Publications (52)
A bright millisecond-duration radio burst from a Galactic magnetar
FRB Collaboration, B. C. Andersen, K. M. Bandura +68
Magnetars are highly magnetized young neutron stars that occasionally produce enormous bursts and flares of X-rays and gamma-rays. Of the approximately thirty magnetars currently k…
FRB 121102 Bursts Show Complex Time-Frequency Structure
J. W. T. Hessels, L. G. Spitler, A. D. Seymour +23
FRB 121102 is the only known repeating fast radio burst source. Here we analyze a wide-frequency-range (1-8 GHz) sample of high-signal-to-noise, coherently dedispersed bursts detec…
Burst timescales and luminosities link young pulsars and fast radio bursts
K. Nimmo, J. W. T. Hessels, F. Kirsten +45
Fast radio bursts (FRBs) are extragalactic radio flashes of unknown physical origin. Their high luminosities and short durations require extreme energy densities, like those found…
Rotation Measure Evolution of the Repeating Fast Radio Burst Source FRB 121102
G. H. Hilmarsson, D. Michilli, L. G. Spitler +10
The repeating fast radio burst source FRB 121102 has been shown to have an exceptionally high and variable Faraday rotation measure (RM), which must be imparted within its host gal…
Propagation effects at low frequencies seen in the LOFAR long-term monitoring of the periodically active FRB 20180916B
A. Gopinath, C. G. Bassa, Z. Pleunis +6
LOFAR (LOw Frequency ARray) has previously detected bursts from the periodically active, repeating fast radio burst (FRB) source FRB 20180916B down to unprecedentedly low radio fre…
LOFAR discovery of a 23.5-second radio pulsar
C. M. Tan, C. G. Bassa, S. Cooper +16
We present the discovery of PSR J0250+5854, a radio pulsar with a spin period of 23.5 s. This is the slowest-spinning radio pulsar known. PSR J0250+5854 was discovered by the LOFAR…
A LOFAR census of non-recycled pulsars: average profiles, dispersion measures, flux densities, and spectra
A. Bilous, V. Kondratiev, M. Kramer +24
We present first results from a LOFAR census of non-recycled pulsars. The census includes almost all such pulsars known (194 sources) at declinations and Galac…
CHIME/FRB Catalog 1 results: statistical cross-correlations with large-scale structure
Masoud Rafiei-Ravandi, Kendrick M. Smith, Dongzi Li +38
The CHIME/FRB Project has recently released its first catalog of fast radio bursts (FRBs), containing 492 unique sources. We present results from angular cross-correlations of CHIM…
A nearby repeating fast radio burst in the direction of M81
M. Bhardwaj, B. M. Gaensler, V. M. Kaspi +23
We report on the discovery of FRB 20200120E, a repeating fast radio burst (FRB) with low dispersion measure (DM), detected by the Canadian Hydrogen Intensity Mapping Experiment (CH…
A repeating fast radio burst source localised to a nearby spiral galaxy
B. Marcote, K. Nimmo, J. W. T. Hessels +51
Fast radio bursts (FRBs) are brief, bright, extragalactic radio flashes. Their physical origin remains unknown, but dozens of possible models have been postulated. Some FRB sources…
Low-frequency Faraday rotation measures towards pulsars using LOFAR: probing the 3-D Galactic halo magnetic field
C. Sobey, A. V. Bilous, J-M. GrieÃmeier +22
We determined Faraday rotation measures (RMs) towards 137 pulsars in the northern sky, using Low-Frequency Array (LOFAR) observations at 110-190 MHz. This low-frequency RM catalogu…
Highest-frequency detection of FRB 121102 at 4-8 GHz using the Breakthrough Listen Digital Backend at the Green Bank Telescope
V. Gajjar, A. P. V. Siemion, D. C. Price +28
We report the first detections of the repeating fast radio burst source FRB 121102 above 5.2 GHz. Observations were performed using the 48 GHz receiver of the Robert C. Byrd Gre…
The FRB 20121102A November rain in 2018 observed with the Arecibo Telescope
J. N. Jahns, L. G. Spitler, K. Nimmo +7
We present 849 new bursts from FRB 20121102A detected with the 305-m Arecibo Telescope. Observations were conducted as part of our regular campaign to monitor activity and evolutio…
