Welcome to the solstice edition of the FRB Newsletter. The Localization of FRBs in Taiwan meeting is underway, and we have registration and abstract submission information for FRB 2024 in November in Thailand. We also have our usual round up of FRB and related papers, including a couple on mysterious ultra-long period objects and a potentially interesting (controversial?) position paper on the use of machine learning in the physical sciences. Enjoy!

Observational Results

• Revisiting Energy Distribution and Formation Rate of CHIME Fast Radio Bursts; Zhang et al., arXiv: 2406.00476
• Comprehensive analysis of the Apertif Fast Radio Burst sample: similarities with young, energetic neutron stars; Pastor-Marazuela et al., arXiv: 2406.00482
• Time delay of fast radio burst population with respect to the star formation history; Lin et al., arXiv: 2406.03809
• Magnetospheric origin of a fast radio burst constrained using scintillation; Nimmo et al., arXiv: 2406.11053
• A search for the fine-structure constant evolution from fast radio bursts and type Ia supernovae data; Lemos et al., arXiv: 2406.11691
• Scintillation velocity and arc observations of FRB 20201124A; Wu et al., arXiv: 2406.12218
• Varying activity and the bursts properties of FRB 20240114A probed with GMRT down to 300 MHz; Kumar et al., arXiv: 2406.12804
• The Curious Case of Twin Fast Radio Bursts: Evidence for Neutron Star Origin?; Bera et al., arXiv: 2406.13704

Theory and Modeling

• The Origins of Narrow Spectra of Fast Radio Bursts; Kumar et al., arXiv: 2406.01266
• Objects May Be Closer Than They Appear: Significant Host Galaxy Dispersion Measures of Fast Radio Bursts in Zoom-in Simulations; Orr et al., arXiv: 2406.03523
• The formation rate and luminosity function of fast radio bursts; Chen et al., arXiv: 2406.03672

Algorithms, Instrumentation, and Data Access

• Managing the Growing Complexity of Multi-Messenger Transient Events with Astro-COLIBRI; Schussler et al., arXiv: 2406.01817
• The role of magnetar transient activity in time-domain and multimessenger astronomy; Negro et al., arXiv: 2406.04967
• The FRB-searching pipeline of the Tianlai Cylinder Pathfinder Array; Yu et al., arXiv: 2406.15740
• Constraining the selection corrected luminosity function and total pulse count for radio transients; Dong et al., arXiv: 2406.04597

Magnetars and other relevant results

• Is machine learning good or bad for the natural sciences?; Hogg & Villar, arXiv: 2405.18095

  "In many of the sciences, discovery of new or previously unknown phenomena or objects can be of great importance. A recent example in astronomy is the discovery of fast radio bursts..."

• An emission-state-switching radio transient with a 54-minute period; Caleb et al., Nature Astronomy DOI: 10.1038/s41550-024-02277-w
• Beyond the Rotational Deathline: Radio Emission from Ultra-long Period Magnetars; Cooper & Wadiasingh; arXiv: 2406.04135
• VLBA Astrometry of the Fastest-spinning Magnetar Swift J1818.0-1607: A Large Trigonometric Distance & A Small Transverse Velocity; Ding et al., arXiv: 2406.04674
• Implications for Galactic Electron Density Structure from Pulsar Sightlines Intersecting HII Regions; Ocker et al., arXiv: 2406.07664
• Cosmic slowing down of acceleration with the Chaplygin-Jacobi gas as a dark fluid; Fortunato et al., arXiv: 2406.13132
• A two-minute burst of highly polarised radio emission originating from low Galactic latitude; Dobie et al., arXiv: 2406.12352

• The highly active repeating source FRB 20240114A (see the previous Newsletter) was observed by Swift XRT and UVOT (ATel 16645), with simultaneous multi-frequency observations from the ground. Upper limits are reported for X-ray or UV bands, and specifically, no X-ray emission was detected within 10 ms intervals surrounding 7 radio bursts found at Effelsberg.
• The CHIME/FRB collaboration reported the discovery of another repeating source, FRB 20240209A (ATel 16670), that appears to be in a heightened activity phase. The likely host galaxy has a photometric redshift z~0.13. Note the high Declination (+86 deg) of the source.

• Registration and abstract submission is now open for the FRB 2024 conference in Thailand 4-8 November 2024. Early bird registration closes 30 July 2024, and abstract submission closes 30 August 2024.

Do you have an item for future newsletters? Please send these via email to the editors (Shami and Kenzie) to be included in an upcoming issue.