ORCID Profile
0000-0001-9157-4349
Current Organisations
Analysis and Experimentation on Ecosystems (AnaEE)
,
CNRS
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Signal Processing | Astronomical and Space Sciences | Astronomy And Astrophysics | Image Processing | Adaptive Agents and Intelligent Robotics | Signal Processing | Simulation And Modelling | Simulation and Modelling | Control Systems, Robotics and Automation | Artificial Intelligence and Image Processing | Electrical and Electronic Engineering | General Relativity and Gravitational Waves | Particle Physics | Optical Physics Not Elsewhere Classified | Cosmology and Extragalactic Astronomy |
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Physical Sciences | Teaching and Instruction Technologies | Application Software Packages (excl. Computer Games) | Higher education | Physical sciences | Scientific instrumentation
Related Links
Publications
Towards an optimal search strategy of optical and gravitational wave emissions from binary neutron star coalescence
Publisher: Oxford University Press (OUP)
Date: 06-06-2011
A Study of GRBs with Low-luminosity Afterglows
Publisher: American Astronomical Society
Date: 22-11-2017
GRB 110205A: ANATOMY OF A LONG GAMMA-RAY BURST
Publisher: American Astronomical Society
Date: 06-03-2012
Search for Subsolar Mass Ultracompact Binaries in Advanced LIGO’s Second Observing Run
Publisher: American Physical Society (APS)
Date: 18-10-2019
Challenging the Forward Shock Model with the 80 Ms Follow up of the X-ray Afterglow of Gamma-Ray Burst 130427A
Publisher: MDPI AG
Date: 16-01-2017
GW190425: Observation of a Compact Binary Coalescence with Total Mass ∼ 3.4 M⊙
Publisher: American Astronomical Society
Date: 19-03-2020
Abstract: On 2019 April 25, the LIGO Livingston detector observed a compact binary coalescence with signal-to-noise ratio 12.9. The Virgo detector was also taking data that did not contribute to detection due to a low signal-to-noise ratio, but were used for subsequent parameter estimation. The 90% credible intervals for the component masses range from to ( – if we restrict the dimensionless component spin magnitudes to be smaller than 0.05). These mass parameters are consistent with the in idual binary components being neutron stars. However, both the source-frame chirp mass and the total mass of this system are significantly larger than those of any other known binary neutron star (BNS) system. The possibility that one or both binary components of the system are black holes cannot be ruled out from gravitational-wave data. We discuss possible origins of the system based on its inconsistency with the known Galactic BNS population. Under the assumption that the signal was produced by a BNS coalescence, the local rate of neutron star mergers is updated to 250–2810 .
Search for the isotropic stochastic background using data from Advanced LIGO’s second observing run
Publisher: American Physical Society (APS)
Date: 04-09-2019
Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
Publisher: American Astronomical Society
Date: 16-10-2017
Search for intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network
Publisher: American Physical Society (APS)
Date: 30-09-2019
The origin of the prompt optical emission in GRB 060111B
Publisher: Elsevier BV
Date: 04-2011
X-ray afterglow light curves: toward a standard candle?
Publisher: AIP
Date: 2008
DOI: 10.1063/1.2943553
THE ULTRA-LONG GRB 111209A. II. PROMPT TO AFTERGLOW AND AFTERGLOW PROPERTIES
Publisher: American Astronomical Society
Date: 26-11-2013
The Zadko Telescope: A Southern Hemisphere Telescope for Optical Transient Searches, Multi-Messenger Astronomy and Education
Publisher: Cambridge University Press (CUP)
Date: 2010
DOI: 10.1071/AS09078
Abstract: The new 1 m f/4 fast-slew Zadko Telescope was installed in June 2008 about 70 km north of Perth, Western Australia. It is the only metre-class optical facility at this southern latitude between the east coast of Australia and South Africa, and can rapidly image optical transients at a longitude not monitored by other similar facilities. We report on first imaging tests of a pilot program of minor planet searches, and Target of Opportunity observations triggered by the Swift satellite. In 12 months, 6 gamma-ray burst afterglows were detected, with estimated magnitudes two of them, GRB 090205 ( z = 4.65) and GRB 090516 ( z = 4.11), are among the most distant optical transients imaged by an Australian telescope. Many asteroids were observed in a systematic 3-month search. In September 2009, an automatic telescope control system was installed, which will be used to link the facility to a global robotic telescope network future targets will include fast optical transients triggered by high-energy satellites, radio transient detections, and LIGO gravitational wave candidate events. We also outline the importance of the facility as a potential tool for education, training, and public outreach.
