FRB 20240114A shows a ~112-day periodic modulation in central emission frequency with systematic upward drift within each period at >6σ significance.
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D., Ravi, V., Belov, K
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Relativistic single-particle scattering cross sections for strong electromagnetic waves in strongly magnetized plasma are computed for arbitrary polarization and angle, showing strong suppression and sub-unity optical depth for quasi-parallel propagation.
A 75–190 pc non-thermal radio source coincident with FRB 20220912A is identified as a compact star-forming region with Σ_SFR ≳ 13 M☉/yr/kpc², supporting a young-magnetar progenitor channel.
VLBI observations of TXS 0506+056 show a spine-sheath jet with aligned inner and perpendicular outer EVPAs plus a new superluminal component near the IceCube neutrino detection.
Two FRBs in the CHIME/FRB catalog look microlensed by black holes of roughly 550 and 2000 solar masses, presented as IMBH candidates.
A second coherent radio burst spanning 704-4032 MHz with spectral index -2.18, 54% linear and 22% circular polarization, and an orthogonal polarization angle jump was detected from 2XMM J104608.7-594306, showing rare radio activity in sources thought to be radio-quiet.
Fits of a magnetized plasma radiative-transfer model to bright magnetar bursts favor heavy nuclei (effective charge Z≈37) over light ions, suggesting neutron-star crust material enters the emitting fireball.
Using CHIME localization maps plus redshift and time constraints, no statistically significant FRB–GRB association survives.
Magnetic inclination alignment with timescale proportional to B to the minus two suppresses observed numbers of strong-field neutron stars, unifying pulsars and magnetars under one log-uniform initial B distribution.
A theoretical model in which monster radiative shocks launched by magnetar disturbances generate self-regulated GHz radio precursors that explain FRB activity from SGR 1935+2154 with sub-millisecond duration and specific energy scaling.
A 4200-hour campaign on FRB 20240114A finds that the highest-energy bursts account for most of the observed radio energy release, with a break in the energy distribution at ~2×10^40 erg and a linear DM rise of +0.96 pc cm^{-3} over 318 days.
CHIME/FRB has now cataloged 80 repeating FRB sources whose burst rates and upper limits are consistent with a power-law distribution implying 50-100% of all FRBs repeat.
Repeating FRBs show Gaussian-distributed intrinsic PAs with no periodicity, explained by stochastic magnetospheric axis wandering in an extended rotating vector model.
A search of repeating FRBs identifies RM flare candidates in FRB 20121102A, FRB 20201124A, and FRB 20180916B, suggesting such events may be common and tied to dynamic magneto-ionic environments.
A standardized RM-flare detection pipeline applied to 15 repeating FRBs finds only FRB 20220529A has a clear algorithmic flare; most others show secular or stochastic RM evolution.
Synchrotron cooling produces an energy-dependent loss cone and a cooled-loss-cone plasma distribution in neutron star outer magnetospheres, with losses localized at a few hundred to a thousand stellar radii.
CASM-256 is a new 256-antenna radio array at Owens Valley that uses real-time digital beamforming to search for fast radio bursts and galactic transients over a huge sky area.
Simulated GW–FRB associations show Cosmic Explorer can constrain cosmology and host DM without redshifts, while current LIGO-Virgo cannot.
An MCMC-based period search method recovers previously reported candidate periods in FRB 20201124A observations.
FRB 20240114A shows two epochs with distinct energy distribution indices and waiting time statistics, suggesting different burst types before and after March 21 2024.
MONSTER project proposes SKA-VLBI measurements of magnetar proper motions to examine the irregular-supernova dynamo origin hypothesis.
A 9-hour FAST observation covering ~4230 GCs in M49 found no FRBs and sets an upper limit of 4.7e-4 FRB GC^-1 hr^-1 above ~16.5 mJy ms fluence.
CHIME/FRB Catalog data favor a mixture of delayed progenitor channels for apparently nonrepeating FRBs with effective mean delay 1.426 Gyr over pure star-formation-rate tracing.
PATH is extended with three fitted P(m_r|z) prior models combined with P(z|DM), raising host-association confidence for ASKAP FRBs while showing fainter-than-expected host magnitude distribution.
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Spectral Evidence of Heavy Nuclei from the Neutron Star Crust in Magnetar Bursts
Fits of a magnetized plasma radiative-transfer model to bright magnetar bursts favor heavy nuclei (effective charge Z≈37) over light ions, suggesting neutron-star crust material enters the emitting fireball.