Tag: #magnetar

IXPE observations strengthen evidence for vacuum birefringence around magnetar 1E 1547.0−5408

IXPE X-ray polarimetry, NICER and Parkes radio data show strong, phase-dependent polarization from magnetar 1E 1547.0−5408, supporting vacuum birefringence.

#ixpe, #magnetar, #vacuumbirefringence, #quantumelectrodynamics

Claim of 1.7-Second Periodicity in Repeating FRB 20201124A Sparks Debate

A revised arXiv preprint reports a ~1.7-second period in repeating FRB 20201124A suggesting a spinning magnetar; independent reanalysis disputes the claim.

#frb, #magnetar, #astronomy, #astrophysics

Fermi Detects Delayed Gamma Rays from Superluminous Supernova SN 2017egm, Supporting Magnetar Power Source

Fermi's LAT saw months-delayed GeV gamma rays from SN 2017egm, offering rare evidence the explosion was powered by a newborn magnetar.

#astronomy, #supernova, #gammarays, #magnetar