Publications (32)
Constraining the mass of the M31 ionized baryon Halo using CHIME/FRB Catalog 2
Lordrick A. Kahinga, J. Xavier Prochaska, Sunil Simha +21
The circumgalactic medium (CGM) surrounding galaxies is believed to be a significant reservoir of baryons, yet its total mass remains poorly constrained. We present a novel approac…
Magnetospheric origin of a fast radio burst constrained using scintillation
Kenzie Nimmo, Ziggy Pleunis, Paz Beniamini +26
Fast radio bursts (FRBs) are micro-to-millisecond duration radio transients that originate mostly from extragalactic distances. The emission mechanism responsible for these high lu…
A sudden period of high activity from repeating Fast Radio Burst 20201124A
Adam E. Lanman, Bridget C. Andersen, Pragya Chawla +30
The repeating FRB 20201124A was first discovered by CHIME/FRB in November of 2020, after which it was seen to repeat a few times over several months. It entered a period of high ac…
A spatial filter for mitigating radio interference and its application to CHIME/FRB Outriggers
Shion Andrew, Juan Mena-Parra, Haochen Wang +16
The sensitivity of radio telescopes is becoming increasingly limited by the presence of radio frequency interference (RFI), which will worsen as the radio spectrum becomes more cro…
A fast radio burst localized at detection to an edge-on galaxy using very-long-baseline interferometry
Tomas Cassanelli, Calvin Leung, Pranav Sanghavi +48
Fast radio bursts (FRBs) are millisecond-duration, luminous radio transients of extragalactic origin. These events have been used to trace the baryonic structure of the Universe us…
A Spatial Gap in the Sky Distribution of Fast Radio Burst Detections Coinciding with Galactic Plasma Overdensities
Swarali Shivraj Patil, Robert A. Main, Emmanuel Fonseca +26
We analyze the positional and morphological properties of about 3600 unique fast radio burst (FRB) sources reported in the second FRB catalog generated by the Canadian Hydrogen Int…
A VLBI Calibrator Grid at 600MHz for Fast Radio Transient Localizations with CHIME/FRB Outriggers
Shion Andrew, Calvin Leung, Alexander Li +15
The Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) Project has a new VLBI Outrigger at the Green Bank Observatory (GBO), which forms a 3300km baseline…
Mitigating Internal Instrument Coupling II: A Method Demonstration with the Hydrogen Epoch of Reionization Array
Nicholas S. Kern, Aaron R. Parsons, Joshua S. Dillon +63
We present a study of internal reflection and cross coupling systematics in Phase I of the Hydrogen Epoch of Reionization Array (HERA). In a companion paper, we outlined the mathem…
Probing the maximum energy of fast radio bursts using thousands of sources from the Second CHIME/FRB Catalog
Vishwangi Shah, Jason W. T. Hessels, Victoria M. Kaspi +25
Quantifying the maximum energy of fast radio bursts (FRBs) can provide stringent constraints on their emission mechanisms and progenitor models. However, the most energetic bursts…
Quantifying EoR delay spectrum contamination from diffuse radio emission
Adam E. Lanman, Jonathan C. Pober, Nicholas S. Kern +3
The 21 cm hyperfine transition of neutral hydrogen offers a promising probe of the large scale structure of the universe before and during the Epoch of Reionization, when the first…
Measurement of the Dispersion$\unicode{x2013}$Galaxy Cross-Power Spectrum with the Second CHIME/FRB Catalog
Haochen Wang, Kiyoshi Masui, Shion Andrew +18
The dispersion of extragalactic fast radio bursts (FRBs) can serve as a powerful probe of the diffuse plasma between and surrounding galaxies, which contains most of the Universe's…
The Second CHIME/FRB Catalog of Fast Radio Bursts
FRB Collaboration, Thomas Abbott, Bridget C. Andersen +71
We present a catalog of 4539 fast radio bursts (FRBs) observed with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope between 25 July 2018 and 15 September 2023.…
Constraining Gas Mass Fractions in Galaxy Groups and Clusters with the First CHIME/FRB Outrigger
Adam E. Lanman, Sunil Simha, Kiyoshi W. Masui +16
In recent years, localized fast radio bursts (FRBs) have emerged as a powerful tool to study the structure of the baryonic matter in the universe. Their dispersion measures (DMs) s…
Stellar Mass-Dispersion Measure Correlations Constrain Baryonic Feedback in Fast Radio Burst Host Galaxies
Calvin Leung, Sunil Simha, Isabel Medlock +20
Low redshift fast radio bursts (FRBs) provide robust measurements of the host-galaxy contribution to the dispersion measure (DM), which can constrain the circumgalactic medium (CGM…
Fundamental uncertainty levels of 21cm power spectra from a delay analysis
Adam E. Lanman, Jonathan C. Pober
Several experimental efforts are underway to measure the power spectrum of 21cm fluctuations from the Epoch of Reionization (EoR) using low-frequency radio interferometers. Experim…
A VLBI Software Correlator for Fast Radio Transients
Calvin Leung, Shion Andrew, Kiyoshi W. Masui +13
One major goal in fast radio burst science is to detect fast radio bursts (FRBs) over a wide field of view without sacrificing the angular resolution required to pinpoint them to t…