Periodic activity from a fast radio burst source
FRB Collaboration, M. Amiri, B. C. Andersen +70
Fast radio bursts (FRBs) are bright, millisecond-duration radio transients originating from extragalactic distances. Their origin is unknown. Some FRB sources emit repeat bursts, r…
Low-frequency pulse profile variation in PSR B2217+47: evidence for echoes from the interstellar medium
D. Michilli, J. W. T. Hessels, J. Y. Donner +17
We have observed a complex and continuous change in the integrated pulse profile of PSR B2217+47, manifested as additional components trailing the main peak. These transient compon…
A repeating fast radio burst source in a globular cluster
F. Kirsten, B. Marcote, K. Nimmo +63
Fast radio bursts (FRBs) are exceptionally luminous flashes of unknown physical origin, reaching us from other galaxies (Petroff et al. 2019). Most FRBs have only ever been seen on…
No Evidence for Galactic Latitude Dependence of the Fast Radio Burst Sky Distribution
A. Josephy, P. Chawla, A. P. Curtin +23
We investigate whether the sky rate of Fast Radio Bursts depends on Galactic latitude using the first catalog of Fast Radio Bursts (FRBs) detected by the Canadian Hydrogen Intensit…
Revealing the Dynamic Magneto-ionic Environments of Repeating Fast Radio Burst Sources through Multi-year Polarimetric Monitoring with CHIME/FRB
R. Mckinven, B. M. Gaensler, D. Michilli +22
Fast radio bursts (FRBs) display a confounding variety of burst properties and host galaxy associations. Repeating FRBs offer insight into the FRB population by enabling spectral,…
A Multi-telescope Campaign on FRB 121102: Implications for the FRB Population
C. J. Law, M. W. Abruzzo, C. G. Bassa +33
We present results of the coordinated observing campaign that made the first subarcsecond localization of a Fast Radio Burst, FRB 121102. During this campaign, we made the first si…
The CHIME Pulsar Project: System Overview
Pulsar Collaboration, M. Amiri, K. M. Bandura +42
We present the design, implementation and performance of a digital backend constructed for the Canadian Hydrogen Intensity Mapping Experiment (CHIME) that uses accelerated computin…
Search for Gravitational Waves Associated with Fast Radio Bursts Detected by CHIME/FRB During the LIGO--Virgo Observing Run O3a
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1654
We search for gravitational-wave transients associated with fast radio bursts (FRBs) detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project (CHIME/…
The LOFAR Tied-Array All-Sky Survey (LOTAAS): Characterization of 20 pulsar discoveries and their single-pulse behavior
D. Michilli, C. Bassa, S. Cooper +11
We are using the LOw-Frequency ARray (LOFAR) to perform the LOFAR Tied-Array All-Sky (LOTAAS) survey for pulsars and fast transients. Here we present the astrometric and rotational…
Constraining very-high-energy and optical emission from FRB 121102 with the MAGIC telescopes
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +155
Fast radio bursts (FRBs) are bright flashes observed typically at GHz frequencies with millisecond duration, whose origin is likely extragalactic. Their nature remains mysterious,…
A sample of low energy bursts from FRB 121102
K. Gourdji, D. Michilli, L. G. Spitler +4
We present 41 bursts from the first repeating fast radio burst discovered (FRB 121102). A deep search has allowed us to probe unprecedentedly low burst energies during two consecut…
Polarization properties of 28 repeating fast radio burst sources with CHIME/FRB
C. Ng, A. Pandhi, R. Mckinven +21
As part of the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) project, we report 41 new Rotation Measures (RMs) from 20 repeating Fast Radio Bursts (FR…
Evidence of intra-binary shock emission from the redback pulsar PSR J1048+2339
A. Miraval Zanon, P. D'Avanzo, A. Ridolfi +16
