Search for gravitational-wave transients associated with magnetar bursts in Advanced LIGO and Advanced Virgo data from the third observing run

Understand

Gravitational waves are expected to be produced from neutron star oscillations associated with magnetar giant flares and short bursts.

• We present the results of a search for short-duration (milliseconds to seconds) and long-duration ($\sim$ 100 s) transient gravitational waves from 13 magnetar short bursts observed during Advanced LIGO, Advanced Virgo and KAGRA's third observation run.
• These 13 bursts come from two magnetars, SGR 1935$+$2154 and Swift J1818.0$-$1607.
• We also include three other electromagnetic burst events detected by Fermi GBM which were identified as likely coming from one or more magnetars, but they have no association with a known magnetar.