Updating the first CHIME/FRB catalog of fast radio bursts with baseband data
FRB Collaboration, Mandana Amiri, Bridget C. Andersen +57
In 2021, a catalog of 536 fast radio bursts (FRBs) detected with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) radio telescope was released by the CHIME/FRB Collaborat…
CHIME/FRB Outriggers: KKO Station System and Commissioning Results
Adam E. Lanman, Shion Andrew, Mattias Lazda +43
Localizing fast radio bursts (FRBs) to their host galaxies is an essential step to better understanding their origins and using them as cosmic probes. The CHIME/FRB Outrigger progr…
Validation Solutions to the Full-Sky Radio Interferometry Measurement Equation for Diffuse Emission
Adam E. Lanman, Steven G. Murray, Daniel C. Jacobs
Low-frequency radio observatories are reaching unprecedented levels of sensitivity in an effort to detect the 21 cm signal from the Cosmic Dawn. High precision is needed because th…
FRB 20250316A: A Brilliant and Nearby One-Off Fast Radio Burst Localized to 13 parsec Precision
FRB Collaboration, Thomas C. Abbott, Daniel Amouyal +83
Precise localizations of a small number of repeating fast radio bursts (FRBs) using very long baseline interferometry (VLBI) have enabled multiwavelength follow-up observations rev…
A Catalog of Local Universe Fast Radio Bursts from CHIME/FRB and the KKO Outrigger
FRB Collaboration, Mandana Amiri, Daniel Amouyal +62
We present the first catalog of fast radio burst (FRB) host galaxies from CHIME/FRB Outriggers, selected uniformly in the radio and the optical by localizing 81 new bursts to 2'' x…
CHIME/FRB Outriggers: Design Overview
FRB Collaboration, Mandana Amiri, Bridget C. Andersen +66
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) has emerged as the world's premier facility for studying fast radio bursts (FRBs) through its fast transient search backe…
An FRB Sent Me a DM: Constraining the Electron Column of the Milky Way Halo with Fast Radio Burst Dispersion Measures from CHIME/FRB
Amanda M. Cook, Mohit Bhardwaj, B. M. Gaensler +25
The CHIME/FRB project has detected hundreds of fast radio bursts (FRBs), providing an unparalleled population to probe statistically the foreground media that they illuminate. One…
Do All Fast Radio Bursts Repeat? Constraints from CHIME/FRB Far Side-Lobe FRBs
Hsiu-Hsien Lin, Paul Scholz, Cherry Ng +46
We report ten fast radio bursts (FRBs) detected in the far side-lobe region (i.e., off-meridian) of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) from 2…
Constraining Primordial Black Holes using Fast Radio Burst Gravitational-Lens Interferometry with CHIME/FRB
Calvin Leung, Zarif Kader, Kiyoshi W. Masui +30
Fast radio bursts (FRBs) represent an exciting frontier in the study of gravitational lensing, due to their brightness, extragalactic nature, and the compact, coherent characterist…
Localizing FRBs through VLBI with the Algonquin Radio Observatory 10-m Telescope
Tomas Cassanelli, Calvin Leung, Mubdi Rahman +38
The CHIME/FRB experiment has detected thousands of Fast Radio Bursts (FRBs) due to its sensitivity and wide field of view; however, its low angular resolution prevents it from loca…
The CHIME/FRB Discovery of the Extremely Active Fast Radio Burst Source FRB 20240114A
Kaitlyn Shin, Alice Curtin, Maxwell Fine +28
Among the thousands of observed fast radio bursts (FRBs), a few sources exhibit exceptionally high burst activity observable by many telescopes across a broad range of radio freque…
Host Galaxies for Four Nearby CHIME/FRB Sources and the Local Universe FRB Host Galaxy Population
Mohit Bhardwaj, Daniele Michilli, Aida Yu. Kirichenko +24
We present the host galaxies of four apparently non-repeating fast radio bursts (FRBs), FRBs 20181223C, 20190418A, 20191220A, and 20190425A, reported in the first Canadian Hydrogen…
CHIME/FRB Discovery of 25 Repeating Fast Radio Burst Sources
FRB Collaboration, Bridget C. Andersen, Kevin Bandura +56
We present the discovery of 25 new repeating fast radio burst (FRB) sources found among CHIME/FRB events detected between 2019 September 30 and 2021 May 1. The sources were found u…
A High-Time Resolution Search for Compact Objects using Fast Radio Burst Gravitational Lens Interferometry with CHIME/FRB
Zarif Kader, Calvin Leung, Matt Dobbs +31
The gravitational field of compact objects, such as primordial black holes, can create multiple images of background sources. For transients such as fast radio bursts (FRBs), these…
Investigating the sightline of a highly scattered FRB through a filamentary structure in the local Universe
Kaitlyn Shin, Calvin Leung, Sunil Simha +31
Fast radio bursts (FRBs) are unique probes of extragalactic ionized baryonic structure as each signal, through its burst properties, holds information about the ionized matter it e…
Mitigating Internal Instrument Coupling for 21 cm Cosmology I: Temporal and Spectral Modeling in Simulations
Nicholas S. Kern, Aaron R. Parsons, Joshua S. Dillon +3
We study the behavior of internal signal chain reflections and antenna cross coupling as systematics for 21 cm cosmological surveys. We outline the mathematics for how these system…