Search for Eccentric Binary Black Hole Mergers with Advanced LIGO and Advanced Virgo during Their First and Second Observing Runs
Publisher: American Astronomical Society
Date: 30-09-2019
Abstract: When formed through dynamical interactions, stellar-mass binary black holes (BBHs) may retain eccentric orbits ( e 0.1 at 10 Hz) detectable by ground-based gravitational-wave detectors. Eccentricity can therefore be used to differentiate dynamically formed binaries from isolated BBH mergers. Current template-based gravitational-wave searches do not use waveform models associated with eccentric orbits, rendering the search less efficient for eccentric binary systems. Here we present the results of a search for BBH mergers that inspiral in eccentric orbits using data from the first and second observing runs (O1 and O2) of Advanced LIGO and Advanced Virgo. We carried out the search with the coherent WaveBurst algorithm, which uses minimal assumptions on the signal morphology and does not rely on binary waveform templates. We show that it is sensitive to binary mergers with a detection range that is weakly dependent on eccentricity for all bound systems. Our search did not identify any new binary merger candidates. We interpret these results in light of eccentric binary formation models. We rule out formation channels with rates ≳100 Gpc −3 yr −1 for e 0.1, assuming a black hole mass spectrum with a power-law index ≲2.
The detection efficiency of on-axis short gamma-ray burst optical afterglows triggered by aLIGO/Virgo
Publisher: Oxford University Press (OUP)
Date: 30-10-2014
Binary Black Hole Population Properties Inferred from the First and Second Observing Runs of Advanced LIGO and Advanced Virgo
Publisher: American Astronomical Society
Date: 11-09-2019
The first six months of the Advanced LIGO’s and Advanced Virgo’s third observing run with GRANDMA
Publisher: Oxford University Press (OUP)
Date: 11-11-2019
Abstract: We present the Global Rapid Advanced Network Devoted to the Multi-messenger Addicts (GRANDMA). The network consists of 21 telescopes with both photometric and spectroscopic facilities. They are connected together thanks to a dedicated infrastructure. The network aims at coordinating the observations of large sky position estimates of transient events to enhance their follow-up and reduce the delay between the initial detection and optical confirmation. The GRANDMA programme mainly focuses on follow-up of gravitational-wave alerts to find and characterize the electromagnetic counterpart during the third observational c aign of the Advanced LIGO and Advanced Virgo detectors. But it allows for follow-up of any transient alerts involving neutrinos or gamma-ray bursts, even those with poor spatial localization. We present the different facilities, tools, and methods we developed for this network and show its efficiency using observations of LIGO/Virgo S190425z, a binary neutron star merger candidate. We furthermore report on all GRANDMA follow-up observations performed during the first six months of the LIGO–Virgo observational c aign, and we derive constraints on the kilonova properties assuming that the events’ locations were imaged by our telescopes.
GRANDMA and HXMT Observations of GRB 221009A: The Standard Luminosity Afterglow of a Hyperluminous Gamma-Ray Burst—In Gedenken an David Alexander Kann
Publisher: American Astronomical Society
Date: 05-2023
Abstract: Object GRB 221009A is the brightest gamma-ray burst (GRB) detected in more than 50 yr of study. In this paper, we present observations in the X-ray and optical domains obtained by the GRANDMA Collaboration and the Insight Collaboration. We study the optical afterglow with empirical fitting using the GRANDMA+HXMT-LE data sets augmented with data from the literature up to 60 days. We then model numerically using a Bayesian approach, and we find that the GRB afterglow, extinguished by a large dust column, is most likely behind a combination of a large Milky Way dust column and moderate low-metallicity dust in the host galaxy. Using the GRANDMA+HXMT-LE+XRT data set, we find that the simplest model, where the observed afterglow is produced by synchrotron radiation at the forward external shock during the deceleration of a top-hat relativistic jet by a uniform medium, fits the multiwavelength observations only moderately well, with a tension between the observed temporal and spectral evolution. This tension is confirmed when using the augmented data set. We find that the consideration of a jet structure (Gaussian or power law), the inclusion of synchrotron self-Compton emission, or the presence of an underlying supernova do not improve the predictions. Placed in the global context of GRB optical afterglows, we find that the afterglow of GRB 221009A is luminous but not extraordinarily so, highlighting that some aspects of this GRB do not deviate from the global known s le despite its extreme energetics and the peculiar afterglow evolution.
