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GRB 210619B: Mini-MegaTORTORA early optical observationsстатья
- Авторы: Karpov S., Beskin G., Lyapsina N., Ivanov E., Katkova E., Perkov A., Biryukov A., Sasyuk V.
- Журнал: GRB Coordinates Network, Circular Service
- Том: 30308
- Год издания: 2021
- Первая страница: 1
- Аннотация: Mini-MegaTORTORA nine-channel wide-field monitoring system with high temporal resolution responded to the BAT trigger and observed the position of GRB 210619B (D'Avanzo et al., GCN 30261) since 2021-06-20 00:00:20 UT (T+55 s, during the ongoing gamma-ray emission) and until 2021-06-20 00:10:28 UT (T + 663 s). The system simultaneously acquired series of frames with 1 s exposures, 5 s exposures and 30 s exposures in white light, 10 s exposures in B filter, and 10 s exposures in V filter. The transient was clearly detectable in all acquired sequences except B filter ones. Overall behaviour of the early light curve is consistent with the smooth decay reported by Jelinek et al. (GCN 30263), with no large-amplitude variability apparent in high temporal resolution data. Mini-MegaTORTORA belongs to Kazan Federal University and is located at Special Astrophysical Observatory near Russian 6-m telescope.
- Добавил в систему: Бирюков Антон Владимирович