K. Siellez
A5106650982- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Geophysics and Gravity Measurements
- Astrophysical Phenomena and Observations
- SAS software applications and methods
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Geophysics and Sensor Technology
- Statistical and numerical algorithms
- Radio Astronomy Observations and Technology
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- Atomic and Subatomic Physics Research
- Advanced Frequency and Time Standards
- Food Quality and Safety Studies
- Microbial Metabolites in Food Biotechnology
- Probiotics and Fermented Foods
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Astronomy and Astrophysical Research
- GNSS positioning and interference
- Computational Physics and Python Applications
- Stellar, planetary, and galactic studies
- Magnetic confinement fusion research
ARC Centre of Excellence for Gravitational Wave Discovery
2024-2025
University of Tasmania
2024-2025
Centre National de la Recherche Scientifique
2013-2022
Institut d'Astrophysique de Paris
2021-2022
Georgia Institute of Technology
2016-2021
Observatoire de la Côte d’Azur
2013-2021
University of California, Santa Cruz
2019
State Street (United States)
2019
International Center for Relativistic Astrophysics
2017
Université Côte d'Azur
2014-2017
On August 17, 2017 at 12:41:06 UTC the Fermi Gamma-ray Burst Monitor (GBM) detected and triggered on short gamma-ray burst GRB 170817A. Approximately 1.7 s prior to this GRB, Laser Interferometer Gravitational-Wave Observatory (LIGO) a binary compact merger candidate associated with GRB. This is first unambiguous coincident observation of gravitational waves electromagnetic radiation from single astrophysical source marks start gravitational-wave multi-messenger astronomy. We report GBM...
The Wide Field Infrared Survey Telescope (WFIRST) is a 2.4m space telescope with 0.281 deg^2 field of view for near-IR imaging and slitless spectroscopy coronagraph designed > 10^8 starlight suppresion. As background information Astro2020 white papers, this article summarizes the current design anticipated performance WFIRST. While WFIRST does not have UV imaging/spectroscopic capabilities Hubble Space Telescope, wide surveys hundreds times more efficient. Some most ambitious multi-cycle...
The discovery of the electromagnetic counterpart to binary neutron star merger GW170817 has opened era gravitational-wave multi-messenger astronomy. Rapid identification optical/infrared kilonova enabled a precise localization source, which paved way deep multi-wavelength follow-up and its myriad related science results. Fully exploiting this new territory exploration requires acquisition data from samples mergers other gravitational wave sources. After GW170817, frontier is now map...
We present several estimates of the rate simultaneous detection merging a binary system neutron stars in electromagnetic and gravitational wave domains, assuming that they produce short gamma-ray bursts (GRBs). have based our estimations on carefully selected sample GRBs corrected from redshift effects. The results presented this paper are actual observation only. In spectrum, we considered observations by current (Swift Fermi) future (LOFT SVOM) missions. domain, consider detections...
In light of the joint multimessenger detection a binary neutron star merger as gamma-ray burst GRB 170817A and in gravitational waves GW170817, we reanalyze Fermi Gamma-ray Burst Monitor data one closest short bursts: 150101B. We find this is composed hard spike followed by comparatively long soft tail. This apparent two-component nature phenomenologically similar to that 170817A. While was distinct from previously known population bursts terms its prompt intrinsic energetics, 150101B not....
Abstract GRB 220831A is a gamma-ray burst (GRB) with duration and spectral peak energy that places it at the interface between distribution of long-soft short-hard GRBs. In this paper, we present multi-wavelength follow-up campaign to its optical, near-infrared, X-ray radio counterparts. Our deep optical near-infrared observations do not reveal an underlying host galaxy, establish observationally hostless depth, mi ≳ 26.6 AB mag. Based on Amati relation non-detection accompanying supernova,...
We use realistic Monte-Carlo simulations including both gravitational-wave and short gamma-ray burst selection effects to revisit the coincident rate of binary systems composed two neutron stars or a star black hole. show that fraction GW triggers can be observed in coincidence with sGRBs is proportional beaming factor at $z=0$, but increases distance, until it reaches 100 \% detector horizon distance. When this taken into account improved by $~3$ compared simple correction. provide an...
