Raphaël Duqué
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View article: “Extended Emission” from Fallback Accretion onto Merger Remnants
“Extended Emission” from Fallback Accretion onto Merger Remnants Open
Using a set of general-relativistic magnetohydrodynamics simulations that include proper neutrino transfer, we assess for the first time the role played by the fallback accretion onto the remnant from a binary neutron star merger over a ti…
View article: Multi-messenger prospects for black hole – neutron star mergers in the O4 and O5 runs
Multi-messenger prospects for black hole – neutron star mergers in the O4 and O5 runs Open
The existence of merging black hole-neutron star (BHNS) binaries has been ascertained through the observation of their gravitational wave (GW) signals. However, to date, no definitive electromagnetic (EM) emission has been confidently asso…
View article: "Extended emission" from fallback accretion onto merger remnants
"Extended emission" from fallback accretion onto merger remnants Open
Using a set of general-relativistic magnetohydrodynamics simulations that include proper neutrino transfer, we assess for the first time the role played by the fallback accretion onto the remnant from a binary neutron-star merger over a ti…
View article: Impact of anisotropic ejecta on jet dynamics and afterglow emission in binary neutron-star mergers
Impact of anisotropic ejecta on jet dynamics and afterglow emission in binary neutron-star mergers Open
Binary neutron-stars mergers widely accepted as potential progenitors of short gamma-ray bursts. After the remnant of the merger has collapsed to a black hole, a jet is powered and may breakout from the the matter expelled during the colli…
View article: Multi-messenger prospects for black hole - neutron star mergers in the O4 and O5 runs
Multi-messenger prospects for black hole - neutron star mergers in the O4 and O5 runs Open
The existence of merging black hole-neutron star (BHNS) binaries has been ascertained through the observation of their gravitational wave (GW) signals. However, to date, no definitive electromagnetic (EM) emission has been confidently asso…
View article: Flares in gamma-ray burst X-ray afterglows as prompt emission from slightly misaligned structured jets
Flares in gamma-ray burst X-ray afterglows as prompt emission from slightly misaligned structured jets Open
We develop a model to explain the flaring activity in gamma-ray burst X-ray afterglows within the framework of slightly misaligned observers to structured jets. We suggest that flares could be the manifestation of prompt dissipation within…
View article: Coalescences d'objets compacts et sursauts gamma à l'ère des ondes gravitationnelles
Coalescences d'objets compacts et sursauts gamma à l'ère des ondes gravitationnelles Open
The era of multi-messenger astronomy with gravitational waves started with the coalescence of a neutron star binary named GW170817. This signal was followed by a rich set of electromagnetic counterparts: a weak short gamma-ray burst, a kil…
View article: The potential role of binary neutron star merger afterglows in multimessenger cosmology
The potential role of binary neutron star merger afterglows in multimessenger cosmology Open
Binary neutron star mergers offer a new and independent means of measuring the Hubble constant H 0 by combining the gravitational-wave inferred source luminosity distance with its redshift obtained from electromagnetic follow-up. This meth…
View article: Prospects for kilonova signals in the gravitational-wave era
Prospects for kilonova signals in the gravitational-wave era Open
The binary neutron star merger gravitational-wave signal GW170817 was followed by three electromagnetic counterparts, including a kilonova arising from the radioactivity of freshly synthesized r -process elements in ejecta from the merger.…
View article: Probing binary neutron star mergers in dense environments using afterglow counterparts
Probing binary neutron star mergers in dense environments using afterglow counterparts Open
The only binary neutron star merger gravitational wave event with detected electromagnetic counterparts recorded to date is GRB170817A. This merger occurred in a rarefied medium with a density smaller than 10 −3 − 10 −2 cm −3 . Since kicks…
View article: X-ray plateaus in gamma-ray bursts’ light curves from jets viewed slightly off-axis
X-ray plateaus in gamma-ray bursts’ light curves from jets viewed slightly off-axis Open
Using multiple observational arguments, recent work has shown that cosmological gamma-ray bursts (GRBs) are typically viewed at angles within, or close to the cores of their relativistic jets. One of those arguments relied on the lack of t…
View article: Radio afterglows of binary neutron star mergers: a population study for current and future gravitational wave observing runs
Radio afterglows of binary neutron star mergers: a population study for current and future gravitational wave observing runs Open
Following the historical observations of GW170817 and its multi-wavelength afterglow, more radio afterglows from neutron star mergers are expected in the future as counterparts to gravitational wave inspiral signals. Our aim is to describe…
View article: X-ray Plateaus in Gamma Ray Bursts' light-curves from jets viewed slightly off-axis
X-ray Plateaus in Gamma Ray Bursts' light-curves from jets viewed slightly off-axis Open
Using multiple observational arguments, recent work has shown that cosmological GRBs are typically viewed at angles within, or close to the cores of their relativistic jets. One of those arguments relied on the lack of tens-of-days-long pe…