A5035759604- Astro and Planetary Science
- Planetary Science and Exploration
- Stellar, planetary, and galactic studies
- Isotope Analysis in Ecology
- Gamma-ray bursts and supernovae
- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Pulsars and Gravitational Waves Research
- Astrophysical Phenomena and Observations
- Solar and Space Plasma Dynamics
- Exercise and Physiological Responses
- Muscle metabolism and nutrition
- Geophysics and Gravity Measurements
- Clinical Nutrition and Gastroenterology
- Earthquake Detection and Analysis
- Spacecraft Design and Technology
- Veterinary Medicine and Surgery
- Radiative Heat Transfer Studies
- Carcinogens and Genotoxicity Assessment
- High Altitude and Hypoxia
- Distributed and Parallel Computing Systems
- Digestive system and related health
- Veterinary Oncology Research
- Space Exploration and Technology
- Organ Transplantation Techniques and Outcomes
International Centre for Radio Astronomy Research
2023-2024
Curtin University
2014-2024
Technology Centre Prague
2021
University of Veterinary Science
1992
The discovery of the first electromagnetic counterpart to a gravitational wave signal has generated follow-up observations by over 50 facilities world-wide, ushering in new era multi-messenger astronomy. In this paper, we present event GW170817 and its SSS17a/DLT17ck (IAU label AT2017gfo) 14 Australian telescopes partner observatories as part Australian-based Australian-led research programs. We report early- late-time multi-wavelength observations, including optical imaging spectroscopy,...
Direct links between carbonaceous chondrites and their parent bodies in the solar system are rare. The Winchcombe meteorite is most accurately recorded chondrite fall. Its pre-atmospheric orbit cosmic-ray exposure age confirm that it arrived on Earth shortly after ejection from a primitive asteroid. Recovered only hours falling, composition of largely unmodified by terrestrial environment. It contains abundant hydrated silicates formed during fluid-rock reactions, carbon- nitrogen-bearing...
The Earth is impacted by 35–40 metre-scale objects every year. These meteoroids are the low-mass end of impactors that can do damage on ground. Despite this they very poorly surveyed and characterized, too infrequent for ground-based fireball observation efforts, small to be efficiently detected NEO telescopic surveys whilst still in interplanetary space. We want evaluate suitability different instruments characterizing where come from. use data collected over first 3 yr operation...
Abstract On February 28, 2021, a fireball dropped ∼0.6 kg of recovered CM2 carbonaceous chondrite meteorites in South‐West England near the town Winchcombe. We reconstruct fireball's atmospheric trajectory, light curve, fragmentation behavior, and pre‐atmospheric orbit from optical records contributed by five networks. The progenitor meteoroid was three orders magnitude less massive (∼13 kg) than any previously observed fall. Winchcombe meteorite survived entry because it exposed to very low...
Abstract As fireball networks grow, the number of events observed becomes unfeasible to manage by manual efforts. Reducing and analyzing big data requires automated pipelines. Triangulation a trajectory can swiftly provide information on positions and, with timing information, velocities. However, extending this pipeline determine terminal mass estimate meteoroid is complex next step. Established methods typically require assumptions be made physical characteristics (such as shape bulk...
We describe the fall of Dingle Dell (L/LL 5) meteorite near Morawa in Western Australia on October 31, 2016. The fireball was observed by six observatories Desert Fireball Network (DFN), a continental scale facility optimised to recover meteorites and calculate their pre-entry orbits. $30\,\mbox{cm}$ meteoroid entered at 15.44 $\mbox{km s}^{-1}$, followed moderately steep trajectory $51^{\circ}$ horizon from 81 km down 19 altitude, where luminous flight ended speed 3.2 s}^{-1}$. Deceleration...
Abstract On June 19, 2020 at 20:05:07 UTC, a fireball lasting was observed above Western Australia by three Desert Fireball Network observatories. The meteoroid entered the atmosphere with speed of km and followed ° slope trajectory from height 75 down to 18.6 km. Despite poor angle triangulated planes between observatories (29°) large distance observatories, well‐constrained kilo‐size main mass predicted have fallen just south Madura in Australia. However, search area be due uncertainties....
Abstract On June 1, 2019, just before 7:30 p.m. local time, the Desert Fireball Network (DFN) detected a −9.3 magnitude fireball over South Australia near Western border. The event was observed by six observatories, and lasted for 5 s. One station nearly directly underneath trajectory, greatly constraining trajectory solution. This trajectory's backward numerical integrations indicate that object originated from outer main belt with semimajor axis of 2.75 au. A light curve also extracted...
Abstract For centuries extremely long grazing fireball displays have fascinated observers and inspired people to ponder about their origins. The Desert Fireball Network is the largest single network in world, covering one third of Australian skies. This expansive size has enabled us capture a majority atmospheric trajectory spectacular event that lasted over 90 s, penetrated as deep ∼58.5 km, traveled 1300 km through atmosphere before exiting back into interplanetary space. Based on our...
