Jane Kaczmarek
A5013887042- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- GNSS positioning and interference
- Galaxies: Formation, Evolution, Phenomena
- Geophysics and Gravity Measurements
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Superconducting Materials and Applications
- Cosmology and Gravitation Theories
- Statistical and numerical algorithms
- Magnetic confinement fusion research
- earthquake and tectonic studies
- Astrophysics and Star Formation Studies
- Geophysics and Sensor Technology
- Astronomical Observations and Instrumentation
- Particle Detector Development and Performance
- Superconducting and THz Device Technology
- Molecular Spectroscopy and Structure
- Geomagnetism and Paleomagnetism Studies
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Advanced Frequency and Time Standards
Commonwealth Scientific and Industrial Research Organisation
2018-2025
Astronomy and Space
2018-2024
National Research Council Canada
2020-2024
Herzberg Institute of Astrophysics
2020-2024
Dominion Astrophysical Observatory
2021-2024
University of British Columbia
2023-2024
Okanagan University College
2023-2024
Australia Telescope National Facility
2018-2023
Vitenparken
2020
Guizhou Normal University
2020
We present a catalog of 536 fast radio bursts (FRBs) detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) Project between 400 and 800 MHz from 2018 July 25 to 2019 1, including 62 18 previously reported repeating sources. The represents first large sample, repeaters non-repeaters, observed in single survey with uniform selection effects. This facilitates comparative absolute studies FRB population. show that apparent non-repeaters have sky locations...
We report on the discovery of FRB 20200120E, a repeating fast radio burst (FRB) with low dispersion measure (DM), detected by Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB project. The source DM 87.82 pc cm$^{-3}$ is lowest recorded from an to date, yet significantly higher than maximum expected Milky Way interstellar medium in this direction (~ 50 cm$^{-3}$). have three bursts and one candidate over period 2020 January-November. baseband voltage data for event January 20...
Abstract We present a synthesis of fast radio burst (FRB) morphology (the change in flux as function time and frequency) detected the 400–800 MHz octave by FRB project on Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB), using events from first CHIME/FRB catalog. The catalog consists 62 bursts 18 repeating sources, plus 474 one-off FRBs, between 2018 July 25 2019 2. identify four observed archetypes (“simple broadband,” “simple narrowband,” “temporally complex,” “downward...
Aims. This work provides an update to existing reconstructions of the Galactic Faraday rotation sky by processing almost all data sets available at end year 2020. Observations extra-Galactic sources in recent years have further illuminated previously underconstrained southern celestial sky, as well parts inner disc Milky Way, along with other regions. has culminated all-sky set 55 190 points, thereby comprising a significant expansion on 41 330 used previous works. At same time, this novelty...
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 were using a clustering algorithm that looks for multiple co-located on sky having similar dispersion measures (DMs). repeaters have DMs ranging from $\sim$220 pc cm$^{-3}$ to $\sim$1700 cm$^{-3}$, include exhibited as few two bursts many twelve. report statistically significant difference in both DM extragalactic (eDM) distributions...
Abstract Fast radio bursts (FRBs) are brief, energetic, typically extragalactic flashes of emission whose progenitors largely unknown. Although studying the FRB population is essential for understanding how these astrophysical phenomena occur, such studies have been difficult to conduct without large numbers FRBs and characterizable observational biases. Using recently released catalog 536 published by Canadian Hydrogen Intensity Mapping Experiment/Fast Radio Burst (CHIME/FRB) collaboration,...
ABSTRACT The International Pulsar Timing Array 2nd data release is the combination of sets from worldwide collaborations. In this study, we search for continuous waves: gravitational wave signals produced by individual supermassive black hole binaries in local universe. We consider on circular orbits and neglect evolution orbital frequency over observational span. find no evidence such set sky averaged 95 per cent upper limits their amplitude h95. most sensitive 10 nHz with h95 = 9.1 ×...
Abstract We present the host galaxies of four apparently nonrepeating fast radio bursts (FRBs), FRB 20181223C, 20190418A, 20191220A, and 20190425A, reported in first Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB) catalog. Our selection these FRBs is based on a planned hypothesis testing framework where we search all CHIME/FRB Catalog-1 events that have low extragalactic dispersion measure (<100 pc cm −3 ), with high Galactic latitude (∣ b ∣ > 10°) saved baseband data....
Abstract We present a search for host galaxy associations the third set of repeating fast radio burst (FRB) sources discovered by CHIME/FRB Collaboration. Using ∼1′ baseband localizations and probabilistic methods, we identify potential galaxies two FRBs, 20200223B 20190110C at redshifts 0.06024(2) 0.12244(6), respectively. also discuss properties marginal candidate association FRB 20191106C with redshift 0.10775(1). The three putative are all relatively massive, fall on standard...
Abstract In 2021, a catalog of 536 fast radio bursts (FRBs) detected with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope was released by CHIME/FRB Collaboration. This large collection bursts, observed single instrument and uniform selection effects, has advanced our understanding FRB population. Here we update results for 140 these FRBs which channelized raw voltage (“baseband”) data are available. With voltages measured telescope’s antennas, it is possible to maximize...
