Monitoring the magnetar SGR 1935+2154 with the MAGIC telescopes

Discussion timeslot (ZOOM-Meeting): 14. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/98542982538
ZOOM-Meeting ID: 98542982538
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/47-The-central-engines-of-fast-transients-Gamma-Ray-Bursts-and-Fast-Radio-Bursts-GAD-GAI-MM/112
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-04/5

Abstract:
'The Galactic magnetar SGR 1935+2154 was associated with a bright, millisecond-timescale fast radio burst (FRB) which occurred in April 2020, during a flaring episode. This was the first time an FRB was unequivocally associated with a Galactic source, and the first FRB for which the nature of the emitting source was identified. Moreover, it was the first FRB with a counterpart at another wavelength correlated in time, an atypical, hard X-ray burst, which provides clear evidence for accompanying non-thermal processes. The MAGIC Telescopes are Imaging Air Cherenkov Telescopes (IACTs) sensitive to very-high-energy (VHE, E larger 100 GeV) gamma rays. Located at the center of the camera lies the MAGIC Central pixel, a single fully modified photosensor-to-readout chain to measure millisecond-duration optical signals, displaying a maximum sensitivity at a wavelength of 350 nm. This allows MAGIC to operate simultaneously both as VHE gamma-ray and a fast optical telescope. The MAGIC telescopes have monitored SGR 1935+2154 in a multiwavelength campaign involving X-ray, radio and optical facilities. In this contribution, we will show the results on the search for the VHE counterpart of the first SGR-FRB source in this multiwavelength context, as well as the search for fast optical bursts with the MAGIC Central Pixel.'

Authors: Alicia López-Oramas | John Hoang | Tarek Hassan | Susumu Inoue | for the MAGIC collaboration
Co-Authors: Filippo Ambrosino | Alice Borghese | Francesco Coti Zelati | Jason Hessels | Benito Marcote | Alessandro Papitto | Mark Snelders
Collaboration: MAGIC

Indico-ID: 223
Proceeding URL: https://pos.sissa.it/395/783