The basic physics of the binary black hole merger GW150914
Publisher: Wiley
Date: 04-10-2016
A Correlated Optical and Gamma Emission from GRB 081126A
Publisher: AIP
Date: 2010
DOI: 10.1063/1.3509296
Simultaneous event detection rates by electromagnetic and gravitational wave detectors in the advanced era of LIGO and Virgo
Publisher: Oxford University Press (OUP)
Date: 13-11-2013
Continuous optical monitoring during the prompt emission of GRB 060111B
Publisher: EDP Sciences
Date: 10-05-2019
X-ray flashes or soft gamma-ray bursts?
Publisher: EDP Sciences
Date: 09-10-2006
ARE ULTRA-LONG GAMMA-RAY BURSTS DIFFERENT?
Publisher: American Astronomical Society
Date: 04-02-2015
First Search for Gravitational Waves from Known Pulsars with Advanced LIGO
Publisher: American Astronomical Society
Date: 07-04-2017
Gamma-ray burst afterglows: luminosity clustering at infrared wavelengths?
Publisher: EDP Sciences
Date: 30-10-2008
Optical and X-ray early follow-up of ANTARES neutrino alerts
Publisher: IOP Publishing
Date: 24-02-2016
Detection of a Very Bright Optical Flare from the Gamma-Ray Burst GRB 050904 at Redshift 6.29
Publisher: American Astronomical Society
Date: 03-02-2006
DOI: 10.1086/501048
Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger
Publisher: Springer Science and Business Media LLC
Date: 16-10-2017
DOI: 10.1038/NATURE24298
Abstract: The merger of two neutron stars is predicted to give rise to three major detectable phenomena: a short burst of γ-rays, a gravitational-wave signal, and a transient optical-near-infrared source powered by the synthesis of large amounts of very heavy elements via rapid neutron capture (the r-process). Such transients, named 'macronovae' or 'kilonovae', are believed to be centres of production of rare elements such as gold and platinum. The most compelling evidence so far for a kilonova was a very faint near-infrared rebrightening in the afterglow of a short γ-ray burst at redshift z = 0.356, although findings indicating bluer events have been reported. Here we report the spectral identification and describe the physical properties of a bright kilonova associated with the gravitational-wave source GW170817 and γ-ray burst GRB 170817A associated with a galaxy at a distance of 40 megaparsecs from Earth. Using a series of spectra from ground-based observatories covering the wavelength range from the ultraviolet to the near-infrared, we find that the kilonova is characterized by rapidly expanding ejecta with spectral features similar to those predicted by current models. The ejecta is optically thick early on, with a velocity of about 0.2 times light speed, and reaches a radius of about 50 astronomical units in only 1.5 days. As the ejecta expands, broad absorption-like lines appear on the spectral continuum, indicating atomic species produced by nucleosynthesis that occurs in the post-merger fast-moving dynamical ejecta and in two slower (0.05 times light speed) wind regions. Comparison with spectral models suggests that the merger ejected 0.03 to 0.05 solar masses of material, including high-opacity lanthanides.
A robotic telescope network for space debris identification and tracking
Publisher: Elsevier BV
Date: 02-2011
Effects of waveform model systematics on the interpretation of GW150914
Publisher: IOP Publishing
Date: 12-04-2017
The 80 Ms follow-up of the X-ray afterglow of GRB 130427A challenges the standard forward shock model
Publisher: Oxford University Press (OUP)
Date: 15-07-2016
Model comparison from LIGO–Virgo data on GW170817’s binary components and consequences for the merger remnant
Publisher: IOP Publishing
Date: 16-01-2020
Abstract: GW170817 is the very first observation of gravitational waves originating from the coalescence of two compact objects in the mass range of neutron stars, accompanied by electromagnetic counterparts, and offers an opportunity to directly probe the internal structure of neutron stars. We perform Bayesian model selection on a wide range of theoretical predictions for the neutron star equation of state. For the binary neutron star hypothesis, we find that we cannot rule out the majority of theoretical models considered. In addition, the gravitational-wave data alone does not rule out the possibility that one or both objects were low-mass black holes. We discuss the possible outcomes in the case of a binary neutron star merger, finding that all scenarios from prompt collapse to long-lived or even stable remnants are possible. For long-lived remnants, we place an upper limit of 1.9 kHz on the rotation rate. If a black hole was formed any time after merger and the coalescing stars were slowly rotating, then the maximum baryonic mass of non-rotating neutron stars is at most , and three equations of state considered here can be ruled out. We obtain a tighter limit of for the case that the merger results in a hypermassive neutron star.
