of the VZLUSAT-2 3U CubeSat (https://www.vzlusat2.cz/en/). The data acquisition was performed by the GRB detector unit no. 1. The detection was confirmed at the peak time 2024-05-02 05:28:34 UTC. The T90 duration is 9 s and the significance during T90 reaches 5.9 sigma. The light curve obtained by VZLUSAT-2 is available here: https://vzlusat2.konkoly.hu/static/share/GRB240502A_GCN_VZLUSAT2.pdf We note that the light curve measured by VZLUSAT-2 is shifted by approximately 5 s with respect to light curves obtained by other missions. The cause of the on-board clock slip is being fixed. All VZLUSAT-2 detections are listed at: https://monoceros.physics.muni.cz/hea/VZLUSAT-2/. The GRB detectors on VZLUSAT-2 are a demonstration payload for a future CubeSat constellation (Werner et al. Proc. SPIE 2018). Two GRB modules of VZLUSAT-2 are placed in a perpendicular manner and each consists of a 75 x 75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy range from ~30 keV to ~1000 keV. VZLUSAT-2 was launched on 2022 January 13 from Cape Canaveral.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- May 2024
- Bibcode:
- 2024GCN.36519....1P