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73 papers
LSST and Keck characterization of outer Main Belt comet P/2026 N2
Bryce Bolin, Leo Alcorn, Max Brodheim +5
We characterize comet P/2026 N2, whose outer Main Belt orbit has au, , and , using optical observations, archival imaging, and dynamical integrations…
A Relationship Between Fast Radio Burst Dispersion Measure and Host Galaxy Inclination
Lachlan Marnoch, Stuart D. Ryder, Sunil Simha +9
It is commonly thought that fast radio bursts (FRBs) trace star formation, and that they are produced by magnetars. Both hypotheses imply that their sources are hosted primarily (b…
Pinpointing the cosmic web between massive galaxy clusters I. The incidence of HI and OVI as WHIM tracers
Karen Martínez-Acosta, Nicolas Tejos, Ismael Pessa +6
At redshift z<1, the CDM paradigm predicts that 40-50\% of baryons reside in the warm-hot intergalactic medium (WHIM) within cosmic web filaments. Characterizing the physi…
A spatially resolved view of Fast Radio Burst host metallicities with Integral-field Spectroscopy
Sunil Simha, Hsiao-Wen Chen, Wen-fai Fong +15
Magnetar sources are the leading theory for Fast Radio Burst (FRB) progenitors. If magnetars are indeed the dominant sources, we may thus expect any metallicity preference for magn…
Probing the Metallicity Dependence of Fast Radio Burst Progenitors with CHIME/FRB Outrigger Dwarf Host Galaxies
Y. Dong, W. Fong, K. Nimmo +24
Using the fast radio bursts (FRBs) localized with the CHIME/FRB Outriggers between February and October 2025, we conduct a systematic search for dwarf host galaxies. We identify an…
PIFFLE: Characterizing the Foreground Contributions from 4 Decades in Halo Mass to the FRB20230907D Dispersion Measure
Qi Guo, Khee-Gan Lee, Sunil Simha +10
We characterize the foreground environment of FRB20230907D, localized to a galaxy at , which has an observed dispersion measure of ${\rm DM}_{\rm obs}=1031~{\rm pc~cm^{-3}…