March marches on, and your editors are ready for spring. Here is our post-equinox round-up of the FRB news and papers from the ArXiv this month. Enjoy!

Observational Results

• A steadily declining dispersion measure for the repeating fast radio burst FRB 20220529A: Evidence for an FRB engine embedded in an expanding supernova remnant; Pandhi et al., arXiv: 2602.22309
• Flux Variations of Fast Radio Bursts and Their Persistent Radio Sources: Evidence for a Shared Progenitor; Li et al., arXiv: 2603.07123
• Discovery of Bimodal Drift Rate Structure in FRB 20240114A: Evidence for Dual Emission Regions; Arron, arXiv: 2603.18109
• A systematic search for physical associations between fast radio bursts and astrophysical transients; Chen et al., arXiv: 2603.18487
• FAST Polarization Catalog of FRB 20240114A; Wang et al., arXiv: 2603.20663
• Constraints on the Physical Association between ICECAT1 Neutrinos and Fast Radio Bursts Using the Second CHIME/FRB Catalogue; Masaoka et al., arXiv: 2603.24983

Theory and Modeling

• Tight bounds on the Maxwell-Carroll-Field-Jackiw parameters using Fast Radio Bursts; Ribeiro et al., arXiv: 2602.22996
• Constraining the mass of the M31 ionized baryon Halo using CHIME/FRB Catalog 2; Kahinga et al., arXiv: 2602.23749
• FRB scattering statistics through the CGM are sensitive to morphology and intermittency; Jow & Leung, arXiv: 2603.00336
• Probing the Dispersion and Rotation Measure Contributions from Supernova Remnants in Fast Radio Burst Source Environments with 1D SNR Simulation; Zhang et al., arXiv: 2603.07012
• Linear Mode Conversion in Ultramagnetized Pair Plasmas: Single-Parameter Scaling; Dai et al., arXiv: 2603.10226
• Constraints on Axion-Photon Mixing from Fast Radio Burst Dispersion Measures; Muthusami & Kashyap, arXiv: 2603.11657
• Gravitational self-lensing of Fast Radio Bursts in neutron star magnetospheres: II. Applications to strong repeaters and the CHIME population; La Placa et al., arXiv: 2603.12386
• The influence of plasma lensing magnification to the luminosity function of fast radio bursts; Er et al., arXiv: 2603.12691
• Scatter in the Relation between Persistent Radio Source Luminosity and Fast Radio Burst Rotation Measure: A Window into Circum-burst Environments; Yang, arXiv: 2603.17615
• Probing the Cosmic Web with Fast Radio Bursts. I. Scattering; Lapiner et al., arXiv: 2603.22108
• Probing the Bias of Large-Scale Structure with Unlocalized Fast Radio Bursts; Su & Li, arXiv: 2603.22832
• The Persistent Radio Sources and Multi-wavelength Counterparts of Fast Radio Bursts in Massive Binary Systems; Zhao et al., arXiv: 2603.23144

Algorithms, Instrumentation, and Data Access

• Trial dispersion measure spacing in fast radio burst searches with HEIMDALL; Keane & McKenna, arXiv: 2602.22753
• Fast Radio Bursts in the Era of the Vera C. Rubin Observatory's Legacy Survey of Space and Time; James et al., arXiv: 2603.00371
• A signal dedispersion algorithm for imaging-based transient searches; Pietrantonio et al., arXiv: 2603.02931
• Long-Integration Magnetar Burst Observatory (LIMBO): Instrument Summary and Early FRB Rate Constraints; McCauley et al., arXiv: 2603.05603
• SwinYNet: A Transformer-based Multi-Task Model for Accurate and Efficient FRB Search; Chen et al., arXiv: 2603.05958
• A GPU-Accelerated Transient Detection Pipeline for DECam Time-Domain Surveys; Hu et al., arXiv: 2603.08593
• Tied-array beam flatfielding; Kuiper et al., arXiv: 2603.12970
• A Commensal Radio-Only Cosmic Ray Detector at the Owens Valley Radio Observatory Long Wavelength Array; Plant et al., arXiv: 2603.13205
• Optimising the FRB Search Pipeline for the Northern Cross Radio Telescope; Camilleri et al., arXiv: 2603.16345
• A spatial filter for mitigating radio interference and its application to CHIME/FRB Outriggers; Andrew et al., arXiv: 2603.25833

Magnetars and other relevant results

• Giant radio pulses in the magnetar XTE J1810-197 detected with the IAR's telescopes; Furlan et al., arXiv: 2603.00295
• The UTR-2 decametre pulsar and transient survey I. Transient detection; Zakharenko et al., arXiv: 2603.01182
• Illuminating the dark universe in the multi-messenger era; Brax et al., arXiv: 2603.03446
• Discovery of a 36-minute long-period transient ASKAP J142431.2-612611; Pritchard et al., arXiv: 2603.07857
• Double White Dwarf Mergers as Progenitors of Long-Period Transients; Malheiro et al., arXiv: 2603.08416
• Novae breves from magnetar giant flares: Potential probes of neutron star crusts; Zhong et al., arXiv: 2603.10500
• Magnetar counterparts, kinematics and birth sites with HST and JWST; Chrimes et al., arXiv: 2603.15750
• Transient narrowband radio bursts from 1E 1547.0-5408; Lower et al., arXiv: 2603.21450
• SGR 1935+2154's Quiet Local Environment: Clues for Its Progenitor; He et al., arXiv: 2603.22720

• The potentially hyperactive repeating fast radio burst source, FRB 20251229A (see our 2026 January Newsletter), has been localized with the CHIME Outriggers at GBO and KKO with a position uncertainty ellipse of 0.07 arcsec by 20 arcsec (ATel 17709). The most probable candidate host galaxy (association probability ~0.7–0.8) is at a photometric redshift z = 0.08.
• The field of FRB20251229A was observed with the uGMRT at 600 MHz, and steady-state radio emission is reported (64 microJy/beam, 5 sigma) from the candidate host galaxy (ATel 17723). Follow-up observations would be needed to assess compactness on VLBI scales.
• An apparent correlation is claimed between the burst rate observed for FRB 20240114A with FAST at 1.4 GHz, and the flux density of the associated persistent radio source observed with the VLA (ATel 17711).

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