Abstract Fireball networks are used to recover meteorites, with the context of orbits. Observations from these cover bright flight, where meteoroid is luminescent, but a fallen meteorite, observations must often be predicted forward in time ground estimate an impact position. This dark-flight modeling deceptively simple, there hidden complexity covering precise interactions between meteorite and (usually active) atmosphere. We describe method approach by Desert Network, detailing issues we...
Abstract The Golden (British Columbia, Canada) meteorite fall occurred on October 4, 2021 at 0534 UT with the first recovered fragment (1.3 kg) landing an occupied bed. associated fireball was recorded by numerous cameras permitting reconstruction of its trajectory and orbit. entered atmosphere a 54° angle from horizontal speed 18 km s −1 . reached peak brightness −14, having become luminous height >84 ending altitude. Analysis infrasonic record bolide produced estimated mass kg while...
We report the first-time recovery of a fresh meteorite fall using drone and machine learning algorithm. A fireball on 1st April 2021 was observed over Western Australia by Desert Fireball Network, for which area calculated predicted surviving mass. search team arrived site surveyed 5.1 km2 4-day period. convolutional neural network, trained previously-recovered meteorites with fusion crusts, processed images our field computer after each flight. candidates identified algorithm were sorted...
Abstract Over the Nullarbor Plain in South Australia, Desert Fireball Network detected a fireball on night of June 1, 2019 (7:30 pm local time), and 6 weeks later recovered single meteorite (42 g) named Arpu Kuilpu. This was then distributed to consortium collaborating institutions be measured analyzed by number methodologies including SEM‐EDS, EPMA, ICP‐MS, gamma‐ray spectrometry, ideal gas pycnometry, magnetic susceptibility measurement, μCT, optical microscopy, accelerator noble mass...
ABSTRACT Thermonuclear (type-I) bursts exhibit properties that depend both on the local surface conditions of neutron stars which they ignite, as well physical parameters host binary system. However, constraining system requires a comprehensive method to compare observed simulations. We have further developed beansp code for this purpose and analysed from IGR J17498$-$2921, 401-Hz accretion-powered pulsar, discovered during it’s 2011 outburst. find good agreement with model having...
Abstract On 2020 December 5 at 17:28 UTC, the Japan Aerospace Exploration Agency’s Hayabusa-2 sample return capsule came back to Earth. It re-entered atmosphere over South Australia, visible for 53 seconds as a fireball from near Northern Territory border toward Woomera where it landed in military test range. A scientific observation campaign was planned observe optical, seismo-acoustic, radio, and high energy particle phenomena associated with entry of an interplanetary object....
The detection of fireballs streaks in astronomical imagery can be carried out by a variety methods. Desert Fireball Network--DFN--uses network cameras to track and triangulate incoming recover meteorites with orbits. is done on-camera, but due the design constraints imposed remote deployment, are limited processing power time. We describe software used for fireball under these constrained circumstances. A cascading approach was implemented, whereby computationally simple filters discard...
Abstract Jupiter-family comets (JFCs) contribute a significant amount of debris to near-Earth space. However, telescopic observations these objects seem suggest that they have short physical lifetimes. If this is true, the material generated will also be short-lived, but fireball observation networks still detect on cometary orbits. This study examines centimeter-to-meter-scale sporadic meteoroids detected by Desert Fireball Network from 2014 2020 originating JFC-like Analyzing each event’s...
Abstract Objects gravitationally captured by the Earth–Moon system are commonly called temporarily orbiters (TCOs), natural Earth satellites, or minimoons. TCOs a crucially important subpopulation of near-Earth objects (NEOs) to understand because they easiest targets for future sample-return, redirection, asteroid mining missions. Only one TCO has ever been observed telescopically, 2006 RH 120 , and it orbited about 11 months. Additionally, only fireball prior this study. We present our...
Abstract The Desert Fireball Network observed a significant outburst of fireballs belonging to the Southern Taurid Complex meteor showers between 2015 October 27 and November 17. At same time, Cameras for Allsky Meteor Surveillance project detected distinct population smaller meteors irregular IAU shower #628, s-Taurids. While this returning was predicted in previous work, reason stream is not yet understood. first year that precisely observed, providing an opportunity better understand its...
We present a novel methodology for recovering meteorite falls observed and constrained by fireball networks, using drones machine learning algorithms. This approach uses images of the local terrain given fall site to train an artificial neural network, designed detect candidates. have field tested our show detection rate between 75-97%, while also providing efficient mechanism eliminate false-positives. Our tests at number locations within Western Australia showcase ability this training...
Based on telescopic observations of Jupiter-family comets (JFCs), there is predicted to be a paucity objects at sub-kilometre sizes. However, several bright fireballs and some meteorites have been tenuously linked the JFC population, showing metre-scale do exist in this region. In 2017, Desert Fireball Network (DFN) observed grazing fireball that redirected meteoroid from an Apollo-type orbit JFC-like orbit. Using orbital data collected by DFN, study, we generated artificial dataset close...