Searching for magnetar powered merger-novae from short GRBs

Abstract

The merger of a double neutron star (NS-NS) binary may result in a rapidly rotating massive NS with an extremely strong magnetic field (i.e., a millisecond magnetar). In this case, the magnetic spin-down of the NS remnant provides an additional source of sustained energy injection, which would continuously power the merger ejecta. The thermal emission from the merger ejecta would give rise to a bright optical "magnetar-powered merger-nova". In this work, we carry out a complete search for magnetar-powered merger-nova from Swift short gamma-ray burst (SGRB) sample. We focus on short GRBs with extended emission or internal plateau, which may signify the presence of magnetars as the central engine. We eventually find three candidates of magnetar-powered merger-nova from the late observations of GRB 050724, GRB 070714B and GRB 061006. With standard parameter values, the magnetar remnant scenario could well interpret the multi-band data of all three bursts, including the extended emission and their late chromatic features in the optical and X-ray data. The peak luminosities of these merger-novae reach several times $10^{42}\mathrm{erg}{\mathrm{s}}^{-1}$, more than one order of magnitude brighter than the traditional "kilo-novae" with peak luminosity of $\sim 10^{41}\mathrm{erg}{\mathrm{s}}^{-1}$. Intense, multi-color late time observations of short GRBs are encouraged to identify more merger-novae in the future.

Match with published version: 2017, ApJ, 873, 50

References in corpus (23)

• GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
• LIGO: The Laser Interferometer Gravitational-Wave Observatory
• The Physics of Gamma-Ray Bursts and Relativistic Jets
• Short Duration Gamma-Ray Bursts with Extended Emission from Proto-Magnetar Spin-Down
• X-Ray Flares from Postmerger Millisecond Pulsars
• Neutrino signatures and the neutrino-driven wind in Binary Neutron Star Mergers
• Kilonova Light Curves from the Disk Wind Outflows of Compact Object Mergers
• A Comprehensive Analysis of the Swift/XRT Data: II. Diverse Physical Origins of the Shallow Decay Segment
• The Millisecond Magnetar Central Engine in short GRBs
• Making a Short Gamma-Ray Burst from a Long one: Implications for the Nature of GRB 060614
• Jet collimation in the ejecta of double neutron star merger: new canonical picture of short gamma-ray bursts
• The X-ray afterglow flat segment in short GRB 051221A: Energy injection from a millisecond magnetar?
• A comprehensive analysis of Swift/XRT data: I. Apparent spectral evolution of GRB X-ray tails
• Jet Breaks in Short Gamma-Ray Bursts. II: The Collimated Afterglow of GRB 051221A
• Phase transitions and He-synthesis driven winds in neutrino cooled accretion disks: prospects for late flares in short gamma-ray bursts
• GRB 080503 late afterglow re-brightening: signature of a magnetar powered merger-nova
• On the GBM event seen 0.4 sec after GW 150914
• The X-ray afterglow of the short gamma ray burst 050724
• The Afterglow and Early-Type Host Galaxy of the Short GRB 150101B at z=0.1343
• X-ray counterpart of gravitational waves due to binary neutron star mergers: light curves, luminosity functions, and event rate densities
• Radio Constraints on Long-Lived Magnetar Remnants in Short Gamma-Ray Bursts
• Multicolor observations of the afterglow of the short/hard GRB 050724
• Rapidly Evolving and Luminous Transients Driven by Newly Born Neutron Stars

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• The Emergence of a Lanthanide-Rich Kilonova Following the Merger of Two Neutron Stars
• Neutrino-dominated accretion flows as the central engine of gamma-ray bursts
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• The peculiar short-duration GRB 200826A and its supernova
• The X-ray fundamental plane of the Platinum Sample, the Kilonovae and the SNe Ib/c associated with GRBs
• A comparison between short GRB afterglows and AT2017gfo: shedding light on kilonovae properties
• Kilonova Emission From Black Hole-Neutron Star Mergers. II. Luminosity Function and Implications for Target-of-opportunity Observations of Gravitational-wave Triggers and Blind Searches
• Kilonova Emission From Black Hole-Neutron Star Mergers. I. Viewing-Angle-Dependent Lightcurves
• GRB 211227A as a peculiar long gamma-ray burst from compact star merger
• GRB 211211A: a Neutron Star$-$White Dwarf Merger?
• Probing Kilonova Ejecta Properties Using a Catalog of Short Gamma-Ray Burst Observations
• Ab-Initio General-Relativistic Neutrino-Radiation Hydrodynamics Simulations of Long-Lived Neutron Star Merger Remnants to Neutrino Cooling Timescales
• Neutron stars and the dense matter equation of state: from microscopic theory to macroscopic observations
• New equation of states for postmerger supramassive quark stars
• DDOTI Observations of Gravitational-Wave Sources Discovered in O3
• Bright "Merger-nova" Emission Powered by Magnetic wind from a New-Born Black Hole
• Outflows from black hole hyperaccretion systems: short and long-short gamma-ray bursts and "quasi-supernovae"
• A Pulsar Wind Nebula Embedded in the Kilonova AT2017gfo Associated with GW 170817/GRB 170817A
• Constraining the long-lived magnetar remnants in short gamma-ray bursts from late-time radio observations
• Evidence for two distinct populations of kilonova-associated Gamma Ray Bursts
• Engine-fed Kilonovae (Mergernovae) -- I. Dynamical Evolution and Energy Injection / Heating Efficiencies
• GRB Observational Properties
• Eighteen Years of Kilonova Discoveries with Swift
• On the Binary-Neutron-Star Post-Merger Magnetar Origin of XRT 210423
• Properties of Gamma-Ray Bursts Associated with Supernovae and Kilonovae
• Kilonova and Optical Afterglow from Binary Neutron Star Mergers. II. Optimal Search Strategy for Serendipitous Observations and Target-of-opportunity Observations of Gravitational-wave Triggers
• Detectability of "Merger-nova" emission from a long-lived magnetar in short gamma-ray bursts
• Evidence for gravitational-wave dominated emission in the central engine of short GRB 200219A
• Possible correlations between gamma-ray burst and its host galaxy offset
• The evolution effects of radius and moment of inertia for rapidly rotating neutron stars
• A Pulsar Wind Nebula Model Applied to Short GRB 050724
• Compact binary merger and kilonova: outflows from remnant disc
• The mass, spin and rotational energy of the remnant black holes from compact binary mergers
• Studying newborn neutron stars by the transient emission after stellar collapses and compact binary mergers
• Shared Properties of Merger-driven Long-duration Gamma-Ray Bursts
• Does a long-lived remnant neutron star exist after short gamma-ray burst GRB 160821B?
• Illuminating the Mass Gap Through Deep Optical Constraint on a Neutron Star Merger Candidate S250206dm
• Kilonova and progenitor properties of merger-driven gamma-ray bursts
• Inverse compton scattered merger-nova: late X-ray counterpart of gravitational wave signals from NS-NS/BH mergers