Abstract We report the discovery of repeating fast radio burst (FRB) source FRB 20240209A using Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB telescope. detected 22 bursts from this repeater between 2024 February and July, 6 which were also recorded at Outrigger station k’niʔatn k’l ⌣ stk’masqt (KKO). The multiple very long baseline interferometry localizations 66 km CHIME–KKO baseline, each with a different vector orientation due to repeater’s high decl. ∼86°, enabled combined...
Abstract We describe 14 yr of public data from the Parkes Pulsar Timing Array (PPTA), an ongoing project that is producing precise measurements pulse times arrival 26 millisecond pulsars using 64-m radio telescope with a cadence approximately 3 weeks in three observing bands. A comprehensive description pulsar systems employed at since 2004 provided, including calibration methodology and analysis stability system components. attempt to provide full accounting reduction raw measured Stokes...
The fast radio burst (FRB) population is observationally divided into sources that have been observed to repeat and those not. There tentative evidence the bursts from repeating different properties than non-repeating ones. In order determine occurrence rate of characterize nature emission, we conducting sensitive searches for repetitions detected with Australian Square Kilometre Array Pathfinder (ASKAP) 64-m Parkes telescope, using recently commissioned Ultra-wideband Low (UWL) receiver...
Abstract The repeating FRB 20201124A was first discovered by CHIME/FRB in November of 2020, after which it seen to repeat a few times over several months. It entered period high activity April 2021, at time observatories recorded tens hundreds more bursts from the source. These follow-up observations enabled precise localization and host-galaxy identification. In this paper, we report on CHIME/FRB-detected 20201124A, including their best-fit morphologies, fluences, arrival times. large...
Abstract We present a Monte Carlo–based population synthesis study of fast radio burst (FRB) dispersion and scattering focusing on the first catalog sources detected with Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) project. simulate intrinsic properties propagation effects for variety FRB models compare simulated distributions measures timescales corresponding from CHIME/FRB catalog. Our simulations confirm results previous studies, which suggested that...
Abstract The CHIME/FRB project has detected hundreds of fast radio bursts (FRBs), providing an unparalleled population to statistically probe the foreground media that they illuminate. One such medium is ionized halo Milky Way (MW). We estimate total Galactic electron column density from FRB dispersion measures (DMs) as a function latitude using four different estimators, including ones assume spherical symmetry MW and imply more latitudinal variation in density. Our observation-based...
We report on improved sky localizations of thirteen repeating fast radio bursts (FRBs) discovered by CHIME/FRB via the use interferometric techniques channelized voltages from telescope. These so-called 'baseband localizations' improve localization uncertainty area presented in past studies more than three orders magnitude. The regions are provided for full sample FRBs to enable follow-up studies. uncertainties, together with limits source distances their dispersion measures (DMs), allow us...
Abstract Localizing fast radio bursts (FRBs) to their host galaxies is an essential step better understanding origins and using them as cosmic probes. The Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB Outriggers program aims add very long baseline interferometry localization capabilities CHIME, such that FRBs may be localized tens of milliarcsecond precision at the time discovery, more than sufficient for galaxy identification. first-built outrigger telescope Outrigger (KKO),...
Abstract The Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) Project has a new very long baseline interferometry (VLBI) Outrigger at the Green Bank Observatory (GBO), which forms 3300 km with CHIME operating 400–800 MHz. Using 100 ms full-array baseband “snapshots” collected commensally during FRB and pulsar triggers, we perform shallow, wide-area VLBI survey covering significant fraction of northern sky targeted positions compact sources from Fundamental Catalog....
We describe an ultra-wide-bandwidth, low-frequency receiver ("UWL") recently installed on the Parkes radio telescope. The system provides continuous frequency coverage from 704 to 4032 MHz. For much of band (~60%) temperature is approximately 22K and remains in a linear regime even presence strong mobile phone transmissions. discuss scientific technical aspects new including its astronomical objectives, as well feed, receiver, digitiser signal-processor design. pipeline routines that form...
The precise origins of fast radio bursts (FRBs) remain unknown. Multiwavelength observations nearby FRB sources can provide important insights into the enigmatic phenomenon. Here we present results from a sensitive, broadband X-ray and observational campaign 20200120E, closest known extragalactic repeating source (located 3.63 Mpc away in an ~10-Gyr-old globular cluster). We place deep limits on persistent prompt emission which use to constrain possible for source. compare our with various...
We present near-infrared light curves of supernova (SN) 2011fe in M101, including 34 epochs H band starting 14 days before maximum brightness the B band. The curve data were obtained with WIYN High-Resolution Infrared Camera. When are calibrated using templates other Type Ia SNe, we derive an apparent H-band magnitude at epoch B-band 10.85 ± 0.04. This implies a distance modulus for M101 that ranges from 28.86 to 29.17 mag, depending on which absolute calibration SNe is used.