We present simultaneous multiwavelength observations of the 4.66 ms redback pulsar PSR J1048+2339. We performed phase-resolved spectroscopy with the Very Large Telescope (VLT) sear…
A repeating fast radio burst source in the outskirts of a quiescent galaxy
V. Shah, K. Shin, C. Leung +46
We report the discovery of the repeating fast radio burst source FRB 20240209A using the CHIME/FRB telescope. We have detected 22 bursts from this repeater between February and Jul…
A Large Scale Magneto-ionic Fluctuation in the Local Environment of Periodic Fast Radio Burst Source, FRB 20180916B
R. Mckinven, B. M. Gaensler, D. Michilli +23
Fast radio burst (FRB) source 20180916B exhibits a 16.33-day periodicity in its burst activity. It is as of yet unclear what proposed mechanism produces the activity, but polarizat…
The LOFAR Tied-Array All-Sky Survey: Timing of 21 pulsars including the first binary pulsar discovered with LOFAR
C. M. Tan, C. G. Bassa, S. Cooper +18
We report on the multi-frequency timing observations of 21 pulsars discovered in the LOFAR Tied-Array All-Sky Survey (LOTAAS). The timing data were taken at central frequencies of…
CHIME/FRB Detection of the Original Repeating Fast Radio Burst Source FRB 121102
A. Josephy, P. Chawla, E. Fonseca +41
We report the detection of a single burst from the first-discovered repeating Fast Radio Burst source, FRB 121102, with CHIME/FRB, which operates in the frequency band 400-800 MHz.…
A Local Universe Host for the Repeating Fast Radio Burst FRB 20181030A
M. Bhardwaj, A. Yu. Kirichenko, D. Michilli +16
We report on the host association of FRB 20181030A, a repeating fast radio burst (FRB) with a low dispersion measure (DM, 103.5 pc cm) discovered by CHIME/FRB Collaboration…
The LOFAR Tied-Array All-Sky Survey: Timing of 35 radio pulsars and an overview of the properties of the LOFAR pulsar discoveries
E. van der Wateren, C. G. Bassa, S. Cooper +20
The LOFAR Tied-Array All-Sky Survey (LOTAAS) is the most sensitive untargeted radio pulsar survey performed at low radio frequencies (119--151\,MHz) to date and has discovered 76 n…
An analysis pipeline for CHIME/FRB full-array baseband data
D. Michilli, K. W. Masui, R. Mckinven +21
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) has become a leading facility for detecting fast radio bursts (FRBs) through the CHIME/FRB backend. CHIME/FRB searches fo…
The Northern Cross Fast Radio Burst project - II. Monitoring of repeating FRB 20180916B, 20181030A, 20200120E and 20201124A
M. Trudu, M. Pilia, G. Bernardi +22
In this work we report the results of a nineteen-month Fast Radio Burst observational campaign carried out with the North-South arm of the Medicina Northern Cross radio telescope a…
LOFAR Detection of 110-188 MHz Emission and Frequency-Dependent Activity from FRB 20180916B
Z. Pleunis, D. Michilli, C. G. Bassa +32
FRB 20180916B is a well-studied repeating fast radio burst source. Its proximity (~150 Mpc), along with detailed studies of the bursts, have revealed many clues about its nature --…
Detection of Repeating FRB 180916.J0158+65 Down to Frequencies of 300 MHz
P. Chawla, B. C. Andersen, M. Bhardwaj +37
We report on the detection of seven bursts from the periodically active, repeating fast radio burst (FRB) source FRB 180916.J0158+65 in the 300-400-MHz frequency range with the Gre…
First detection of frequency-dependent, time-variable dispersion measures
J. Y. Donner, J. P. W. Verbiest, C. Tiburzi +11
Context. High-precision pulsar-timing experiments are affected by temporal variations of the Dispersion Measure (DM), which are related to spatial variations in the interstellar el…
Searching for Historical Extragalactic Optical Transients Associated with Fast Radio Bursts
Y. Dong, C. D. Kilpatrick, W. Fong +24
We present a systematic search for past supernovae (SNe) and other historical optical transients at the positions of fast radio burst (FRB) sources to test FRB progenitor systems.…