Erratum: “Searches for Gravitational Waves from Known Pulsars at Two Harmonics in 2015–2017 LIGO Data” (2019, ApJ, 879, 10)
Publisher: American Astronomical Society
Date: 04-09-2019
The true redshift distribution of Pre-SWIFT gamma-ray bursts
Publisher: AIP
Date: 2006
DOI: 10.1063/1.2207954
GRB 141221A: gone is the wind
Publisher: Oxford University Press (OUP)
Date: 10-03-2016
DOI: 10.1093/MNRAS/STW537
Capturing the electromagnetic counterparts of binary neutron star mergers through low-latency gravitational wave triggers
Publisher: Oxford University Press (OUP)
Date: 11-03-2016
DOI: 10.1093/MNRAS/STW576
The gamma-ray burst 050904: evidence for a termination shock?
Publisher: EDP Sciences
Date: 02-11-2006
THE ULTRA-LONG GAMMA-RAY BURST 111209A: THE COLLAPSE OF A BLUE SUPERGIANT?
Publisher: American Astronomical Society
Date: 05-03-2013
The puzzling temporally variable optical and X-ray afterglow of GRB 101024A
Publisher: EDP Sciences
Date: 12-05-2011
GRANDMA observations of advanced LIGO’s and advanced Virgo’s third observational campaign
Publisher: Oxford University Press (OUP)
Date: 26-06-2020
Abstract: GRANDMA (Global Rapid Advanced Network Devoted to the Multi-messenger Addicts) is a network of 25 telescopes of different sizes, including both photometric and spectroscopic facilities. The network aims to coordinate follow-up observations of gravitational-wave (GW) candidate alerts, especially those with large localization uncertainties, to reduce the delay between the initial detection and the optical confirmation. In this paper, we detail GRANDMA’s observational performance during Advanced LIGO/Advanced Virgo Observing Run 3 (O3), focusing on the second part of O3 this includes summary statistics pertaining to coverage and possible astrophysical origin of the candidates. To do so, we quantify our observation efficiency in terms of delay between GW candidate trigger time, observations, and the total coverage. Using an optimized and robust coordination system, GRANDMA followed-up about 90 per cent of the GW candidate alerts, that is 49 out of 56 candidates. This led to coverage of over 9000 deg2 during O3. The delay between the GW candidate trigger and the first observation was below 1.5 h for 50 per cent of the alerts. We did not detect any electromagnetic counterparts to the GW candidates during O3, likely due to the very large localization areas (on average thousands of degrees squares) and relatively large distance of the candidates (above 200 Mpc for 60 per cent of binary neutron star, BNS candidates). We derive constraints on potential kilonova properties for two potential BNS coalescences (GW190425 and S200213t), assuming that the events’ locations were imaged.
A multiwavelength study of Swift GRB 060111B constraining the origin of its prompt optical emission
Publisher: EDP Sciences
Date: 02-07-2009
The Zadko Telescope: Exploring the Transient Universe
Publisher: Cambridge University Press (CUP)
Date: 2017
DOI: 10.1017/PASA.2016.61
Abstract: The Zadko telescope is a 1 m f/4 Cassegrain telescope, situated in the state of Western Australia about 80-km north of Perth. The facility plays a niche role in Australian astronomy, as it is the only meter class facility in Australia dedicated to automated follow-up imaging of alerts or triggers received from different external instruments/detectors spanning the entire electromagnetic spectrum. Furthermore, the location of the facility at a longitude not covered by other meter class facilities provides an important resource for time critical projects. This paper reviews the status of the Zadko facility and science projects since it began robotic operations in March 2010. We report on major upgrades to the infrastructure and equipment (2012–2014) that has resulted in significantly improved robotic operations. Second, we review the core science projects, which include automated rapid follow-up of gamma ray burst (GRB) optical afterglows, imaging of neutrino counterpart candidates from the ANTARES neutrino observatory, photometry of rare (Barbarian) asteroids, supernovae searches in nearby galaxies. Finally, we discuss participation in newly commencing international projects, including the optical follow-up of gravitational wave (GW) candidates from the United States and European GW observatory network and present first tests for very low latency follow-up of fast radio bursts. In the context of these projects, we outline plans for a future upgrade that will optimise the facility for alert triggered imaging from the radio, optical, high-energy, neutrino, and GW bands.