We present the \emph{Fermi} Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) observations of LIGO binary black hole merger (BBH) event GW170104. No candidate electromagnetic counterparts was detected by either GBM or LAT. A detailed analysis LAT data over timescales from seconds to days covering localization region is presented. The resulting flux upper bound (5.2--9.4)$\times$10$^{-7}$ erg cm$^{-2}$ s$^{-1}$ in 10-1000 keV range (0.2--13)$\times$10$^{-9}$ 0.1--1 GeV range. also...
ABSTRACT The relativistic outflows that produce long gamma-ray bursts (LGRBs) can be described by a structured jet model where prompt $\gamma$-ray emission is restricted to narrow region in the jet’s core. Viewing off-axis from core, population of afterglows without an associated GRB detection predicted. In this work, we conduct archival search for these ‘orphan’ (OAs) with minute-cadence, deep ($g\sim 23$) data Dark Energy Camera (DECam) taken as part Deeper, Wider, Faster programme (DWF)....
Short duration Gamma-Ray Bursts are thought to originate from the coalescence of neutron stars in binary systems. They detected as a brief ($<$ 2s), intense flash gamma-ray radiation followed by weaker, rapidly decreasing afterglow. expected be Advanced LIGO and Virgo when their sensitivity will low enough. In recent study we identified population short that intrinsically faint nearby. Here provide evidence favor existence this new can hardly reproduced with model field star coalescences. We...
Short Gamma-Ray Burst (SGRB) progenitors have long been thought to be coalescing binary systems of two Neutron Stars (NSNS) or a Star and Black Hole (NSBH). The August 17$^{\rm th}$, 2017 detection the GW170817 gravitational-wave signal by Advanced LIGO Virgo in coincidence with electromagnetic observation SGRB GRB 170817A confirmed this scenario provided new physical information on nature these astronomical events. We use observations Neil Gehrels Swift Observatory Alert Telescope...
Astrophysical transients have been observed for millennia and shaped our most basic assumptions about the Universe. In last century, systematic searches grown from detecting handfuls of per year to over 7000 in 2018 alone. As these matured, we discovered both large samples "normal" classes new, rare classes. Recently, a transient was first object gravitational waves light. Ground-based observatories, including LSST, will discover thousands optical, but facilities not provide high-fidelity...
The relativistic outflows that produce Long GRBs (LGRBs) can be described by a structured jet model where prompt $\gamma$-ray emission is restricted to narrow region in the jet's core. Viewing off-axis from core, population of afterglows without an associated GRB detection predicted. In this work, we conduct archival search for these `orphan' (OAs) with minute-cadence, deep ($g\sim23$) data Dark Energy Camera (DECam) taken as part Deeper, Wider, Faster programme (DWF). We introduce method...
GRB$\,$220831A is a gamma-ray burst (GRB) with duration and spectral peak energy that places it at the interface between distribution of long-soft short-hard GRBs. In this paper, we present multi-wavelength follow-up campaign to its optical, near-infrared, X-ray radio counterparts. Our deep optical near-infrared observations do not reveal an underlying host galaxy, establish observationally hostless depth, $m_i\gtrsim26.6$ AB mag. Based on Amati relation non-detection accompanying supernova,...
We present an ultraviolet-to-infrared search for the electromagnetic (EM) counterpart to GW190425, second-ever binary neutron star (BNS) merger discovered by LIGO-Virgo-KAGRA Collaboration (LVK). GW190425 was more distant and had a larger localization area than GW170817, therefore we use new tool teglon redistribute probability in context of galaxy catalogs within final volume. derive 90th percentile 6,688 deg$^{2}$, $\sim$1.5$\times$ improvement relative LIGO/Virgo map, show how provides...
The coalescence of two compact objects is a key target for the new gravitational wave observatories such as Advanced-Virgo (AdV), Advanced-LIGO (aLIGO) and KAGRA. This phenomenon can lead to simultaneous detection electromagnetic waves in form short GRBs (sGRBs) transients. will potentially allow first time access fireball central engine properties. We present an estimation rate events, seen both by Swift-like satellite AdV/ALIGO. derived only from observations sGRBs. show that this rate, if...