Sub-second periodicity in a fast radio burst
FRB Collaboration, Bridget C. Andersen, Kevin Bandura +59
Fast radio bursts (FRBs) are millisecond-duration flashes of radio waves that are visible at distances of billions of light-years. The nature of their progenitors and their emissio…
Modeling Fast Radio Burst Dispersion and Scattering Properties in the First CHIME/FRB Catalog
P. Chawla, V. M. Kaspi, S. M. Ransom +28
We present a Monte Carlo-based population synthesis study of fast radio burst (FRB) dispersion and scattering focusing on the first catalog of sources detected with the Canadian Hy…
Simultaneous X-ray and Radio Observations of the Repeating Fast Radio Burst FRB 180916.J0158+65
P. Scholz, A. Cook, M. Cruces +35
We report on simultaneous radio and X-ray observations of the repeating fast radio burst source FRB 180916.J0158+65 using the Canadian Hydrogen Intensity Mapping Experiment (CHIME)…
The Discovery of Nulling and Mode Switching Pulsars with CHIME/Pulsar
C. Ng, B. Wu, M. Ma +18
The Pulsar backend of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) has monitored hundreds of known pulsars in the northern sky since Fall 2018, providing a rich data…
Simultaneous X-ray, gamma-ray, and Radio Observations of the repeating Fast Radio Burst FRB 121102
P. Scholz, S. Bogdanov, J. W. T. Hessels +19
We undertook coordinated campaigns with the Green Bank, Effelsberg, and Arecibo radio telescopes during Chandra X-ray Observatory and XMM-Newton observations of the repeating fast…
Statistical association between the candidate repeating FRB 20200320A and a galaxy group
Masoud Rafiei-Ravandi, Kendrick M. Smith, D. Michilli +17
We present results from angular cross-correlations between select samples of CHIME/FRB repeaters and galaxies in three photometric galaxy surveys, which have shown correlations wit…
An extreme magneto-ionic environment associated with the fast radio burst source FRB 121102
D. Michilli, A. Seymour, J. W. T. Hessels +31
Fast radio bursts (FRBs) are millisecond-duration, extragalactic radio flashes of unknown physical origin. FRB 121102, the only known repeating FRB source, has been localized to a…
A Second Source of Repeating Fast Radio Bursts
FRB Collaboration, M. Amiri, K. Bandura +57
The discovery of a repeating Fast Radio Burst (FRB) source, FRB 121102, eliminated models involving cataclysmic events for this source. No other repeating FRB has yet been detected…
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…
Arecibo observations of a burst storm from FRB 20121102A in 2016
D. M. Hewitt, M. P. Snelders, J. W. T. Hessels +9
FRB 20121102A is the first known fast radio burst (FRB) from which repeat bursts were detected, and one of the best-studied FRB sources in the literature. Here we report on the ana…
CHIME/FRB Detection of Eight New Repeating Fast Radio Burst Sources
FRB Collaboration, B. C. Andersen, K. Bandura +54
We report on the discovery of eight repeating fast radio burst (FRB) sources found using the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope. These sources span a…
Nine New Repeating Fast Radio Burst Sources from CHIME/FRB
E. Fonseca, B. C. Andersen, M. Bhardwaj +38
We report on the discovery and analysis of bursts from nine new repeating fast radio burst (FRB) sources found using the Canadian Hydrogen Intensity Mapping Experiment (CHIME) tele…
The LOFAR Tied-Array All-Sky Survey (LOTAAS): Survey overview and initial pulsar discoveries
S. Sanidas, S. Cooper, C. G. Bassa +20
We present an overview of the LOFAR Tied-Array All-Sky Survey (LOTAAS) for radio pulsars and fast transients. The survey uses the high-band antennas of the LOFAR Superterp, the den…
Single-pulse classifier for the LOFAR Tied-Array All-sky Survey
D. Michilli, J. W. T. Hessels, R. J. Lyon +7
Searches for millisecond-duration, dispersed single pulses have become a standard tool used during radio pulsar surveys in the last decade. They have enabled the discovery of two n…