Early emission of rising optical afterglows: the case of GRB 060904B and GRB 070420
Publisher: EDP Sciences
Date: 11-03-2008
REVISITING COINCIDENCE RATE BETWEEN GRAVITATIONAL WAVE DETECTION AND SHORT GAMMA-RAY BURST FOR THE ADVANCED AND THIRD GENERATION
Publisher: American Astronomical Society
Date: 15-01-2015
Fast response electromagnetic follow-ups from low latency GW triggers
Publisher: IOP Publishing
Date: 05-2016
Directional limits on persistent gravitational waves using data from Advanced LIGO’s first two observing runs
Publisher: American Physical Society (APS)
Date: 04-09-2019
Using Salivary Cortisol as an Objective Measure of Physiological Stress in People With Dementia and Chronic Pain: A Pilot Feasibility Study
Publisher: SAGE Publications
Date: 18-06-0015
Abstract: Pain can elevate stress in people with dementia. Although salivary cortisol is used as a biomarker of stress in people with dementia, few studies have reported the feasibility of collection methods to assess salivary cortisol in nursing home residents with both dementia and chronic pain. To explore the feasibility of collecting cortisol via salivary swab as an indicator of stress in people with dementia and chronic pain. Participants ( N = 43) aged ≥ 65 years and living with dementia and chronic pain were randomly assigned to the PARO (in idual, nonfacilitated, 30-min sessions with the robotic seal PARO, 5 days per week for 6 weeks) or usual-care group using computer-generated random numbers. Salivary cortisol was collected in the early morning before the intervention (Week 0) and at the completion of the intervention (Week 6) for comparison. There were multiple challenges associated with saliva collection and analysis, including cognitive impairment of participants, ability to obtain repeated s les with saliva volume adequate for assay, and overall cost. Ultimately, adequate saliva was collected from only 8 participants (both pre- and post-intervention) for assay and quantitative analysis. Considering the multiple challenges involved in obtaining valid saliva s les in this population, salivary cortisol may not be a feasible biomarker of physiological stress in people with dementia and chronic pain.
EARLY OPTICAL OBSERVATIONS OF GAMMA-RAY BURSTS BY THE TAROT TELESCOPES: PERIOD 2001-2008
Publisher: American Astronomical Society
Date: 26-03-2009
X‐Ray Afterglow Light Curves: Toward A Standard Candle?
Publisher: American Astronomical Society
Date: 20-08-2008
DOI: 10.1086/589805
Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model
Publisher: American Physical Society (APS)
Date: 04-12-2019
Tests of general relativity with the binary black hole signals from the LIGO-Virgo catalog GWTC-1
Publisher: American Physical Society (APS)
Date: 20-11-2019
Observation of the prompt and early afterglow of GRB 050904 by TAROT
Publisher: AIP
Date: 2006
DOI: 10.1063/1.2207900
The Zadko telescope: A resource for science education enrichment
Publisher: Elsevier BV
Date: 06-2011
Decay properties of the X-ray afterglows of gamma-ray bursts
Publisher: EDP Sciences
Date: 20-01-2005
A Joint Fermi-GBM and LIGO/Virgo Analysis of Compact Binary Mergers from the First and Second Gravitational-wave Observing Runs
Publisher: American Astronomical Society
Date: 20-04-2020
Related Organisations
Related Funding Activities
Linkage Projects - Grant ID: LP0667494
Start Date: 2006
End Date: 03-2012
Amount: $620,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP110102501
Start Date: 2011
End Date: 12-2016
Amount: $545,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE120100051
Start Date: 01-2012
End Date: 12-2014
Amount: $150,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0877550
Start Date: 2008
End Date: 12-2010
Amount: $508,000.00
Funder: Australian Research Council
View Funded Activity